3I/ATLAS
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 29.19, 12.1, 1' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD; 7' tail in p.a. 108 deg);
    29.08, 11.4, 1.5' (E. Banach, 0.25-m Newtonian);
    29.08, 11.5, 2.3' (M. Meyer, 0.254-m Newtonian);
    28.74, 12.0, 1.8' (T. Yusa, 0.05-m Refractor + CCD; 2.6' tail in p.a. 104 deg);
    28.14, 11.5, 1.8' (A. Kammerer, Teufelsmuehle (Black Forest), Germany, 0.397-m Newtonian);
    28.03, 11.3, 3.2' (C. Harder, nahe Westerholz, 0.3-m Newtonian);
    28.00, 12.2, 1.4' (H. Meyerdierks, Osterholz-Scharmbeck, 0.08-m Refractor + CCD; 1' tail in p.a. 102 deg);
    27.80, 11.7, 2' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD; 1.5' tail in p.a. 105 deg);
    27.79, 11.2, 2' (R. Aikawa, 0.203-m Schmidt-Cassegrain);
    27.68, 11.9, 1.5' (Y. Nagai, 0.05-m Refractor + CCD);
    27.09, 11.3, 3' (M. Meyer, 0.254-m Newtonian);
    27.07, 12.9, -- (A. Pratt, Almalex Observatory, Leeds, 0.279-m Schmidt-Cassegrain + CCD);
    27.05, 13.0, -- (A. Pratt, Almalex Observatory, Leeds, 0.279-m Schmidt-Cassegrain + CCD);
    27.04, 13.4, -- (A. Pratt, Almalex Observatory, Leeds, 0.279-m Schmidt-Cassegrain + CCD);
    27.04, [10.3, 2' (M. Biely, 20x80 Binoculars);
    27.03, 12.0, 1' (A. Scholten, Bussloo, 0.356-m Schmidt-Cassegrain);
    27.02, 12.0, 5.9' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 4.4' tail in p.a. 104 deg);
    26.80, 11.5, 1.7' (O. Miyazaki, 0.32-m Newtonian);
    26.71, 11.7, 2' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD; 2' tail in p.a. 105 deg);
    26.65, 11.9, 1.6' (Y. Nagai, 0.05-m Refractor + CCD);
    26.12, 11.0, 2' (M. Meyer, 0.254-m Newtonian);
    25.28, 11.3, 1' (J. de Souza Aguiar, 0.3-m Newtonian);
    25.18, 11.4, 2.5' (M. Meyer, 0.254-m Newtonian);
    25.15, 11.2, 3' (C. Harder, Jeersdorf f, 0.34-m Newtonian);
    25.10, 10.8, -- (G. van Buitenen, Dordrecht, NL (G06), 0.203-m Ritchey-Chretien + CCD);
    25.01, 11.4, 1.8' (J. Powichrowski, Knyszyn, 0.35-m Newtonian);
    24.75, 11.1, 2.8' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    24.71, 11.6, 2' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD; 2' tail in p.a. 108 deg);
    24.00, 11.1, 3' (C. Harder, Jeersdorf f, 0.34-m Newtonian);
    23.75, 11.3, 2.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD; 1.8' tail in p.a. 102 deg);
    23.71, 11.5, 2.5' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    23.28, 11.2, 1' (J. de Souza Aguiar, 0.3-m Newtonian);
    22.86, 11.4, 3.3' (K. Yoshimoto, 0.3-m Newtonian + CCD; 4' tail in p.a. 105 deg);
    22.80, 11.1, 2' (R. Aikawa, 0.203-m Schmidt-Cassegrain);
    22.77, 11.6, 2.1' (K. Harikae, 0.15-m Newtonian + CCD; 3' tail in p.a. 110 deg);
    22.75, 11.1, 3' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD; 3.2' tail in p.a. 111 deg);
    22.71, 11.6, 2' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD; 1.8' tail in p.a. 113 deg);
    22.63, 11.6, 2' (T. Yusa, 0.05-m Refractor + CCD; 1.5' tail in p.a. 100 deg);
    21.32, 11.6, 2.2' (T. Csorgei, Chopin Observatory (MPC 247), 0.08-m Refractor + CCD; 7.8' tail in p.a. 104 deg);
    21.28, 11.2, 1.5' (J. de Souza Aguiar, 0.3-m Newtonian);
    21.19, 11.6, 2' (T. Karhula, Virsbo, Sweden, 25x100 Binoculars);
    21.08, 11.6, 1.2' (F. Pérez Mate, Bétera, Spain., 0.2-m Newtonian + CCD);
    20.80, 11.5, 2.2' (T. Yusa, 0.05-m Refractor + CCD; 2.6' tail in p.a. 105 deg);
    20.28, 10.9, 2' (J. de Souza Aguiar, 0.3-m Newtonian);
    20.22, 11.1, 2.44' (N. Quinn, 0.28-m Schmidt-Cassegrain + CCD);
    20.08, 13.0, -- (A. Pratt, Almalex Observatory, Leeds, 0.279-m Schmidt-Cassegrain + CCD);
    20.07, 12.9, -- (A. Pratt, Almalex Observatory, Leeds, 0.279-m Schmidt-Cassegrain + CCD);
    20.06, 13.3, -- (A. Pratt, Almalex Observatory, Leeds, 0.279-m Schmidt-Cassegrain + CCD);
    19.98, 11.0, 2' (P. Guzik, 0.326-m Newtonian);
    19.83, 11.3, 2.6' (T. Yusa, 0.05-m Refractor + CCD; 3.2' tail in p.a. 105 deg);
    19.35, 11.1, 3.7' (T. Csorgei, Chopin Observatory (MPC 247), 0.08-m Refractor + CCD; 4.2' tail in p.a. 104 deg);
    19.18, 10.7, 9.7' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.17° tail in p.a. 105 deg);
    19.14, 10.8, 2' (G. Scheerle, 0.235-m Schmidt-Cassegrain);
    19.13, 10.6, 12' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.38° tail in p.a. 105 deg);
    18.96, 11.2, 1.8' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD; 1.5' tail in p.a. 97 deg);
    18.81, 11.2, 2.4' (O. Miyazaki, 0.32-m Newtonian);
    18.18, 10.9, 1.8' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD; 2.7' tail in p.a. 114 deg);
    18.02, 11.1, 2.6' (P. Dekelver, 0.3-m Newtonian + CCD; 4.5' tail in p.a. 105 deg);
    17.81, 11.2, 2.7' (O. Miyazaki, 0.32-m Newtonian);
    17.24, 10.4, 4.2' (D. Heggie, ASERO, Valdin, 0.303-m Newtonian + CCD);
    17.09, 12.9, -- (A. Pratt, Almalex Observatory, Leeds, 0.279-m Schmidt-Cassegrain + CCD);
    17.08, 13.0, -- (A. Pratt, Almalex Observatory, Leeds, 0.279-m Schmidt-Cassegrain + CCD);
    17.07, 13.0, -- (A. Pratt, Almalex Observatory, Leeds, 0.279-m Schmidt-Cassegrain + CCD);
    16.81, 11.4, 1.6' (O. Miyazaki, 0.32-m Newtonian);
    16.76, 10.7, 2' (K. Harikae, 0.15-m Newtonian + CCD; 2' tail in p.a. 112 deg);
    16.23, 10.5, 6.5' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.1° tail in p.a. 105 deg);
    16.15, 10.6, 9.2' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.38° tail in p.a. 105 deg);
    16.13, 10.6, 2' (G. Scheerle, 0.235-m Schmidt-Cassegrain);
    16.12, 10.1, 3' (M. Paradowski, 0.075-m Refractor + CCD; 6.7' tail in p.a. 102 deg);
    16.12, 10.2, 3' (M. Paradowski, 0.075-m Refractor + CCD; 3.7' tail in p.a. 102 deg);
    16.11, 11.0, 1.4' (C. Harder, Jeersdorf f, 0.35-m Newtonian; 4' tail in p.a. 120 deg);
    16.09, 10.8, 5.1' (U. Pilz, Leipzig, 0.035-m Refractor + CCD);
    16.07, 11.2, 1.5' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD; 2.5' tail in p.a. 118 deg);
    16.06, 11.1, 1.3' (M. Kwinta, 0.3-m Newtonian);
    16.02, 11.2, 1.3' (T. Sciezor, Cracow, 0.03-m Camera lens + CCD; 3.3' tail in p.a. 119 deg);
    15.84, 10.7, 3' (R. Aikawa, 0.203-m Schmidt-Cassegrain);
    15.81, 11.2, 1.8' (O. Miyazaki, 0.32-m Newtonian);
    15.62, 13.5, -- (B. Young, 0.4-m Newtonian + CCD);
    15.19, 10.6, 2.7' (A. Kammerer, Teufelsmuehle (Black Forest), Germany, 0.397-m Newtonian);
    15.12, 11.2, 1.5' (C. Harder, Jeersdorf f, 0.531-m Newtonian; 2.5' tail in p.a. 90 deg);
    15.09, 11.1, 4.8' (U. Pilz, Leipzig, 0.035-m Refractor + CCD);
    15.01, 10.9, 2.7' (P. Dekelver, 0.3-m Newtonian + CCD);
    14.26, 10.2, 4' (D. Heggie, ASERO, Valdin, 0.303-m Newtonian + CCD; 1.4' tail in p.a. 100 deg);
    13.19, 12.5, 0.64' (S. Shurpakov, 0.2-m Schmidt-Newtonian + CCD);
    13.06, 11.6, 1' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD);
    11.08, 11.0, 1.7' (H. Meyerdierks, Osterholz-Scharmbeck, 0.05-m Refractor + CCD; 1.3' tail in p.a. 98 deg);
    10.49, 10.6, 5.8' (T. Lehmann, Chopin Obs. (remote), 0.08-m Refractor + CCD; 0.08° tail in p.a. 108 deg);
    10.20, 12.4, -- (A. Pratt, Almalex Observatory, Leeds, 0.279-m Schmidt-Cassegrain + CCD);
    10.20, 12.1, -- (A. Pratt, Almalex Observatory, Leeds, 0.279-m Schmidt-Cassegrain + CCD);
    10.19, 11.9, -- (A. Pratt, Almalex Observatory, Leeds, 0.279-m Schmidt-Cassegrain + CCD);
    09.53, 10.9, 3.5' (M. Olason, Arizona, 0.05-m Refractor + CCD);
    09.06, 10.4, 0.7' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD; 2.8' tail in p.a. 274 deg);
    08.65, &13.6, 0.3' (I. Vazquez, Kalopa, Hawaii, USA, 0.05-m Refractor + CCD; 1.2' tail in p.a. 215 deg);
    08.19, 10.7, 2.7' (H. Meyerdierks, Osterholz-Scharmbeck, 0.05-m Refractor + CCD);
    07.79, 11.0, 2.5' (T. Yusa, 0.05-m Refractor + CCD);
    07.58, , 2.3' (I. Vazquez, Kalopa, Hawaii, USA, 0.05-m Refractor + CCD; 1.2' tail in p.a. 293 deg);
    06.83, 11.0, 2.9' (T. Yusa, 0.05-m Refractor + CCD);
    06.63, , 0.8' (I. Vazquez, Kalopa, Hawaii, USA, 0.05-m Refractor + CCD; 0.5' tail in p.a. 70 deg);
    06.17, 10.9, 3.1' (U. Pilz, Leipzig, 0.035-m Refractor + CCD);
    05.85, 12.1, 2.5' (K. Yoshimoto, 0.3-m Newtonian + CCD);
    05.85, 10.2, 3.8' (K. Yoshimoto, 0.3-m Newtonian + CCD; 3' tail in p.a. 114 deg);
    05.85, 10.7, 3.8' (K. Yoshimoto, 0.3-m Newtonian + CCD; 8' tail in p.a. 297 deg);
    05.62, , 0.2' (I. Vazquez, Kalopa, Hawaii, USA, 0.05-m Refractor + CCD; 0.5" tail);
    05.30, 10.4, 2' (J. de Souza Aguiar, 0.3-m Newtonian);
    05.25, 12.0, -- (A. Pratt, Almalex Observatory, Leeds, 0.279-m Schmidt-Cassegrain + CCD);
    05.24, 12.1, -- (A. Pratt, Almalex Observatory, Leeds, 0.279-m Schmidt-Cassegrain + CCD);
    05.23, 11.9, -- (A. Pratt, Almalex Observatory, Leeds, 0.279-m Schmidt-Cassegrain + CCD);
    04.64, &, 0.2' (I. Vazquez, Kalopa, Hawaii, USA, 0.05-m Refractor + CCD);
    03.74, +, 0.4' (I. Vazquez, Kalopa, Hawaii, USA, 0.05-m Refractor + CCD);
    03.29, 10.4, 2' (J. de Souza Aguiar, 0.3-m Newtonian);
    03.14, 10.0, 4' (V. Gonano, Udine, Italy, 20x80 Binoculars);
    02.64, , 0.4' (I. Vazquez, Kalopa, Hawaii, USA, 0.05-m Refractor + CCD);
    02.46, 10.3, 3.7' (T. Csorgei, Chopin Observatory (MPC 247), 0.08-m Schmidt-Cassegrain + CCD);
    02.31, 10.5, 3.6' (M. Mašek, Malargue, 0.3-m Cassegrain reflector + CCD; 3.5' tail in p.a. 109 deg);
    02.31, 10.2, 5.4' (M. Mašek, Malargue, 0.3-m Cassegrain reflector + CCD; 3.2' tail in p.a. 106 deg);
    02.25, 11.0, -- (A. Pratt, Almalex Observatory, Leeds, 0.279-m Schmidt-Cassegrain + CCD);
    02.24, 11.0, -- (A. Pratt, Almalex Observatory, Leeds, 0.279-m Schmidt-Cassegrain + CCD);
    02.23, 10.1, -- (A. Pratt, Almalex Observatory, Leeds, 0.279-m Schmidt-Cassegrain + CCD);
    02.13, 10.6, 1.8' (G. Scheerle, 0.235-m Schmidt-Cassegrain; 0.06° tail in p.a. 250 deg);
    01.30, 10.3, 2' (J. de Souza Aguiar, 0.3-m Newtonian);
    01.26, 10.2, 4.3' (D. Heggie, ASERO, Valdin, 0.303-m Newtonian + CCD; 3' tail in p.a. 103 deg);
    01.20, 10.2, 2' (J. Warell, Lindby Observstory (K60), Skurup, Sweden, 40x100 Binoculars);
    01.18, 10.0, 3' (A. Scholten, Eerbeek, 0.2-m Newtonian);
    01.15, 10.0, 3' (V. Gonano, Udine, Italy, 20x80 Binoculars);
    01.14, 10.9, 2' (C. Harder, Jeersdorf f, 0.349-m Newtonian);
    01.12, 11.4, 6.3' (T. Csorgei, Skygems Namibia Remote Observatory (MPC L81), 0.106-m Refractor + CCD; 1.5' tail in p.a. 106 deg);
    01.11, 10.1, 3' (H. Meyerdierks, Osterholz-Scharmbeck, 0.08-m Refractor + CCD);
nov 30.76, 10.5, 2.7' (K. Harikae, 0.15-m Newtonian + CCD);
    30.61, , 3.1' (I. Vazquez, Kalopa, Hawaii, USA, 0.05-m Refractor + CCD);
    30.19, 10.4, 0.9' (M. Collins, Everton, 0.254-m Schmidt-Cassegrain);
    30.11, 9.8, 12' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.18° tail in p.a. 107 deg);
    29.84, 10.7, 4.3' (T. Yusa, 0.05-m Refractor + CCD);


24P/Schaumasse
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 29.18, 10.1, 3.5' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD);
    29.10, 9.5, 4' (E. Banach, 0.25-m Newtonian);
    29.09, 9.5, 6' (M. Meyer, 0.254-m Newtonian);
    29.02, 9.6, 4.9' (M. Biely, 20x80 Binoculars);
    28.75, 9.9, 5.7' (T. Yusa, 0.05-m Refractor + CCD);
    28.16, 9.2, 5.5' (A. Kammerer, Teufelsmuehle (Black Forest), Germany, 0.397-m Newtonian);
    28.14, 9.9, 5' (V. Gonano, Udine, Italy, 20x80 Binoculars);
    28.05, 9.8, 6.9' (H. Meyerdierks, Osterholz-Scharmbeck, 0.08-m Refractor + CCD);
    27.83, 9.9, 5' (R. Aikawa, 0.203-m Schmidt-Cassegrain);
    27.69, 10.1, 3' (Y. Nagai, 0.05-m Refractor + CCD);
    27.46, 9.6, 11' (A. Pearce, Skygems Chopin Observatory TX USA, 0.08-m Refractor + CCD);
    27.17, 10.1, 2.8' (J. Konecny, Medlov - Hlivice, 25x100 Binoculars);
    27.14, 9.9, 3.8' (W. Kutschera, 0.25-m Newtonian);
    27.12, 10.1, 3.4' (M. Collins, Everton, 0.254-m Schmidt-Cassegrain);
    27.10, 9.4, 9' (M. Meyer, 0.254-m Newtonian);
    27.05, 10.5, 4' (A. Scholten, Bussloo, 0.356-m Schmidt-Cassegrain);
    27.04, 10.1, 2.9' (M. Biely, 20x80 Binoculars);
    27.03, 11.1, 8' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 2.6' tail in p.a. 290 deg);
    26.81, 10.0, 5' (O. Miyazaki, 0.32-m Newtonian);
    26.77, 9.1, 7' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    26.69, 10.7, 2.4' (Y. Nagai, 0.05-m Refractor + CCD);
    26.52, 10.3, 9' (M. Olason, Arizona, 0.05-m Refractor + CCD);
    26.33, 9.6, 9' (A. Pearce, Skygems Chopin Observatory TX USA, 0.08-m Refractor + CCD);
    26.24, 10.0, 3' (M. Deconinck, Fernelmont, 40x130 Binoculars);
    26.22, 10.0, 5' (G. Pappa, Pedara,Sicily,Italy, 0.3-m Camera lens + CCD);
    26.22, 9.6, 4.2' (W. Kutschera, 0.25-m Newtonian);
    26.20, 10.3, 5.9' (M. Buechner, Tevinca (MPC 247), 0.073-m Refractor + CCD);
    26.20, 10.2, 5.9' (À. Bueno, Tevinca (MPC 247), 0.073-m Refractor + CCD);
    26.13, 9.8, 5.5' (M. Meyer, 0.254-m Newtonian);
    25.27, 10.2, 3.5' (J. de Souza Aguiar, 0.3-m Newtonian);
    25.19, 9.7, 5' (M. Meyer, 0.254-m Newtonian);
    25.16, 9.6, 5' (A. Scholten, Eerbeek, 0.2-m Newtonian);
    25.16, 10.3, 4.6' (C. Harder, Jeersdorf f, 0.34-m Newtonian);
    25.15, 9.6, -- (G. van Buitenen, Dordrecht, NL (G06), 0.203-m Ritchey-Chretien + CCD);
    25.11, 10.8, 4.1' (M. Collins, Everton, 0.254-m Schmidt-Cassegrain);
    25.02, 10.9, 3' (J. Powichrowski, Knyszyn, 0.35-m Newtonian);
    24.77, 9.5, 8' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    24.50, 10.0, 9.5' (A. Pearce, Skygems Chopin Observatory TX USA, 0.08-m Refractor + CCD);
    24.10, 10.4, 4' (C. Harder, Jeersdorf f, 0.34-m Newtonian);
    23.27, 10.3, 3' (J. de Souza Aguiar, 0.3-m Newtonian);
    22.82, 10.6, 2' (R. Aikawa, 0.203-m Schmidt-Cassegrain);
    22.81, 9.9, 6.7' (T. Yusa, 0.05-m Refractor + CCD);
    22.77, 9.9, 7' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    22.77, 10.7, 3.3' (K. Harikae, 0.15-m Newtonian + CCD);
    22.72, 11.2, 3.3' (Y. Nagai, 0.05-m Refractor + CCD);
    22.32, 10.0, 7.5' (A. Pearce, Skygems Chopin Observatory TX USA, 0.08-m Refractor + CCD);
    21.50, 9.8, 14' (T. Lehmann, Chopin Obs. (remote), 0.08-m Refractor + CCD; 0.8' tail in p.a. 293 deg);
    21.37, 9.8, 12' (T. Lehmann, Chopin Obs. (remote), 0.08-m Refractor + CCD; 2.4' tail in p.a. 290 deg);
    21.35, 10.0, 7' (A. Pearce, Skygems Chopin Observatory TX USA, 0.08-m Refractor + CCD);
    21.34, 10.5, 4.8' (T. Csorgei, Chopin Observatory (MPC 247), 0.08-m Refractor + CCD);
    21.27, 10.4, 3' (J. de Souza Aguiar, 0.3-m Newtonian);
    21.18, 9.7, 6' (T. Karhula, Virsbo, Sweden, 25x100 Binoculars);
    21.07, 9.6, 16' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    20.83, 10.9, 3.6' (T. Yusa, 0.05-m Refractor + CCD);
    20.50, 9.9, 13' (T. Lehmann, Chopin Obs. (remote), 0.08-m Refractor + CCD; 1.6' tail in p.a. 293 deg);
    20.37, 9.9, 12' (T. Lehmann, Chopin Obs. (remote), 0.08-m Refractor + CCD; 0.04° tail in p.a. 287 deg);
    20.32, 10.2, 6.5' (A. Pearce, Skygems Chopin Observatory TX USA, 0.08-m Refractor + CCD);
    20.27, 10.5, 3' (J. de Souza Aguiar, 0.3-m Newtonian);
    20.13, 10.5, 3.1' (M. Collins, Everton, 0.254-m Schmidt-Cassegrain);
    19.99, 9.9, 5' (P. Guzik, 25x100 Binoculars);
    19.80, 9.8, 10.2' (T. Yusa, 0.05-m Refractor + CCD);
    19.45, 9.9, 12' (T. Lehmann, Chopin Obs. (remote), 0.08-m Refractor + CCD; 1.1' tail in p.a. 287 deg);
    19.33, 10.4, 6' (A. Pearce, Skygems Chopin Observatory TX USA, 0.08-m Refractor + CCD);
    19.33, 10.6, 5.4' (T. Csorgei, Chopin Observatory (MPC 247), 0.08-m Refractor + CCD);
    19.24, 9.9, 12' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.12° tail in p.a. 292 deg);
    19.15, 9.8, 5' (G. Scheerle, 0.235-m Schmidt-Cassegrain);
    19.11, 9.7, 15' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.33° tail in p.a. 291 deg);
    19.09, 9.7, 16' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.26° tail in p.a. 292 deg);
    19.05, 9.8, 12' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.21° tail in p.a. 289 deg);
    19.01, &11.2, 2.5' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD);
    18.84, 10.0, 9' (K. Yoshimoto, 0.077-m Refractor + CCD);
    18.80, 10.7, 3.4' (O. Miyazaki, 0.32-m Newtonian);
    18.19, 10.7, 4' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD);
    17.79, 11.3, 3.4' (O. Miyazaki, 0.32-m Newtonian);
    17.16, 10.5, 6.4' (U. Pilz, Leipzig, 0.035-m Refractor + CCD);
    16.80, 10.9, 2.5' (O. Miyazaki, 0.32-m Newtonian);
    16.76, 10.8, 1.9' (K. Harikae, 0.15-m Newtonian + CCD);
    16.22, 10.0, 14' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.1° tail in p.a. 292 deg);
    16.12, 10.2, 3.5' (G. Scheerle, 0.235-m Schmidt-Cassegrain);
    16.08, 9.9, 5' (C. Harder, Jeersdorf f, 0.35-m Newtonian);
    16.08, 10.2, 4.5' (M. Paradowski, 0.075-m Refractor + CCD);
    16.08, 9.9, 4.5' (M. Paradowski, 0.075-m Refractor + CCD);
    16.05, 11.1, 2.8' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD);
    16.05, 10.9, 2.3' (M. Kwinta, 0.3-m Newtonian);
    16.04, 10.1, 12' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1.5' tail in p.a. 291 deg);
    16.03, 10.2, 3.7' (T. Sciezor, Cracow, 0.03-m Camera lens + CCD);
    15.98, 10.5, 4' (P. Guzik, 25x100 Binoculars);
    15.82, 10.9, 3' (R. Aikawa, 0.203-m Schmidt-Cassegrain);
    15.80, 11.1, 2.7' (O. Miyazaki, 0.32-m Newtonian);
    15.77, 10.0, 5' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    15.21, 10.6, 4.3' (A. Kammerer, Teufelsmuehle (Black Forest), Germany, 0.397-m Newtonian);
    15.11, 10.3, 4.5' (C. Harder, Jeersdorf f, 0.531-m Newtonian);
    14.78, 10.1, 5' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    14.20, 10.4, 9' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD);
    13.78, 10.4, 5.2' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    13.38, 10.6, 6' (A. Pearce, Skygems Chopin Observatory TX USA, 0.08-m Refractor + CCD);
    13.35, 10.2, 9.7' (T. Lehmann, Chopin Obs. (remote), 0.08-m Refractor + CCD);
    13.34, 10.8, 4.8' (T. Csorgei, Chopin Observatory (MPC 247), 0.08-m Refractor + CCD);
    12.79, 10.3, 5' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    12.69, 11.0, 4.6' (T. Yusa, 0.05-m Refractor + CCD);
    12.48, 10.4, 9' (T. Lehmann, Chopin Obs. (remote), 0.08-m Refractor + CCD; 1.6' tail in p.a. 288 deg);
    12.40, 10.7, 4.8' (T. Csorgei, Chopin Observatory (MPC 247), 0.08-m Refractor + CCD);
    12.35, 10.6, 6' (A. Pearce, Skygems Chopin Observatory TX USA, 0.08-m Refractor + CCD);
    12.13, 10.7, 4.7' (U. Pilz, Leipzig, 0.035-m Refractor + CCD);
    11.78, 10.6, 5.5' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    11.46, 10.5, 7.9' (T. Lehmann, Chopin Obs. (remote), 0.08-m Refractor + CCD);
    11.31, 10.6, 5' (A. Pearce, Skygems Chopin Observatory TX USA, 0.08-m Refractor + CCD);
    10.77, 11.0, 5' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    10.47, 10.6, 7.8' (T. Lehmann, Chopin Obs. (remote), 0.08-m Refractor + CCD);
    07.80, 12.1, 3.4' (T. Yusa, 0.05-m Refractor + CCD);
    06.81, 10.8, 5.6' (T. Yusa, 0.05-m Refractor + CCD);
    06.17, 12.0, 3.1' (U. Pilz, Leipzig, 0.035-m Refractor + CCD);
    05.80, 11.6, 4.6' (K. Yoshimoto, 0.3-m Newtonian + CCD; 6' tail in p.a. 295 deg);
    05.29, 11.2, 2.5' (J. de Souza Aguiar, 0.3-m Newtonian);
    03.28, 11.3, 2' (J. de Souza Aguiar, 0.3-m Newtonian);
    02.11, 12.0, 2' (G. Scheerle, 0.235-m Schmidt-Cassegrain);
    01.28, 11.5, 1.5' (J. de Souza Aguiar, 0.3-m Newtonian);
    01.11, 10.5, 3.5' (C. Harder, Jeersdorf f, 0.349-m Newtonian);
    01.08, 10.6, 11' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD);
nov 30.76, 11.6, 3.3' (K. Harikae, 0.15-m Newtonian + CCD);
    30.06, 10.6, 12' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD);
    29.77, 11.7, 3' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);


29P/Schwassmann-Wachmann
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 28.73, 12.6, 1.5' (T. Yusa, 0.05-m Refractor + CCD);
    27.19, 12.8, 1.2' (W. Kutschera, 0.508-m Newtonian);
    27.05, 12.6, 5.3' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    26.83, 12.7, 0.9' (O. Miyazaki, 0.32-m Newtonian);
    26.17, 11.9, 2.2' (W. Kutschera, 0.25-m Newtonian);
    25.28, 12.8, 1' (J. de Souza Aguiar, 0.3-m Newtonian);
    25.18, 12.8, 1.2' (C. Harder, Jeersdorf f, 0.34-m Newtonian);
    24.79, 12.7, 1.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    24.10, 12.5, 1.4' (C. Harder, Jeersdorf f, 0.34-m Newtonian);
    23.77, 12.8, 1.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    23.28, 12.7, 1' (J. de Souza Aguiar, 0.3-m Newtonian);
    22.79, 12.5, 1.5' (T. Yusa, 0.05-m Refractor + CCD);
    22.77, 12.7, 1.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    21.29, 12.8, 1' (J. de Souza Aguiar, 0.3-m Newtonian);
    21.12, 12.5, 0.8' (T. Karhula, Virsbo, Sweden, 0.305-m Newtonian);
    21.09, 13.3, 2.2' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    20.80, 12.7, 1.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    20.76, 13.0, 0.9' (T. Yusa, 0.05-m Refractor + CCD);
    20.28, 12.7, 1' (J. de Souza Aguiar, 0.3-m Newtonian);
    20.23, 12.3, 1.13' (N. Quinn, 0.28-m Schmidt-Cassegrain + CCD);
    19.81, 12.9, 1.3' (T. Yusa, 0.05-m Refractor + CCD);
    19.79, 12.8, 1.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    19.17, 12.5, 5.6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.25° tail in p.a. 304 deg);
    19.14, 12.7, 2.9' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    18.82, 12.6, 0.8' (O. Miyazaki, 0.32-m Newtonian);
    17.82, 12.2, 1.1' (O. Miyazaki, 0.32-m Newtonian);
    17.60, 13.1, 1.1' (D. Heggie, ASERO, Valdin, 0.303-m Newtonian + CCD);
    16.82, 13.0, 0.7' (O. Miyazaki, 0.32-m Newtonian);
    16.12, 12.9, 1.6' (U. Pilz, Leipzig, 0.035-m Refractor + CCD);
    15.85, 12.9, 0.9' (K. Yoshimoto, 0.3-m Newtonian + CCD);
    15.82, 12.7, 0.7' (O. Miyazaki, 0.32-m Newtonian);
    15.78, 12.8, 1' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    12.88, 13.0, -- (K. Yoshimoto, 0.3-m Newtonian + CCD);
    10.13, 13.1, 2.5' (U. Pilz, Leipzig, 0.035-m Refractor + CCD);
    07.79, 14.2, 0.5' (T. Yusa, 0.05-m Refractor + CCD);
    06.77, 13.9, 0.6' (T. Yusa, 0.05-m Refractor + CCD);
    05.82, 13.9, -- (K. Yoshimoto, 0.3-m Newtonian + CCD);
    02.23, 16.5, 0.45' (R. Hill, Tacande Observatory, La Palma (MPC J22), 0.5-m Newtonian + CCD);
    01.24, 16.6, 0.3' (D. Heggie, ASERO, Valdin, 0.303-m Newtonian + CCD);


43P/Wolf-Harrington
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 22.73, 16.0, 0.45' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    20.75, 16.7, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    19.78, 16.5, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    16.18, 16.5, 1' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.06° tail in p.a. 293 deg);
    15.74, 16.7, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    01.80, 16.8, 0.6' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD; 0.8' tail in p.a. 293 deg);
nov 30.85, 17.2, 0.4' (K. Yoshimoto, 0.3-m Newtonian + CCD; 1.6' tail in p.a. 285 deg);
    30.80, 16.9, 0.6' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD; 0.9' tail in p.a. 289 deg);
    29.80, 16.7, 0.6' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD; 1.2' tail in p.a. 291 deg);


47P/Ashbrook-Jackson
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 19.70, 15.4, 0.3' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD);
    19.42, 15.7, 0.6' (T. Yusa, 0.05-m Refractor + CCD);
    16.51, 15.7, 0.34' (M. Mattiazzo, 0.28-m Schmidt reflector + CCD);
    13.08, 17.2, 0.5' (T. Lehmann, Chopin Obs. (remote), 0.08-m Refractor + CCD; 0.4' tail in p.a. 70 deg);
    06.54, 16.7, 0.6' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    05.93, 17.6, 0.23' (R. Hill, Tacande Observatory, La Palma (MPC J22), 0.5-m Newtonian + CCD);
    03.53, 16.3, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
nov 30.57, 16.3, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);


48P/Johnson
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 26.80, 17.1, 0.8' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 0.5' tail in p.a. 58 deg);
    23.54, 16.2, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    22.54, 16.5, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    21.54, 16.6, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    18.91, 16.1, 1.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.1° tail in p.a. 256 deg);
    18.07, 17.8, 0.29' (P. Dekelver, 0.3-m Newtonian + CCD);
    17.62, 16.1, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    14.98, 17.2, 0.41' (P. Dekelver, 0.3-m Newtonian + CCD);
    13.16, 16.2, 1.1' (T. Lehmann, Chopin Obs. (remote), 0.08-m Refractor + CCD; 0.05° tail in p.a. 262 deg);
    12.65, 16.2, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    11.06, 16.6, 0.35' (P. Dekelver, 0.3-m Newtonian + CCD);
    09.71, 17.3, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    08.89, 17.7, 0.23' (R. Hill, Tacande Observatory, La Palma (MPC J22), 0.5-m Newtonian + CCD);
    07.56, 16.7, 0.6' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD; 1.1' tail in p.a. 65 deg);
    06.56, 16.7, 0.6' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD; 0.6' tail in p.a. 69 deg);
    01.53, 16.0, 0.8' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD; 0.7' tail in p.a. 57 deg);
    01.11, 16.9, 0.18' (P. Dekelver, 0.3-m Newtonian + CCD);
nov 30.53, 16.0, 0.8' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);


78P/Gehrels
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 18.71, 16.6, 0.8' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    16.48, 16.1, 0.6' (M. Mattiazzo, 0.28-m Schmidt reflector + CCD);


123P/West-Hartley
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 26.83, 19.3, 0.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    19.00, 18.2, 0.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    15.95, 18.6, 0.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    15.05, 18.2, 0.29' (P. Dekelver, 0.3-m Newtonian + CCD);
    11.10, 17.8, 0.23' (P. Dekelver, 0.3-m Newtonian + CCD);
    10.94, 18.6, 0.23' (R. Hill, Tacande Observatory, La Palma (MPC J22), 0.5-m Newtonian + CCD);


124P/Mrkos
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 13.92, 19.7, 0.2' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD);
    11.98, 19.8, 0.3' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);


145P/Shoemaker-Levy
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 14.85, 17.6, 0.23' (P. Dekelver, 0.3-m Newtonian + CCD);
    08.83, 17.0, 0.35' (J. Solaz, Escaldarium Observatory,Caldes de Montbui (MPC D28), 0.35-m Schmidt-Cassegrain + CCD);
    07.58, 16.7, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    05.91, 17.5, 0.23' (R. Hill, Tacande Observatory, La Palma (MPC J22), 0.5-m Newtonian + CCD);
nov 30.55, 16.2, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);


164P/Christensen
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 14.21, 17.4, 0.35' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD);


210P/Christensen
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 28.86, 13.3, 1' (T. Yusa, 0.05-m Refractor + CCD; 0.7' tail in p.a. 287 deg);
    25.29, 11.9, 1' (J. de Souza Aguiar, 0.3-m Newtonian);
    25.22, 11.6, -- (G. van Buitenen, Dordrecht, NL (G06), 0.203-m Ritchey-Chretien + CCD);
    25.20, 11.5, 1.2' (C. Harder, Jeersdorf f, 0.34-m Newtonian);
    23.30, 11.8, 1' (J. de Souza Aguiar, 0.3-m Newtonian);
    22.85, 12.6, 1.8' (K. Harikae, 0.15-m Newtonian + CCD);
    21.30, 11.8, 1' (J. de Souza Aguiar, 0.3-m Newtonian);
    20.82, 12.8, 1.1' (T. Yusa, 0.05-m Refractor + CCD; 2.1' tail in p.a. 299 deg);
    20.30, 11.7, 1' (J. de Souza Aguiar, 0.3-m Newtonian);
    19.87, 13.2, 1.1' (T. Yusa, 0.05-m Refractor + CCD; 1.1' tail in p.a. 300 deg);
    18.84, 11.6, 1.3' (O. Miyazaki, 0.32-m Newtonian);
    17.84, 11.8, 0.9' (O. Miyazaki, 0.32-m Newtonian);
    16.85, 11.7, 1.4' (K. Harikae, 0.15-m Newtonian + CCD);
    16.24, 12.1, 2.2' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    15.84, 11.5, 1.4' (O. Miyazaki, 0.32-m Newtonian);
    12.17, 12.0, 1.9' (U. Pilz, Leipzig, 0.035-m Refractor + CCD);
    09.53, 11.1, 2.4' (M. Olason, Arizona, 0.05-m Refractor + CCD; 5' tail in p.a. 301 deg);
    02.53, 10.8, 2.4' (M. Olason, Arizona, 0.05-m Refractor + CCD; 8' tail in p.a. 293 deg);
nov 30.87, 11.1, 2.1' (K. Yoshimoto, 0.3-m Newtonian + CCD; 12' tail in p.a. 295 deg);
    30.84, 10.8, 1.8' (K. Harikae, 0.15-m Newtonian + CCD);
    30.19, 10.5, 2.7' (T. Lehmann, Martinsberg, 0.045-m Camera lens + CCD; 0.24° tail in p.a. 289 deg);


217P/LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 03.17, 18.2, 0.23' (R. Hill, Tacande Observatory, La Palma (MPC J22), 0.5-m Newtonian + CCD);


218P/LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 22.87, 19.1, 0.3' (K. Yoshimoto, 0.3-m Newtonian + CCD);


233P/La Sagra
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 15.10, 19.8, 0.12' (P. Dekelver, 0.3-m Newtonian + CCD);


235P/LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 26.53, 13.8, 1' (M. Olason, Arizona, 0.05-m Refractor + CCD; 2.5' tail in p.a. 283 deg);
    20.29, 13.2, 1' (J. de Souza Aguiar, 0.3-m Newtonian);
    19.16, 12.3, 1.4' (U. Pilz, Leipzig, 0.035-m Refractor + CCD);
    09.55, 14.0, 0.7' (M. Olason, Arizona, 0.05-m Refractor + CCD; 2' tail in p.a. 283 deg);
    02.55, 13.9, 0.7' (M. Olason, Arizona, 0.05-m Refractor + CCD; 4' tail in p.a. 289 deg);


240P-B/NEAT
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 28.59, 15.3, 0.6' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    28.43, 14.8, 0.8' (T. Yusa, 0.05-m Refractor + CCD);
    27.78, 16.3, 0.8' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 0.6' tail in p.a. 82 deg);
    27.74, 15.6, 0.6' (H. Meyerdierks, Osterholz-Scharmbeck, 0.08-m Refractor + CCD; 0.8' tail in p.a. 93 deg);
    26.98, 16.7, 0.9' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    26.75, 14.8, 1.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 0.4' tail in p.a. 82 deg);
    26.74, 15.9, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 0.4' tail in p.a. 80 deg);
    26.74, 16.9, 0.9' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    26.74, 16.0, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 0.5' tail in p.a. 77 deg);
    26.58, 14.9, 0.8' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    26.54, 15.1, 0.8' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    23.58, 15.1, 0.9' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    23.55, 15.3, 0.7' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    22.58, 15.0, 0.9' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    22.56, 15.0, 0.8' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    22.52, 14.9, 0.9' (T. Yusa, 0.05-m Refractor + CCD);
    21.87, 13.6, 0.5' (W. Kutschera, 0.508-m Newtonian);
    21.05, 13.8, 0.43' (T. Csorgei, Chopin Observatory (MPC 247), 0.08-m Refractor + CCD; 0.3' tail in p.a. 64 deg);
    21.04, 14.8, 1' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    20.62, 15.0, 0.8' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    19.96, 14.0, 0.6' (P. Guzik, 0.326-m Newtonian);
    19.75, 14.5, 0.5' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD);
    19.64, 15.0, 0.8' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    19.45, 15.1, 0.6' (T. Yusa, 0.05-m Refractor + CCD);
    18.93, 14.3, 1.2' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    18.89, 14.1, 0.5' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD);
    18.84, 14.5, 1.2' (U. Pilz, Leipzig, 0.035-m Refractor + CCD);
    18.57, 14.8, 0.8' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    18.52, 15.2, 0.6' (T. Yusa, 0.05-m Refractor + CCD);
    18.11, 14.4, 0.33' (T. Csorgei, Chopin Observatory (MPC 247), 0.08-m Refractor + CCD; 0.3' tail in p.a. 83 deg);
    17.95, 14.8, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD);
    17.61, 14.8, 0.9' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    16.58, 14.6, 0.9' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD; 2.3' tail in p.a. 230 deg);
    16.53, 13.9, 0.38' (M. Mattiazzo, 0.28-m Schmidt reflector + CCD);
    16.51, 15.5, 0.6' (T. Yusa, 0.05-m Refractor + CCD);
    15.88, 14.3, 0.6' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD);
    15.79, 13.6, 1.7' (U. Pilz, Leipzig, 0.035-m Refractor + CCD);
    15.72, 15.6, 0.29' (P. Dekelver, 0.3-m Newtonian + CCD);
    15.57, 14.6, 0.8' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    15.56, 14.3, 0.8' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    15.46, 15.0, 0.5' (K. Yoshimoto, 0.3-m Newtonian + CCD);
    15.08, 13.3, 0.8' (T. Csorgei, Chopin Observatory (MPC 247), 0.08-m Refractor + CCD);
    14.80, 14.5, 0.5' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD);
    14.72, 14.6, 0.9' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    14.72, 15.3, 0.41' (P. Dekelver, 0.3-m Newtonian + CCD);
    13.90, 13.6, 1.69' (N. Quinn, 0.28-m Schmidt-Cassegrain + CCD);
    13.90, 14.1, 1.2' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD);
    13.86, 14.4, 0.9' (H. Meyerdierks, Osterholz-Scharmbeck, 0.08-m Refractor + CCD);
    13.72, 15.4, 0.29' (P. Dekelver, 0.3-m Newtonian + CCD);
    13.61, 14.9, 0.8' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    13.06, 13.7, 0.5' (T. Csorgei, Chopin Observatory (MPC 247), 0.08-m Refractor + CCD);
    12.72, 14.5, 0.9' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    12.64, 14.7, 0.9' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    11.99, 13.7, 0.5' (W. Kutschera, 0.508-m Newtonian);
    11.95, 14.9, 0.6' (H. Meyerdierks, Osterholz-Scharmbeck, 0.08-m Refractor + CCD);
    11.86, 14.2, 1' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    11.79, 14.4, 0.47' (P. Dekelver, 0.3-m Newtonian + CCD);
    11.72, 14.3, 0.9' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    11.57, 14.6, 0.9' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    11.02, 13.9, 1.1' (H. Meyerdierks, Osterholz-Scharmbeck, 0.05-m Refractor + CCD);
    10.94, 14.3, 0.47' (P. Dekelver, 0.3-m Newtonian + CCD);
    10.86, 13.8, 0.7' (P. Guzik, 0.326-m Newtonian);
    10.82, 13.2, 0.5' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD);
    10.79, 13.5, 1.05' (M. Paradowski, 0.075-m Refractor + CCD);
    10.79, 13.6, 1.05' (M. Paradowski, 0.075-m Refractor + CCD);
    10.72, 14.4, 0.8' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    10.59, 14.5, 0.8' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    10.52, 15.0, 0.4' (T. Yusa, 0.05-m Refractor + CCD);
    10.33, 13.2, 0.8' (T. Csorgei, Chopin Observatory (MPC 247), 0.08-m Refractor + CCD);
    09.84, 14.6, 0.35' (P. Dekelver, 0.3-m Newtonian + CCD);
    08.91, 13.7, 1.2' (R. Hill, Tacande Observatory, La Palma (MPC J22), 0.5-m Newtonian + CCD);
    08.90, 13.6, 0.3' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD);
    07.55, 14.3, 0.8' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    06.88, 13.4, 1.6' (U. Pilz, Leipzig, 0.035-m Refractor + CCD);
    06.58, 14.5, 0.8' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    06.56, 15.0, 0.5' (T. Yusa, 0.05-m Refractor + CCD);
    05.56, 14.4, 0.8' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    01.95, 14.6, 0.7' (A. Haji, Al-Fulaij Observatory, Oman (MPC C97), 0.61-m "for observations with the largest telescopes" + CCD; 0.5' tail in p.a. 312 deg);
    01.92, 13.4, 1.7' (U. Pilz, Leipzig, 0.035-m Refractor + CCD);
    01.54, 14.5, 0.8' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
nov 30.97, 14.5, 0.35' (P. Dekelver, 0.3-m Newtonian + CCD);
    30.84, 14.7, 0.6' (H. Meyerdierks, Osterholz-Scharmbeck, 0.08-m Refractor + CCD);
    30.83, 14.9, 0.1' (D. Heggie, ASERO, Valdin, 0.303-m Newtonian + CCD);
    30.61, 14.3, 0.8' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    29.96, 14.1, 0.94' (N. Quinn, 0.28-m Schmidt-Cassegrain + CCD);


240P/NEAT
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 28.59, 12.5, 2' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    28.52, 12.8, 2' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    28.43, 13.8, 1' (T. Yusa, 0.05-m Refractor + CCD);
    27.78, 12.9, 3.2' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 1.4' tail in p.a. 79 deg);
    27.74, 13.0, 1.7' (H. Meyerdierks, Osterholz-Scharmbeck, 0.08-m Refractor + CCD; 1.5' tail in p.a. 87 deg);
    27.62, 12.6, 2' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    26.98, 13.3, 3.2' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    26.87, 13.7, 0.8' (H. Meyerdierks, Osterholz-Scharmbeck, 0.08-m Refractor + CCD; 0.7' tail in p.a. 88 deg);
    26.81, 13.1, 0.8' (M. Lombardo, Zen Observatory, Scandicci (MPC M26), 0.3-m Ritchey-Chretien + CCD);
    26.75, 11.8, 4.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 6.7' tail in p.a. 223 deg);
    26.74, 12.7, 4' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 2.5' tail in p.a. 78 deg);
    26.74, 12.7, 4.3' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    26.74, 12.9, 3.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 5.8' tail in p.a. 223 deg);
    26.58, 12.6, 2' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    26.57, 12.9, 0.7' (O. Miyazaki, 0.32-m Newtonian);
    26.54, 12.5, 2' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    25.02, 12.6, -- (G. van Buitenen, Dordrecht, NL (G06), 0.203-m Ritchey-Chretien + CCD);
    24.75, 13.2, 1' (C. Harder, Jeersdorf f, 0.34-m Newtonian);
    24.58, 12.6, 2' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    23.58, 12.6, 2.2' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD; 6.9' tail in p.a. 226 deg);
    23.55, 12.5, 2' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    22.58, 12.6, 2.2' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD; 4.7' tail in p.a. 226 deg);
    22.56, 12.4, 2' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    22.52, 13.0, 1.6' (T. Yusa, 0.05-m Refractor + CCD);
    22.04, 12.7, 1' (J. de Souza Aguiar, 0.27-m Newtonian);
    21.89, 11.9, 1.5' (W. Kutschera, 0.508-m Newtonian);
    21.56, 12.6, 2' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    21.14, 14.4, 1.2' (S. Aguirre, Real del Molinito, Son., 0.05-m Refractor + CCD);
    21.05, 12.1, 1.4' (T. Csorgei, Chopin Observatory (MPC 247), 0.08-m Refractor + CCD; 1' tail in p.a. 69 deg);
    21.04, 11.7, 9' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.2° tail in p.a. 225 deg);
    20.62, 12.4, 2' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    20.01, 12.6, 1' (J. de Souza Aguiar, 0.27-m Newtonian);
    19.96, 12.5, 1.5' (P. Guzik, 0.326-m Newtonian);
    19.75, 12.5, 1.3' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD);
    19.64, 12.4, 2' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    19.45, 13.2, 1' (T. Yusa, 0.05-m Refractor + CCD; 5.4' tail in p.a. 226 deg);
    18.93, 11.8, 5.5' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.24° tail in p.a. 226 deg);
    18.89, 12.6, 2' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD; 2.3' tail in p.a. 234 deg);
    18.84, 12.7, 1.7' (U. Pilz, Leipzig, 0.035-m Refractor + CCD);
    18.57, 12.5, 2' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    18.52, 12.6, 1.7' (T. Yusa, 0.05-m Refractor + CCD; 2.5' tail in p.a. 230 deg);
    18.11, 12.3, 2.7' (T. Csorgei, Chopin Observatory (MPC 247), 0.08-m Refractor + CCD; 1' tail in p.a. 74 deg);
    17.95, 12.4, 1.7' (P. Dekelver, 0.3-m Newtonian + CCD);
    17.61, 12.5, 2' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    16.58, 12.4, 2' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD; 2.3' tail in p.a. 230 deg);
    16.53, 12.4, 1.8' (M. Mattiazzo, 0.28-m Schmidt reflector + CCD);
    16.51, 12.3, 2.6' (T. Yusa, 0.05-m Refractor + CCD; 4.9' tail in p.a. 232 deg);
    16.41, 12.3, 1.9' (Y. Yamaguchi, 0.13-m Hyperboloid astro-camera + CCD);
    16.41, 12.1, 1' (O. Miyazaki, 0.32-m Newtonian);
    15.99, 12.5, 1' (J. de Souza Aguiar, 0.27-m Newtonian);
    15.94, 12.8, 1.4' (W. Kutschera, 0.508-m Newtonian);
    15.88, 12.7, 0.8' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD; 1.5' tail in p.a. 245 deg);
    15.79, 12.6, 2.1' (U. Pilz, Leipzig, 0.035-m Refractor + CCD);
    15.76, 12.1, 1.5' (C. Harder, nahe Westerholz, 0.531-m Newtonian);
    15.72, 12.2, 1.9' (P. Dekelver, 0.3-m Newtonian + CCD);
    15.57, 12.3, 2' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD; 2.4' tail in p.a. 242 deg);
    15.56, 12.3, 1.8' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD; 2.4' tail in p.a. 224 deg);
    15.46, 12.4, 1.8' (K. Yoshimoto, 0.3-m Newtonian + CCD; 18' tail in p.a. 228 deg);
    15.08, 12.2, 2.7' (T. Csorgei, Chopin Observatory (MPC 247), 0.08-m Refractor + CCD);
    15.07, 12.0, 1' (C. Harder, Jeersdorf f, 0.531-m Newtonian);
    14.87, 11.7, 4.3' (P. Carson, PGC, Fregenal de la Sierra, 0.315-m Cassegrain reflector + CCD);
    14.80, 12.4, 0.8' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD);
    14.78, 12.3, 1.2' (M. Kwinta, 0.3-m Newtonian);
    14.72, 12.5, 2' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD; 2.7' tail in p.a. 236 deg);
    14.72, 12.0, 2.3' (P. Dekelver, 0.3-m Newtonian + CCD);
    13.90, 11.7, 6.5' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD; 26.2' tail in p.a. 227 deg);
    13.90, 12.0, 2.07' (N. Quinn, 0.28-m Schmidt-Cassegrain + CCD);
    13.86, 12.3, 2.2' (H. Meyerdierks, Osterholz-Scharmbeck, 0.08-m Refractor + CCD; 2.9' tail in p.a. 226 deg);
    13.72, 12.4, 1.5' (P. Dekelver, 0.3-m Newtonian + CCD; 10.9' tail in p.a. 229 deg);
    13.61, 12.4, 2' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD; 2.5' tail in p.a. 237 deg);
    13.06, 12.2, 2.7' (T. Csorgei, Chopin Observatory (MPC 247), 0.08-m Refractor + CCD);
    12.72, 12.3, 2' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD; 3.2' tail in p.a. 229 deg);
    12.64, 12.3, 2' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD; 3.1' tail in p.a. 234 deg);
    12.52, 12.9, 1' (O. Miyazaki, 0.32-m Newtonian);
    11.99, 12.5, 1' (J. de Souza Aguiar, 0.27-m Newtonian);
    11.97, 11.9, 1.8' (W. Kutschera, 0.508-m Newtonian; 0.05° tail);
    11.95, 12.4, 1.9' (H. Meyerdierks, Osterholz-Scharmbeck, 0.08-m Refractor + CCD; 3.1' tail in p.a. 229 deg);
    11.86, 11.2, 9.9' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.33° tail in p.a. 230 deg);
    11.79, 11.8, 1.6' (P. Dekelver, 0.3-m Newtonian + CCD; 14' tail in p.a. 234 deg);
    11.72, 12.0, 2.2' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD; 3.7' tail in p.a. 233 deg);
    11.57, 12.4, 1.5' (O. Miyazaki, 0.32-m Newtonian);
    11.57, 12.4, 2' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD; 2.3' tail in p.a. 242 deg);
    11.35, 11.6, 5.3' (T. Lehmann, Chopin Obs. (remote), 0.08-m Refractor + CCD; 0.54° tail in p.a. 231 deg);
    11.02, 11.9, 2.7' (H. Meyerdierks, Osterholz-Scharmbeck, 0.05-m Refractor + CCD; 3.2' tail in p.a. 236 deg);
    10.94, 11.7, 1.7' (P. Dekelver, 0.3-m Newtonian + CCD; 13.2' tail in p.a. 230 deg);
    10.86, 12.3, 1.5' (P. Guzik, 0.326-m Newtonian);
    10.82, 11.6, 2' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD; 2' tail in p.a. 240 deg);
    10.79, 11.7, 2.2' (M. Paradowski, 0.075-m Refractor + CCD; 3' tail in p.a. 237 deg);
    10.79, 12.3, 2.2' (M. Paradowski, 0.075-m Refractor + CCD; 2.3' tail in p.a. 237 deg);
    10.72, 12.3, 2' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD; 2.8' tail in p.a. 229 deg);
    10.59, 12.2, 2' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD; 1.7' tail in p.a. 236 deg);
    10.52, 12.7, 0.9' (T. Yusa, 0.05-m Refractor + CCD);
    10.42, 11.6, 1' (O. Miyazaki, 0.32-m Newtonian);
    10.33, 12.3, 2.2' (T. Csorgei, Chopin Observatory (MPC 247), 0.08-m Refractor + CCD);
    09.84, 11.3, 2.6' (P. Dekelver, 0.3-m Newtonian + CCD; 12.7' tail in p.a. 232 deg);
    09.42, 12.7, 1.1' (O. Miyazaki, 0.32-m Newtonian);
    09.08, 14.3, 1.2' (S. Aguirre, Real del Molinito, Son., 0.05-m Refractor + CCD);
    08.91, 12.6, 2.7' (R. Hill, Tacande Observatory, La Palma (MPC J22), 0.5-m Newtonian + CCD);
    08.90, 12.4, 0.5' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD; 2' tail in p.a. 243 deg);
    07.55, 12.3, 2' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD; 1.8' tail in p.a. 242 deg);
    06.88, 12.4, 2.5' (U. Pilz, Leipzig, 0.035-m Refractor + CCD);
    06.58, 12.3, 2' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD; 6.3' tail in p.a. 234 deg);
    06.56, 13.0, 1' (T. Yusa, 0.05-m Refractor + CCD; 1.4' tail in p.a. 241 deg);
    05.56, 12.1, 1.7' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD; 6.3' tail in p.a. 237 deg);
    04.91, 12.3, 1.2' (H. Meyerdierks, Osterholz-Scharmbeck, 0.08-m Refractor + CCD);
    01.95, 14.8, 0.39' (A. Haji, Al-Fulaij Observatory, Oman (MPC C97), 0.61-m "for observations with the largest telescopes" + CCD);
    01.92, 12.5, 2' (U. Pilz, Leipzig, 0.035-m Refractor + CCD);
    01.84, 12.3, 3.4' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.1° tail in p.a. 239 deg);
    01.54, 12.1, 2' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD; 3.3' tail in p.a. 240 deg);
nov 30.97, 11.5, 2.1' (P. Dekelver, 0.3-m Newtonian + CCD; 12.6' tail in p.a. 238 deg);
    30.84, 12.4, 1.6' (H. Meyerdierks, Osterholz-Scharmbeck, 0.08-m Refractor + CCD; 10.2' tail in p.a. 240 deg);
    30.83, 12.5, 0.7' (D. Heggie, ASERO, Valdin, 0.303-m Newtonian + CCD; 0.5' tail in p.a. 238 deg);
    30.74, 12.6, 1.3' (K. Harikae, 0.15-m Newtonian + CCD);
    30.61, 12.1, 2.2' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD; 5.7' tail in p.a. 236 deg);
    29.96, 12.1, 1.5' (N. Quinn, 0.28-m Schmidt-Cassegrain + CCD);


302P/Lemmon-PANSTARRS
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 14.90, 17.8, 0.23' (P. Dekelver, 0.3-m Newtonian + CCD);
    07.60, 17.1, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    03.57, 17.0, 0.6' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);


450P/LONEOS
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 15.14, 18.6, 0.29' (P. Dekelver, 0.3-m Newtonian + CCD);


486P/Leonard
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 06.88, 19.5, 0.23' (R. Hill, Tacande Observatory, La Palma (MPC J22), 0.5-m Newtonian + CCD);


493P/LONEOS
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 26.82, 17.5, 0.6' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 0.2' tail in p.a. 224 deg);
    18.97, 16.8, 0.9' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    15.07, 16.9, 0.23' (P. Dekelver, 0.3-m Newtonian + CCD);
    11.13, 16.6, 0.29' (P. Dekelver, 0.3-m Newtonian + CCD);
    01.14, 16.5, 0.29' (P. Dekelver, 0.3-m Newtonian + CCD);


509P/Catalina
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 22.12, 17.7, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.3-m Hyperboloid astro-camera + CCD);
    10.96, 18.6, 0.23' (R. Hill, Tacande Observatory, La Palma (MPC J22), 0.5-m Newtonian + CCD);


513P/Broughton
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 07.89, 20.1, 0.23' (R. Hill, Tacande Observatory, La Palma (MPC J22), 0.5-m Newtonian + CCD);


C/2014 UN271 (Bernardinelli-Bernstein)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 28.62, 14.7, 1' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    27.70, 14.8, 1' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    26.65, 14.7, 1' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    26.64, 14.6, 1' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    24.70, 14.5, 1' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    24.65, 14.8, 1' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    23.66, 14.7, 1' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    23.65, 14.9, 1.2' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    22.67, 14.5, 1' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    22.64, 14.8, 1.2' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    21.66, 14.5, 1' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    20.68, 14.9, 1' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    19.71, 14.8, 1' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    18.65, 14.7, 1' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    17.69, 14.7, 1' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    16.55, 14.9, 1' (M. Mattiazzo, 0.28-m Schmidt reflector + CCD);
    15.66, 14.6, 1' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    13.69, 14.7, 1' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    12.71, 14.7, 1' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    07.65, 15.0, 1.2' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
nov 30.65, 15.0, 1.2' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);


C/2017 K2 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 26.82, 17.3, 0.5' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    19.01, 16.5, 0.8' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.2' tail in p.a. 45 deg);


C/2019 U5 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
nov 30.63, 17.4, 0.6' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);


C/2021 G2 (Atlas)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 26.54, 15.5, 0.5' (M. Olason, Arizona, 0.05-m Refractor + CCD);


C/2022 E2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 26.71, 15.9, 0.8' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 6.5' tail in p.a. 34 deg);
    26.71, 16.6, 0.8' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 3.5' tail in p.a. 33 deg);
    26.70, 16.9, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 5.3' tail in p.a. 34 deg);
    26.69, 16.1, 1.6' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    17.99, 16.3, 0.35' (P. Dekelver, 0.3-m Newtonian + CCD);
    16.69, 15.8, 2.2' (U. Pilz, Leipzig, 0.035-m Refractor + CCD);
    14.81, 15.8, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD);
    11.86, 16.0, 0.29' (P. Dekelver, 0.3-m Newtonian + CCD);
    10.99, 15.4, 0.35' (P. Dekelver, 0.3-m Newtonian + CCD);
    08.82, 16.6, 0.35' (J. Solaz, Escaldarium Observatory,Caldes de Montbui (MPC D28), 0.35-m Schmidt-Cassegrain + CCD);


C/2022 N2 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 28.58, 13.8, 1' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    28.40, 14.2, 1' (T. Yusa, 0.05-m Refractor + CCD);
    27.58, 14.0, 1' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    26.97, 14.4, 2.4' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 3.6' tail in p.a. 256 deg);
    26.75, 14.2, 1.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 3.1' tail in p.a. 248 deg);
    26.75, 14.3, 2.4' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    26.75, 14.4, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 6.7' tail in p.a. 252 deg);
    26.60, 14.1, 1' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    26.18, 13.4, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 5.6' tail in p.a. 250 deg);
    24.85, 14.4, 1.4' (U. Pilz, Leipzig, 0.035-m Refractor + CCD);
    23.55, 14.0, 1' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    21.82, 13.8, 1.2' (W. Kutschera, 0.508-m Newtonian);
    20.61, 14.0, 1' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    19.91, 14.4, 0.56' (N. Quinn, 0.28-m Schmidt-Cassegrain + CCD);
    19.73, 13.9, 0.7' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD);
    19.64, 13.9, 1' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    19.41, 13.7, 0.6' (T. Yusa, 0.05-m Refractor + CCD);
    18.90, 14.0, 0.5' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD);
    18.56, 13.8, 1.2' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    18.43, 14.1, 0.8' (T. Yusa, 0.05-m Refractor + CCD);
    18.09, 14.1, 0.8' (P. Dekelver, 0.3-m Newtonian + CCD);
    17.80, 13.9, 2.5' (U. Pilz, Leipzig, 0.035-m Refractor + CCD);
    17.60, 14.1, 1.2' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    16.77, 15.7, 0.36' (C. Ratinaud, Landehen (MPC Z43), 0.25-m Newtonian + CCD);
    16.65, 14.5, 0.9' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    16.53, 13.0, 0.6' (O. Miyazaki, 0.32-m Newtonian);
    16.52, 14.1, 1.1' (M. Mattiazzo, 0.28-m Schmidt reflector + CCD);
    16.45, 13.9, 1.1' (Y. Yamaguchi, 0.13-m Hyperboloid astro-camera + CCD);
    16.43, 14.5, 0.7' (T. Yusa, 0.05-m Refractor + CCD);
    15.98, 13.4, 1' (J. de Souza Aguiar, 0.27-m Newtonian);
    15.90, 14.1, 1.6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.14° tail in p.a. 255 deg);
    15.89, 14.3, 0.7' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD);
    15.78, 14.3, 0.9' (C. Harder, nahe Westerholz, 0.531-m Newtonian);
    15.56, 13.9, 1' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    15.03, 13.9, 0.9' (P. Dekelver, 0.3-m Newtonian + CCD);
    14.77, 14.0, 0.5' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD);
    13.81, 14.3, 0.56' (N. Quinn, 0.28-m Schmidt-Cassegrain + CCD);
    13.59, 14.2, 1' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    12.63, 13.7, 1' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    12.53, 13.2, 0.6' (O. Miyazaki, 0.32-m Newtonian);
    11.98, 13.1, 1' (J. de Souza Aguiar, 0.27-m Newtonian);
    11.87, 14.0, 1.8' (U. Pilz, Leipzig, 0.035-m Refractor + CCD);
    11.82, 13.8, 2.2' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.13° tail in p.a. 251 deg);
    11.58, 13.3, 0.7' (O. Miyazaki, 0.32-m Newtonian);
    11.56, 13.8, 1' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    11.08, 14.0, 0.8' (P. Dekelver, 0.3-m Newtonian + CCD);
    10.86, 14.5, 1.05' (M. Paradowski, 0.075-m Refractor + CCD);
    10.86, 14.0, 1.05' (M. Paradowski, 0.075-m Refractor + CCD);
    10.58, 13.8, 1' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    10.50, 14.0, 0.9' (T. Yusa, 0.05-m Refractor + CCD);
    09.60, 13.5, 1' (A. Pearce, Nedlands, Perth, 0.35-m Schmidt-Cassegrain + CCD);
    09.53, 13.7, 1' (K. Yoshimoto, 0.3-m Newtonian + CCD; 5' tail in p.a. 256 deg);
    09.43, 13.6, 0.7' (O. Miyazaki, 0.32-m Newtonian);
    08.93, 14.1, 1' (R. Hill, Tacande Observatory, La Palma (MPC J22), 0.5-m Newtonian + CCD);
    07.54, 13.8, 1.2' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    06.48, 13.9, 1.1' (T. Yusa, 0.05-m Refractor + CCD);
    05.55, 13.8, 0.8' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    01.79, 13.9, 2.1' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.04° tail in p.a. 259 deg);
    01.55, 13.7, 1.1' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    01.09, 13.2, 1.3' (P. Dekelver, 0.3-m Newtonian + CCD; 6.5' tail in p.a. 249 deg);
nov 30.60, 13.9, 1' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD; 4.2' tail in p.a. 248 deg);
    29.99, 14.2, 0.56' (N. Quinn, 0.28-m Schmidt-Cassegrain + CCD);
    29.80, 14.4, 0.5' (M. Lombardo, Zen Observatory, Scandicci (MPC M26), 0.3-m Ritchey-Chretien + CCD);


C/2022 QE78 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 27.79, 14.8, 0.7' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    27.00, 15.5, 2.4' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 5.5' tail in p.a. 256 deg);
    26.84, 15.7, 1.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 6.7' tail in p.a. 256 deg);
    26.12, 14.9, 0.8' (W. Kutschera, 0.508-m Newtonian);
    25.04, 14.4, -- (G. van Buitenen, Dordrecht, NL (G06), 0.203-m Ritchey-Chretien + CCD);
    24.73, 15.1, 0.6' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    23.73, 15.0, 0.6' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    22.73, 15.0, 0.6' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    20.74, 14.9, 0.6' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    19.74, 14.8, 0.6' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    19.21, 15.0, 1.1' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.1° tail in p.a. 256 deg);
    17.75, 14.7, 0.7' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    16.11, 15.1, 1' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.11° tail in p.a. 258 deg);
    15.75, 15.3, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    15.25, 15.2, 0.5' (P. Dekelver, 0.3-m Newtonian + CCD);
nov 30.78, 15.3, 0.7' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD; 4.3' tail in p.a. 256 deg);
    29.78, 15.4, 0.6' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD; 2.5' tail in p.a. 259 deg);


C/2022 R6 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 28.64, 16.6, 0.45' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    27.77, 16.7, 0.4' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    26.67, 16.1, 0.45' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    24.63, 16.3, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    21.67, 16.3, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    20.71, 16.0, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    19.76, 16.0, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    18.67, 16.2, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    15.69, 16.3, 0.6' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    15.20, 16.4, 0.41' (P. Dekelver, 0.3-m Newtonian + CCD);
    12.73, 16.3, 0.6' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    02.14, 17.3, 0.23' (R. Hill, Tacande Observatory, La Palma (MPC J22), 0.5-m Newtonian + CCD);
nov 30.68, 16.7, 0.6' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);


C/2023 C2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 26.72, 17.1, 0.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    18.04, 17.1, 0.35' (P. Dekelver, 0.3-m Newtonian + CCD);
    15.83, 16.2, 0.9' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    11.88, 16.7, 0.23' (P. Dekelver, 0.3-m Newtonian + CCD);
    08.92, 17.0, 0.17' (R. Hill, Tacande Observatory, La Palma (MPC J22), 0.5-m Newtonian + CCD);
    08.82, 16.5, 0.24' (J. Solaz, Escaldarium Observatory,Caldes de Montbui (MPC D28), 0.35-m Schmidt-Cassegrain + CCD);


C/2023 H5 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 26.72, 17.5, 0.5' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 2.3' tail in p.a. 299 deg);
    15.74, 17.2, 0.35' (P. Dekelver, 0.3-m Newtonian + CCD);
    14.74, 17.0, 0.47' (P. Dekelver, 0.3-m Newtonian + CCD);
    11.81, 18.4, 0.18' (P. Dekelver, 0.3-m Newtonian + CCD);
    10.96, 16.5, 0.35' (P. Dekelver, 0.3-m Newtonian + CCD);
    09.78, 16.9, 0.29' (P. Dekelver, 0.3-m Newtonian + CCD);
    08.77, 17.3, 0.24' (J. Solaz, Escaldarium Observatory,Caldes de Montbui (MPC D28), 0.35-m Schmidt-Cassegrain + CCD);
    01.02, 16.6, 0.29' (P. Dekelver, 0.3-m Newtonian + CCD);


C/2023 R1 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 10.68, 14.9, 0.28' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD);


C/2023 X2 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 26.83, 18.5, 0.5' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);


C/2024 A1 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 26.81, 17.1, 0.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 0.8' tail in p.a. 212 deg);
    16.07, 16.2, 1.1' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.08° tail in p.a. 200 deg);
    15.95, 15.1, 0.7' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD);
    15.18, 16.6, 0.35' (P. Dekelver, 0.3-m Newtonian + CCD);
    11.21, 17.0, 0.41' (P. Dekelver, 0.3-m Newtonian + CCD);
    02.16, 17.0, 0.34' (R. Hill, Tacande Observatory, La Palma (MPC J22), 0.5-m Newtonian + CCD);
    01.21, 16.4, 0.29' (P. Dekelver, 0.3-m Newtonian + CCD);


C/2024 E1 (Wierzchos)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 10.06, 9.6, 1' (M. Olason, Arizona, 0.05-m Refractor + CCD);
    03.06, 10.7, 1.6' (M. Olason, Arizona, 0.05-m Refractor + CCD);
    02.06, 10.7, 1.6' (M. Olason, Arizona, 0.05-m Refractor + CCD; 1' tail in p.a. 48 deg);


C/2024 L5 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 05.26, 18.3, 0.23' (R. Hill, Tacande Observatory, La Palma (MPC J22), 0.5-m Newtonian + CCD);


C/2024 R4 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 26.71, 17.1, 0.5' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 0.2' tail in p.a. 111 deg);
    18.80, 16.7, 0.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.3' tail in p.a. 114 deg);
    18.77, 16.9, 0.6' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.3' tail in p.a. 100 deg);


C/2024 T5 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 28.61, 15.2, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    27.64, 15.2, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    26.57, 15.2, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    24.65, 15.2, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    23.65, 15.2, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    22.65, 14.9, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    21.63, 15.2, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD; 0.6' tail in p.a. 244 deg);
    20.65, 15.2, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    19.68, 15.1, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    18.64, 14.9, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    17.64, 15.0, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    16.54, 15.1, 0.6' (M. Mattiazzo, 0.28-m Schmidt reflector + CCD);
    15.63, 15.2, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    13.64, 15.2, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    12.67, 15.0, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD; 0.5' tail in p.a. 248 deg);
    11.64, 15.2, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    10.66, 15.1, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    09.66, 15.2, 0.5' (A. Pearce, Nedlands, Perth, 0.35-m Schmidt-Cassegrain + CCD);
    07.62, 15.0, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    05.58, 15.1, 0.6' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD; 0.4' tail in p.a. 262 deg);
    02.94, 15.1, 1.2' (T. Csorgei, Skygems Namibia Remote Observatory (MPC L81), 0.106-m Refractor + CCD);
    01.57, 15.2, 0.6' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD; 0.7' tail in p.a. 260 deg);
nov 30.58, 15.2, 0.6' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD; 0.6' tail in p.a. 258 deg);


C/2025 J1 (Borisov)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 26.77, 17.3, 0.5' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 0.5' tail in p.a. 38 deg);
    19.05, 17.0, 0.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.5' tail in p.a. 46 deg);
    16.00, 16.9, 0.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.8' tail in p.a. 51 deg);
    11.49, 17.0, 0.5' (T. Lehmann, Chopin Obs. (remote), 0.08-m Refractor + CCD);
    02.06, 17.6, 0.23' (R. Hill, Tacande Observatory, La Palma (MPC J22), 0.5-m Newtonian + CCD);


C/2025 K1-C
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 27.76, 17.8, 0.5' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    26.95, 18.4, 0.4' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    26.74, 15.0, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 15.1' tail in p.a. 75 deg);
    26.73, 15.8, 0.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 19.8' tail in p.a. 76 deg);
    26.73, 15.2, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 12.9' tail in p.a. 75 deg);
    26.72, 18.5, 0.4' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    25.83, 15.5, 0.5' (D. Heggie, ASERO, Valdin, 0.303-m Newtonian + CCD; 16' tail in p.a. 77 deg);
    25.00, 15.5, -- (G. van Buitenen, Dordrecht, NL (G06), 0.203-m Ritchey-Chretien + CCD);
    21.83, 15.0, 1.5' (P. Carson, PGC, Fregenal de la Sierra, 0.315-m Cassegrain reflector + CCD);
    21.06, 17.1, 0.7' (T. Csorgei, Chopin Observatory (MPC 247), 0.08-m Refractor + CCD);
    20.74, 17.4, 0.3' (D. Heggie, Forthimage, Edinburgh, 0.25-m Newtonian + CCD; 10' tail in p.a. 81 deg);
    19.72, 16.1, 0.3' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD);
    18.10, 15.9, 0.43' (T. Csorgei, Chopin Observatory (MPC 247), 0.08-m Refractor + CCD);
    15.05, 15.9, 0.7' (T. Csorgei, Chopin Observatory (MPC 247), 0.08-m Refractor + CCD);
    13.05, 14.5, 0.43' (T. Csorgei, Chopin Observatory (MPC 247), 0.08-m Refractor + CCD);
    12.68, 15.3, 0.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    10.91, 13.1, 1' (R. Hill, Tacande Observatory, La Palma (MPC J22), 0.5-m Newtonian + CCD);


C/2025 K1 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 28.45, 15.2, 0.7' (T. Yusa, 0.05-m Refractor + CCD; 10.5' tail in p.a. 80 deg);
    27.76, 16.5, 0.8' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 8.3' tail in p.a. 75 deg);
    27.75, 16.3, 0.4' (M. Mašek, Ondrejov (MPC 557), 0.3-m Newtonian + CCD; 13.8' tail in p.a. 74 deg);
    26.95, 17.1, 0.5' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 7.3' tail in p.a. 74 deg);
    26.74, 16.1, 0.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    26.73, 17.3, 0.5' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    26.73, 17.1, 0.4' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    26.72, 16.5, 0.5' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 6.8' tail in p.a. 78 deg);
    25.00, 16.7, -- (G. van Buitenen, Dordrecht, NL (G06), 0.203-m Ritchey-Chretien + CCD);
    22.45, 15.0, 0.6' (T. Yusa, 0.05-m Refractor + CCD; 10' tail in p.a. 80 deg);
    21.83, 15.0, 1.5' (P. Carson, PGC, Fregenal de la Sierra, 0.315-m Cassegrain reflector + CCD);
    21.06, 15.3, 1.4' (T. Csorgei, Chopin Observatory (MPC 247), 0.08-m Refractor + CCD; 6.6' tail in p.a. 81 deg);
    21.00, 13.4, 2.8' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.42° tail in p.a. 80 deg);
    19.74, 14.7, 0.75' (N. Quinn, 0.28-m Schmidt-Cassegrain + CCD);
    19.72, 14.7, 1' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD; 3.5' tail in p.a. 76 deg);
    19.44, 14.0, 1.3' (T. Yusa, 0.05-m Refractor + CCD; 11.7' tail in p.a. 78 deg);
    18.95, 13.2, 2.7' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1.39° tail in p.a. 82 deg);
    18.89, 12.8, 3.4' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.4° tail in p.a. 83 deg);
    18.87, 11.4, 2.2' (G. Scheerle, 0.235-m Schmidt-Cassegrain);
    18.40, 14.5, 0.8' (T. Yusa, 0.05-m Refractor + CCD; 9.3' tail in p.a. 85 deg);
    18.10, 14.4, 0.8' (T. Csorgei, Chopin Observatory (MPC 247), 0.08-m Refractor + CCD; 8.4' tail in p.a. 84 deg);
    16.73, 13.3, 2' (U. Pilz, Leipzig, 0.035-m Refractor + CCD);
    16.40, 14.5, 1' (T. Yusa, 0.05-m Refractor + CCD; 4' tail in p.a. 86 deg);
    15.88, 12.7, 2.7' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.87° tail in p.a. 88 deg);
    15.84, 12.6, 1.1' (W. Kutschera, 0.508-m Newtonian; 0.08° tail);
    15.81, 12.0, 1.4' (G. Scheerle, 0.235-m Schmidt-Cassegrain);
    15.78, 12.2, 1.5' (M. Paradowski, 0.075-m Refractor + CCD; 20' tail in p.a. 89 deg);
    15.78, 12.4, 1.5' (M. Paradowski, 0.075-m Refractor + CCD; 12' tail in p.a. 89 deg);
    15.75, 14.8, 0.5' (C. Harder, nahe Westerholz, 0.531-m Newtonian; 3' tail in p.a. 70 deg);
    15.44, 14.7, 0.4' (K. Yoshimoto, 0.3-m Newtonian + CCD; 28' tail in p.a. 88 deg);
    15.11, 14.9, 0.4' (C. Harder, Jeersdorf f, 0.531-m Newtonian; 3.5' tail in p.a. 80 deg);
    15.05, 13.3, 3.2' (T. Csorgei, Chopin Observatory (MPC 247), 0.08-m Refractor + CCD; 17.2' tail in p.a. 90 deg);
    14.81, 14.9, 1.1' (P. Carson, PGC, Fregenal de la Sierra, 0.315-m Cassegrain reflector + CCD);
    14.77, 12.1, 1.5' (M. Kwinta, 0.3-m Newtonian);
    14.67, 14.0, 0.8' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD; 7.5' tail in p.a. 87 deg);
    13.94, 13.2, 2.1' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD; 27.6' tail in p.a. 90 deg);
    13.80, 13.6, 0.8' (H. Meyerdierks, Osterholz-Scharmbeck, 0.08-m Refractor + CCD; 4.9' tail in p.a. 92 deg);
    13.13, 13.0, 1.7' (T. Lehmann, Chopin Obs. (remote), 0.08-m Refractor + CCD; 1.35° tail in p.a. 91 deg);
    13.05, 12.4, 2.2' (T. Csorgei, Chopin Observatory (MPC 247), 0.08-m Refractor + CCD; 16.2' tail in p.a. 94 deg);
    12.80, 12.2, 1.2' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD; 20' tail in p.a. 85 deg);
    12.68, 13.5, 2' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 22.7' tail in p.a. 92 deg);
    12.53, 13.9, 0.7' (K. Yoshimoto, 0.3-m Newtonian + CCD; 25' tail in p.a. 94 deg);
    12.07, 12.4, 2.7' (T. Csorgei, Chopin Observatory (MPC 247), 0.08-m Refractor + CCD; 12.8' tail in p.a. 96 deg);
    11.90, 13.7, 0.6' (H. Meyerdierks, Osterholz-Scharmbeck, 0.08-m Refractor + CCD; 9.6' tail in p.a. 95 deg);
    11.81, 11.8, 0.9' (W. Kutschera, 0.25-m Newtonian; 0.11° tail);
    11.78, 12.1, 3' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.4° tail in p.a. 95 deg);
    11.77, 12.4, 2.1' (U. Pilz, Leipzig, 0.035-m Refractor + CCD; 0.41° tail in p.a. 94 deg);
    11.74, 12.0, 1.5' (U. Pilz, 0.32-m Newtonian);
    11.60, 12.6, 1.8' (O. Miyazaki, 0.32-m Newtonian);
    10.91, 15.7, 0.23' (R. Hill, Tacande Observatory, La Palma (MPC J22), 0.5-m Newtonian + CCD);
    10.91, 13.0, 1' (H. Meyerdierks, Osterholz-Scharmbeck, 0.05-m Refractor + CCD; 8.1' tail in p.a. 100 deg);
    10.74, 11.5, 2' (P. Guzik, 0.326-m Newtonian; 5' tail in p.a. 100 deg);
    10.74, 12.0, 1' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD; 16' tail in p.a. 86 deg);
    10.44, 13.8, 1' (T. Yusa, 0.05-m Refractor + CCD; 4.5' tail in p.a. 101 deg);
    10.40, 12.1, 2' (O. Miyazaki, 0.32-m Newtonian);
    10.32, 11.4, 1.1' (T. Csorgei, Chopin Observatory (MPC 247), 0.08-m Refractor + CCD; 6' tail in p.a. 100 deg);
    09.94, 13.4, 0.75' (N. Quinn, 0.28-m Schmidt-Cassegrain + CCD);
    09.92, 11.5, 1.8' (M. Collins, Everton, 0.254-m Schmidt-Cassegrain);
    09.91, 12.2, 2.5' (U. Pilz, Leipzig, 0.035-m Refractor + CCD; 0.2° tail in p.a. 102 deg);
    09.81, 12.0, 0.5' (A. Kammerer, Voelkersbach (Black Forest), Germany, 0.397-m Newtonian; 3' tail in p.a. 105 deg);
    09.76, 12.5, 2' (G. Scheerle, 0.235-m Schmidt-Cassegrain);
    09.46, 13.9, 0.5' (K. Yoshimoto, 0.3-m Newtonian + CCD; 18' tail in p.a. 104 deg);
    09.45, 13.8, 0.6' (T. Yusa, 0.05-m Refractor + CCD; 1.6' tail in p.a. 103 deg);
    09.40, 12.3, 1.8' (O. Miyazaki, 0.32-m Newtonian; 5' tail in p.a. 100 deg);
    09.07, 13.9, 1.6' (S. Aguirre, Real del Molinito, Son., 0.05-m Refractor + CCD);
    08.52, 13.7, 0.5' (K. Yoshimoto, 0.3-m Newtonian + CCD; 18' tail in p.a. 109 deg);
    07.41, 13.5, 0.5' (K. Yoshimoto, 0.3-m Newtonian + CCD; 18' tail in p.a. 112 deg);
    07.39, 11.6, 1' (O. Miyazaki, 0.32-m Newtonian; 5' tail in p.a. 115 deg);
    06.50, 13.8, 0.3' (K. Yoshimoto, 0.3-m Newtonian + CCD; 6' tail in p.a. 121 deg);
    06.35, 13.1, 0.9' (T. Yusa, 0.05-m Refractor + CCD; 3' tail in p.a. 121 deg);
    05.50, 13.6, 0.4' (K. Yoshimoto, 0.3-m Newtonian + CCD; 5' tail in p.a. 124 deg);
    05.50, 12.2, 0.6' (K. Yoshimoto, 0.3-m Newtonian + CCD; 10' tail in p.a. 124 deg);
    05.50, 13.0, 0.6' (K. Yoshimoto, 0.3-m Newtonian + CCD; 7' tail in p.a. 124 deg);
    04.95, 12.5, 1' (H. Meyerdierks, Osterholz-Scharmbeck, 0.08-m Refractor + CCD; 7.8' tail in p.a. 126 deg);
    04.72, 11.8, 0.5' (M. Filipek, Jerzmanowice, 0.25-m Newtonian + CCD);
    04.67, 11.4, 2.5' (U. Pilz, Leipzig, 0.035-m Refractor + CCD);
    03.73, 11.5, 2.1' (U. Pilz, Leipzig, 0.035-m Refractor + CCD; 0.23° tail in p.a. 134 deg);
    03.24, 10.9, 3.2' (T. Csorgei, Chopin Observatory (MPC 247), 0.08-m Refractor + CCD; 25.7' tail in p.a. 138 deg);
    02.77, 12.2, 0.6' (D. Heggie, Forthimage, Edinburgh, 0.25-m Newtonian + CCD; 10' tail in p.a. 148 deg);
    02.15, 10.4, 3' (G. Scheerle, 0.235-m Schmidt-Cassegrain; 0.05° tail in p.a. 140 deg);
    02.06, 10.4, 3.7' (T. Csorgei, Chopin Observatory (MPC 247), 0.08-m Schmidt-Cassegrain + CCD; 7.6' tail in p.a. 154 deg);
    01.80, 10.7, 3.4' (U. Pilz, Leipzig, 0.035-m Refractor + CCD; 0.41° tail in p.a. 156 deg);
    01.75, 10.4, 5.2' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.35° tail in p.a. 157 deg);
    01.23, 11.4, 1.1' (D. Heggie, ASERO, Valdin, 0.303-m Newtonian + CCD; 11' tail in p.a. 168 deg);
    01.21, , -- (G. Scheerle, 9x63.0 Binoculars);
    01.20, 10.8, 1' (A. Scholten, Eerbeek, 0.2-m Newtonian; 2' tail in p.a. 180 deg);
    01.13, 11.5, 0.6' (C. Harder, Jeersdorf f, 0.349-m Newtonian; 6' tail in p.a. 160 deg);
nov 30.94, 12.4, 0.47' (H. Meyerdierks, Osterholz-Scharmbeck, 0.08-m Refractor + CCD; 8.8' tail in p.a. 174 deg);
    30.90, 12.0, 0.7' (R. Hill, Tacande Observatory, La Palma (MPC J22), 0.5-m Newtonian + CCD);
    30.86, 10.3, 2.1' (M. Collins, Everton, 0.254-m Schmidt-Cassegrain);
    30.75, 11.1, 1.8' (K. Harikae, 0.15-m Newtonian + CCD; 9' tail in p.a. 175 deg);
    30.54, 11.0, 0.8' (K. Yoshimoto, 0.3-m Newtonian + CCD; 22' tail in p.a. 180 deg);
    30.54, 11.7, 0.8' (K. Yoshimoto, 0.3-m Newtonian + CCD; 22' tail in p.a. 180 deg);
    30.54, 12.7, 0.4' (K. Yoshimoto, 0.3-m Newtonian + CCD; 10' tail in p.a. 180 deg);
    30.16, 10.5, 1' (M. Collins, Everton, 0.254-m Schmidt-Cassegrain; 7.4' tail in p.a. 191 deg);
    30.02, 12.1, 0.5' (M. Lombardo, Zen Observatory, Scandicci (MPC M26), 0.3-m Ritchey-Chretien + CCD; 4.3' tail in p.a. 191 deg);


C/2025 N1 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 29.04, 11.9, 1.2' (M. Lombardo, Zen Observatory, Scandicci (MPC M26), 0.3-m Ritchey-Chretien + CCD; 6' tail in p.a. 108 deg);
    27.06, 11.9, 1.2' (M. Lombardo, Zen Observatory, Scandicci (MPC M26), 0.3-m Ritchey-Chretien + CCD; 1.9' tail in p.a. 103 deg);
    21.21, 14.6, 0.13' (H. Smith, 0.8-m Newtonian + CCD);
    06.18, 11.6, 0.8' (M. Lombardo, Zen Observatory, Scandicci (MPC M26), 0.3-m Ritchey-Chretien + CCD);
    02.07, 12.2, 0.31' (A. Haji, Al-Fulaij Observatory, Oman (MPC C97), 0.61-m "for observations with the largest telescopes" + CCD);


C/2025 Q3 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 28.56, 15.9, 0.45' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    27.56, 15.8, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    26.81, 16.4, 0.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    26.58, 16.1, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    24.67, 15.9, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    23.60, 15.9, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    22.60, 16.0, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    21.59, 16.2, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    20.59, 15.9, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    20.53, 15.5, 0.3' (T. Yusa, 0.05-m Refractor + CCD);
    19.62, 15.7, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    18.87, 16.0, 1' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    18.61, 16.4, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    17.58, 15.9, 0.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    16.51, 15.0, 0.5' (M. Mattiazzo, 0.28-m Schmidt reflector + CCD);
    15.64, 16.7, 0.45' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    14.95, 16.2, 0.29' (P. Dekelver, 0.3-m Newtonian + CCD);
    12.13, 16.1, 0.7' (T. Lehmann, Chopin Obs. (remote), 0.08-m Refractor + CCD);
    11.90, 15.8, 1.8' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    11.03, 16.0, 0.41' (P. Dekelver, 0.3-m Newtonian + CCD);
    08.88, 16.3, 0.34' (R. Hill, Tacande Observatory, La Palma (MPC J22), 0.5-m Newtonian + CCD);
    08.84, 16.2, 0.38' (J. Solaz, Escaldarium Observatory,Caldes de Montbui (MPC D28), 0.35-m Schmidt-Cassegrain + CCD);


C/2025 R2 (SWAN)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 27.52, 13.3, 2' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    26.70, 13.7, 3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 4.7' tail in p.a. 241 deg);
    26.69, 14.1, 3.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 0.4' tail in p.a. 66 deg);
    26.52, 13.8, 2' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    24.52, 13.5, 2' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    24.50, 12.7, 1.7' (C. Wyatt, 0.25-m Newtonian);
    23.52, 13.8, 2.5' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    22.52, 13.3, 2.5' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    22.50, 13.8, 2.6' (T. Yusa, 0.05-m Refractor + CCD);
    21.85, 13.6, 2.6' (P. Carson, PGC, Fregenal de la Sierra, 0.315-m Cassegrain reflector + CCD);
    20.57, 13.3, 1.5' (A. Pearce, Perth Observatory, Bickley, 0.35-m Schmidt-Cassegrain + CCD);
    19.74, 13.3, 2.3' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD);
    19.40, 13.4, 2.7' (T. Yusa, 0.05-m Refractor + CCD);
    18.98, 12.8, 1' (J. de Souza Aguiar, 0.27-m Newtonian);
    18.86, 12.5, 5' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.13° tail in p.a. 239 deg);
    18.85, 13.0, 1.4' (G. Scheerle, 0.235-m Schmidt-Cassegrain);
    18.84, 12.4, 6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.21° tail in p.a. 240 deg);
    18.67, 13.3, 2' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD);
    18.42, 12.9, 2.4' (T. Yusa, 0.05-m Refractor + CCD);
    16.52, 13.0, 2.5' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    16.50, 13.6, 1.8' (M. Mattiazzo, 0.28-m Schmidt reflector + CCD);
    16.45, 12.9, 2.9' (T. Yusa, 0.05-m Refractor + CCD);
    15.95, 12.5, 1' (J. de Souza Aguiar, 0.27-m Newtonian);
    15.83, 12.6, 1.5' (G. Scheerle, 0.235-m Schmidt-Cassegrain);
    15.82, 12.7, 1.5' (W. Kutschera, 0.508-m Newtonian);
    15.79, 12.2, 6.3' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.25° tail in p.a. 239 deg);
    15.74, 13.5, 1.5' (C. Harder, nahe Westerholz, 0.531-m Newtonian);
    15.52, 13.0, 2.5' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    14.93, 14.8, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD);
    14.86, 12.7, 3.8' (P. Carson, PGC, Fregenal de la Sierra, 0.315-m Cassegrain reflector + CCD);
    14.74, 12.2, 1.3' (M. Kwinta, 0.3-m Newtonian);
    14.69, 14.2, 0.7' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD);
    14.52, 12.9, 2.5' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    13.78, 15.2, 0.56' (N. Quinn, 0.28-m Schmidt-Cassegrain + CCD);
    13.75, 13.1, 2.3' (H. Meyerdierks, Osterholz-Scharmbeck, 0.08-m Refractor + CCD; 0.8' tail in p.a. 236 deg);
    13.52, 12.4, 3' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    12.51, 12.5, 3' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    12.50, 12.9, 1.3' (O. Miyazaki, 0.32-m Newtonian);
    12.06, 12.0, 5.8' (T. Lehmann, Chopin Obs. (remote), 0.08-m Refractor + CCD; 0.36° tail in p.a. 240 deg);
    11.93, 12.1, 1' (J. de Souza Aguiar, 0.27-m Newtonian);
    11.75, 11.8, 8.3' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    11.72, 12.7, 3.3' (U. Pilz, Leipzig, 0.035-m Refractor + CCD);
    11.51, 12.9, 3' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    11.40, 12.0, 1.2' (O. Miyazaki, 0.32-m Newtonian);
    10.76, 12.5, 2.7' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD);
    10.51, 12.8, 3.2' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    10.47, 13.0, 1.5' (T. Yusa, 0.05-m Refractor + CCD);
    10.41, 12.4, 1' (O. Miyazaki, 0.32-m Newtonian);
    10.07, 12.6, 3.5' (M. Olason, Arizona, 0.05-m Refractor + CCD);
    09.73, 12.8, 1.4' (G. Scheerle, 0.235-m Schmidt-Cassegrain);
    09.51, 12.3, 3' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    09.42, 12.5, 2.6' (T. Yusa, 0.05-m Refractor + CCD);
    09.41, 13.7, 1.3' (O. Miyazaki, 0.32-m Newtonian);
    09.05, 13.7, 1.6' (S. Aguirre, Real del Molinito, Son., 0.05-m Refractor + CCD);
    08.86, 13.3, 1.6' (D. Heggie, Forthimage, Edinburgh, 0.25-m Newtonian + CCD; 20" tail in p.a. 72 deg);
    08.51, 11.9, 3' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    07.51, 12.3, 3.5' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    07.41, 12.3, 1.1' (O. Miyazaki, 0.32-m Newtonian);
    06.90, 13.1, 1.7' (R. Hill, Tacande Observatory, La Palma (MPC J22), 0.5-m Newtonian + CCD);
    06.51, 11.9, 3.5' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD; 4.4' tail in p.a. 233 deg);
    06.45, 12.0, 3.5' (T. Yusa, 0.05-m Refractor + CCD);
    05.51, 11.8, 3.2' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    04.86, 12.5, 2.2' (H. Meyerdierks, Osterholz-Scharmbeck, 0.08-m Refractor + CCD; 0.7' tail in p.a. 69 deg);
    04.51, 11.7, 3' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    02.71, 11.4, 5.6' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    01.71, 12.6, 2' (G. Scheerle, 0.235-m Schmidt-Cassegrain);
nov 30.80, 15.3, 0.4' (D. Heggie, ASERO, Valdin, 0.303-m Newtonian + CCD);


C/2025 R3 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 28.69, 14.8, 1.9' (U. Pilz, Leipzig, 0.035-m Refractor + CCD);
    15.75, 15.9, 2.1' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    12.49, 18.1, 0.3' (K. Yoshimoto, 0.3-m Newtonian + CCD);


C/2025 T1 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 28.36, 10.8, 1.8' (T. Yusa, 0.05-m Refractor + CCD);
    27.73, 10.1, 1.9' (A. Kammerer, Voelkersbach, Germany, 0.397-m Newtonian);
    27.69, 10.9, 1.1' (M. Mašek, Ondrejov (MPC 557), 0.3-m Newtonian + CCD);
    26.69, 10.6, 5' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 2.3' tail in p.a. 37 deg);
    26.68, 9.6, 5.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 2.1' tail in p.a. 41 deg);
    26.68, 10.1, 3.3' (H. Meyerdierks, Osterholz-Scharmbeck, 0.08-m Refractor + CCD);
    26.68, 10.9, 4' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 2.6' tail in p.a. 38 deg);
    26.38, 10.8, 1.2' (O. Miyazaki, 0.32-m Newtonian);
    24.73, 10.2, 2.8' (C. Harder, Jeersdorf f, 0.34-m Newtonian);
    24.05, 9.9, 5' (A. Pearce, Skygems Chopin Observatory TX USA, 0.08-m Refractor + CCD);
    23.72, 9.7, 2.6' (C. Harder, Jeersdorf f, 0.34-m Newtonian);
    22.05, 9.8, 4.5' (A. Pearce, Skygems Chopin Observatory TX USA, 0.08-m Refractor + CCD);
    21.81, 10.0, 4.5' (P. Carson, PGC, Fregenal de la Sierra, 0.315-m Cassegrain reflector + CCD);
    21.06, 11.9, 1.6' (S. Aguirre, Real del Molinito, Son., 0.05-m Refractor + CCD);
    20.73, 10.0, 2' (J. Warell, Lindby, 40x100 Binoculars);
    20.05, 9.8, 4.5' (A. Pearce, Skygems Chopin Observatory TX USA, 0.08-m Refractor + CCD);
    19.76, 9.2, 2.3' (M. Collins, Everton, 0.254-m Schmidt-Cassegrain);
    19.68, 10.2, 2' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD);
    19.38, 10.6, 2.6' (T. Yusa, 0.05-m Refractor + CCD);
    18.74, 9.6, 2.5' (A. Kammerer, Voelkersbach (Black Forest), Germany, 0.397-m Newtonian);
    18.73, 9.7, 7.7' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.08° tail in p.a. 35 deg);
    18.72, 9.8, 3' (C. Harder, Jeersdorf f, 0.34-m Newtonian);
    18.68, 10.7, 1.4' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD);
    18.38, 10.2, 3.2' (Y. Yamaguchi, 0.13-m Hyperboloid astro-camera + CCD);
    18.38, 9.8, 1.3' (O. Miyazaki, 0.32-m Newtonian);
    18.38, 10.4, 3.1' (T. Yusa, 0.05-m Refractor + CCD);
    18.07, 9.9, 4.5' (A. Pearce, Skygems Chopin Observatory TX USA, 0.08-m Refractor + CCD);
    16.75, 10.1, 2.7' (D. Swan, Newcastle upon Tyne, UK, 0.051-m Refractor + CCD);
    16.72, 9.7, 2.5' (J. Warell, Lindby, 40x100 Binoculars);
    16.72, 9.8, 2.5' (C. Harder, Jeersdorf f, 0.35-m Newtonian);
    16.38, 9.8, 1.9' (O. Miyazaki, 0.32-m Newtonian);
    15.76, 9.9, 1.8' (W. Kutschera, 0.508-m Newtonian);
    15.72, 9.9, 2' (C. Harder, nahe Westerholz, 0.531-m Newtonian);
    15.71, 9.6, 7.7' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    15.38, 10.2, 1.5' (R. Aikawa, 0.203-m Schmidt-Cassegrain);
    15.38, 10.1, 1.5' (O. Miyazaki, 0.32-m Newtonian);
    15.06, 9.8, 4.3' (T. Csorgei, Chopin Observatory (MPC 247), 0.08-m Refractor + CCD);
    14.83, 10.0, 4.3' (P. Carson, PGC, Fregenal de la Sierra, 0.315-m Cassegrain reflector + CCD);
    14.72, 9.8, 1.5' (M. Kwinta, 0.3-m Newtonian);
    14.67, 10.2, 1.2' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD);
    14.04, 9.6, 4' (A. Pearce, Skygems Chopin Observatory TX USA, 0.08-m Refractor + CCD);
    13.76, 11.4, 0.8' (P. Dekelver, 0.3-m Newtonian + CCD);
    13.75, 9.4, 2' (A. Scholten, Eerbeek, 0.2-m Newtonian);
    13.72, 9.3, 4' (J. Warell, Lindby, 40x100 Binoculars);
    13.70, 9.7, 4.2' (H. Meyerdierks, Osterholz-Scharmbeck, 0.08-m Refractor + CCD; 3.4' tail in p.a. 38 deg);
    12.78, 9.2, 2.6' (A. Kammerer, Kaltenbronn (Black Forest), Germany, 0.397-m Newtonian);
    12.76, 9.4, 2.4' (W. Kutschera, 0.508-m Newtonian);
    12.68, 9.4, 4.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    12.68, 10.9, 3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 1' tail in p.a. 40 deg);
    12.67, 10.5, 4' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    12.67, 9.6, 4.9' (U. Pilz, Leipzig, 0.035-m Refractor + CCD);
    12.39, 10.1, 2.1' (O. Miyazaki, 0.32-m Newtonian);
    12.04, 9.6, 4.5' (A. Pearce, Skygems Chopin Observatory TX USA, 0.08-m Refractor + CCD);
    11.92, 9.9, 1' (J. de Souza Aguiar, 0.27-m Newtonian);
    11.71, 10.2, 2' (U. Pilz, 0.32-m Newtonian);
    11.70, 9.5, 6.9' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    11.38, 9.6, 2.2' (O. Miyazaki, 0.32-m Newtonian);
    11.38, 9.8, 3.6' (T. Yusa, 0.05-m Refractor + CCD);
    11.04, 9.7, 4' (A. Pearce, Skygems Chopin Observatory TX USA, 0.08-m Refractor + CCD);
    10.73, 9.6, 2.5' (P. Guzik, 25x100 Binoculars);
    10.71, 10.8, 1.4' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD);
    10.41, 9.8, 4.2' (T. Yusa, 0.05-m Refractor + CCD);
    10.38, 9.6, 3.1' (O. Miyazaki, 0.32-m Newtonian);
    10.07, 9.5, 4' (M. Olason, Arizona, 0.05-m Refractor + CCD);
    09.75, 9.4, 2' (A. Kammerer, Voelkersbach (Black Forest), Germany, 0.397-m Newtonian);
    09.40, 10.2, 3.8' (T. Yusa, 0.05-m Refractor + CCD);
    09.38, 9.7, 2' (O. Miyazaki, 0.32-m Newtonian);
    09.06, 11.4, 1.2' (S. Aguirre, Real del Molinito, Son., 0.05-m Refractor + CCD);
    08.79, 9.8, 0.8' (J. Solaz, Escaldarium Observatory,Caldes de Montbui (MPC D28), 0.35-m Schmidt-Cassegrain + CCD);
    08.38, 9.6, 2.3' (O. Miyazaki, 0.32-m Newtonian);
    07.76, 10.0, 3' (V. Gonano, Udine, Italy, 20x80 Binoculars);
    07.38, 9.9, 1.3' (Y. Nagai, 0.044-m Camera lens + CCD);
    07.37, 10.0, 2.6' (O. Miyazaki, 0.32-m Newtonian);
    07.07, 8.8, 3' (C. Hergenrother, Tanque Verde, Tucson, Arizona, 30x125.0 Binoculars);
    03.73, 9.1, 4' (D. Vansteelant, Bruges, 0.3-m Newtonian);
    03.70, 9.7, 4.7' (U. Pilz, Leipzig, 0.035-m Refractor + CCD);
    02.76, 9.5, 4' (V. Gonano, Udine, Italy, 20x80 Binoculars);
    02.05, 9.5, 4.4' (A. Pearce, Skygems Chopin Observatory TX USA, 0.08-m Refractor + CCD);
    01.78, 9.4, 4.1' (W. Kutschera, 0.508-m Newtonian);
    01.72, 9.2, 10' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.26° tail in p.a. 39 deg);
nov 30.82, 9.0, 2.8' (M. Collins, Everton, 0.254-m Schmidt-Cassegrain);
    30.74, 9.3, 3.5' (J. Shanklin, 0.2-m Refractor);
    30.71, 9.2, 7.3' (H. Meyerdierks, Osterholz-Scharmbeck, 0.08-m Refractor + CCD; 2.4' tail in p.a. 34 deg);
    30.38, 10.0, 2' (O. Miyazaki, 0.32-m Newtonian);
    29.82, 8.9, 3' (B. Granslo, Hakadal, Norway, 0.08-m Refractor);


C/2025 V1 (Borisov)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 02.08, 14.5, 0.5' (M. Olason, Arizona, 0.05-m Refractor + CCD);


C/2025 W2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 11.84, 18.0, -- (J. Reeves, Howerd Ave Lakeland, FL, 0.058-m Camera lens);


A/2025 S2
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 09.50, 19.3, -- (K. Yoshimoto, 0.3-m Newtonian + CCD);


P/2025 W3 (Kresken)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 22.18, 20.5, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.3-m Hyperboloid astro-camera + CCD);
    19.08, 19.6, 0.4' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.3' tail in p.a. 266 deg);
    18.92, 17.3, 0.3' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD);
    11.94, [20.0, 0.4' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);


P/2025 W4 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec 22.04, 20.4, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.3-m Hyperboloid astro-camera + CCD);