Recent Comet Brightness Estimates

12P/Pons-Brooks
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
jun 20.44, 7.5, 9.6' (A. Pearce, 0.05-m Refractor + CCD; 20.8' tail in p.a. 157 deg);
    19.44, 7.3, 9.6' (A. Pearce, 0.05-m Refractor + CCD; 19.8' tail in p.a. 159 deg);
    18.73, 7.0, 12' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.18° tail in p.a. 169 deg);
    18.43, 7.4, 8.8' (A. Pearce, 0.05-m Refractor + CCD; 23.5' tail in p.a. 157 deg);
    15.92, 7.0, 4' (M. Goiato, 20x100 Binoculars);
    15.73, 6.6, 16' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.14° tail in p.a. 167 deg);
    14.72, 7.4, 4' (G. Pappa, Namibia (remote control), 0.5-m Prime focus of a reflector + CCD; 18' tail);
    14.44, 7.6, 9' (A. Pearce, 0.05-m Refractor + CCD; 22.7' tail in p.a. 156 deg);
    13.72, 7.5, 5' (G. Pappa, Namibia (remote control), 0.106-m Refractor + CCD; 25' tail);
    13.43, 7.4, 8.8' (A. Pearce, 0.05-m Refractor + CCD; 23.9' tail in p.a. 161 deg);
    12.92, 6.5, 5' (M. Goiato, 20x100 Binoculars);
    12.72, 6.3, 19' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.24° tail in p.a. 168 deg);
    12.43, 6.9, 7.7' (A. Pearce, 0.05-m Refractor + CCD; 27' tail in p.a. 154 deg);
    11.35, 6.2, 7.5' (C. Wyatt, 15x70 Binoculars; 39' tail in p.a. 160 deg);
    10.89, 6.3, 4' (J. de Souza Aguiar, 25x100 Binoculars; 0.3° tail);
    10.89, 6.1, 6' (A. Amorim, 10x50 Binoculars);
    09.92, 7.1, 4' (M. Goiato, 20x100 Binoculars; 0.5° tail in p.a. 160 deg);
    09.89, 7.1, 4' (A. Amorim, 0.09-m Refractor);
    09.89, 6.9, 3' (J. de Souza Aguiar, 25x100 Binoculars; 0.3° tail);
    08.89, 6.8, 3' (J. de Souza Aguiar, 25x100 Binoculars; 0.4° tail);
    07.98, 7.2, 7.2' (A. Pearce, 0.25-m Newtonian + CCD; 0.7° tail in p.a. 160 deg);
    07.88, 6.9, 4' (A. Amorim, 0.09-m Refractor);
    07.75, 6.4, 15' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 1.6° tail in p.a. 337 deg);
    07.43, 7.2, 6.4' (A. Pearce, 0.05-m Refractor + CCD; 29.4' tail in p.a. 159 deg);
    06.89, 6.6, 3' (J. de Souza Aguiar, 25x100 Binoculars; 0.4° tail);
    06.88, 6.8, 3' (A. Amorim, 0.09-m Refractor);
    05.89, 6.5, 3' (J. de Souza Aguiar, 25x100 Binoculars; 0.5° tail);
    05.75, 6.0, 21' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 1.9° tail in p.a. 339 deg);
    05.44, 7.1, 6.7' (A. Pearce, 0.05-m Refractor + CCD; 0.6° tail in p.a. 159 deg);
    03.89, 6.5, 2' (J. de Souza Aguiar, 25x100 Binoculars; 0.5° tail);
    03.75, 6.3, 12' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.57° tail in p.a. 341 deg);
    03.34, 6.2, 6' (C. Wyatt, 15x70 Binoculars; 1.2° tail in p.a. 162 deg);
    02.89, 6.4, 2' (J. de Souza Aguiar, 25x100 Binoculars; 0.5° tail in p.a. 150 deg);
    02.36, 6.5, 6' (M. Mattiazzo, Swan Hill, Victoria, 8x40 Binoculars);
    01.92, 6.7, 4' (M. Goiato, 20x100 Binoculars; 1° tail in p.a. 155 deg);
    01.89, 6.4, 3' (J. de Souza Aguiar, 25x100 Binoculars; 0.5° tail in p.a. 150 deg);
may 31.92, 6.5, 5' (W. Souza, 10x50 Binoculars);
    31.91, 6.5, 8' (W. Souza, 20x80 Binoculars);
    31.89, 6.2, 3' (J. de Souza Aguiar, 25x100 Binoculars; 0.5° tail in p.a. 140 deg);
    30.92, 6.5, 5' (W. Souza, 10x50 Binoculars);
    30.91, 6.4, 8' (W. Souza, 20x80 Binoculars);
    30.89, 6.2, 4' (J. de Souza Aguiar, 25x100 Binoculars; 0.6° tail in p.a. 140 deg);
    30.44, 6.9, 8.6' (A. Pearce, 0.05-m Refractor + CCD; 0.5° tail in p.a. 148 deg);
    29.92, 6.2, 5' (W. Souza, 10x50 Binoculars);
    29.91, 6.2, 8' (W. Souza, 20x80 Binoculars);
    29.89, 6.1, 4' (J. de Souza Aguiar, 25x100 Binoculars; 0.6° tail in p.a. 140 deg);
    29.89, 6.4, -- (A. Amorim, 0.05-m "small telescopes and finders" with aperture not exceeding 4 inches);
    29.36, 6.2, 9' (C. Wyatt, 15x70 Binoculars; 46' tail in p.a. 156 deg);
    28.92, 6.1, 5' (M. Goiato, 20x100 Binoculars; 1° tail in p.a. 150 deg);
    28.89, 6.0, 5' (A. Amorim, 10x50 Binoculars);
    28.89, 6.2, -- (A. Amorim, 0.03-m "small telescopes and finders" with aperture not exceeding 4 inches);
    28.34, 6.0, 6.3' (C. Wyatt, 15x70 Binoculars; 1.2° tail in p.a. 143 deg);
    27.75, 5.8, 21' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 1.63° tail in p.a. 346 deg);
    27.36, 6.0, 6' (M. Mattiazzo, Swan Hill, Victoria, 8x40 Binoculars);
    27.34, 5.9, 8' (C. Wyatt, 15x70 Binoculars; 45' tail in p.a. 149 deg);
    26.36, 5.8, 6' (M. Mattiazzo, Swan Hill, Victoria, 8x40 Binoculars);
    26.34, 5.8, 8' (C. Wyatt, 15x70 Binoculars; 1° tail in p.a. 150 deg);
    24.89, 6.0, -- (A. Amorim, 0.05-m "small telescopes and finders" with aperture not exceeding 4 inches);
    24.44, 6.7, 6.7' (A. Pearce, 0.05-m Refractor + CCD; 0.7° tail in p.a. 152 deg);
    23.91, 6.0, 5' (W. Souza, 20x80 Binoculars);
    23.90, 5.9, 3' (J. de Souza Aguiar, 25x100 Binoculars);
    23.35, 5.7, 6.7' (C. Wyatt, 15x70 Binoculars; 37' tail in p.a. 144 deg);
    22.89, 5.8, 3' (J. de Souza Aguiar, 25x100 Binoculars);

13P/Olbers
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
jun 19.86, 6.8, 3' (V. Gonano, Udine, Italy, 20x80 Binoculars; 20' tail in p.a. 57 deg);
    19.48, 6.6, 4.5' (O. Miyazaki, 20x80 Binoculars; 20' tail in p.a. 56 deg);
    19.48, 6.8, 3' (Y. Sugiyama, 0.12-m Refractor);
    17.89, 7.1, 3' (P. Guzik, 25x100 Binoculars; 0.1° tail in p.a. 60 deg);
    17.88, 7.1, 3' (V. Gonano, Udine, Italy, 20x80 Binoculars; 0.1° tail in p.a. 60 deg);
    17.82, 6.9, 4' (G. Pappa, Pedara,Sicily,Italy, 0.3-m Camera lens + CCD);
    15.95, 6.8, 5' (E. van Dijk, 15x80 Binoculars);
    15.88, 7.5, -- (A. Russo, Gibraltar, 15x50 Binoculars);
    13.87, 6.3, 3' (V. Gonano, Udine, Italy, 20x80 Binoculars);
    11.93, 6.7, 14' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.26° tail in p.a. 68 deg);
    10.92, 6.6, 5' (J. Gonzalez Suarez, 10x50 Binoculars);
    10.91, 6.7, 5' (J. Gonzalez Suarez, 15x70 Binoculars);
    10.91, 6.7, 5' (V. Gonano, Udine, Italy, 20x80 Binoculars);
    10.82, 7.1, 4' (G. Pappa, Pedara,Sicily,Italy, 0.3-m Camera lens + CCD);
    09.93, 6.8, 13' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.23° tail in p.a. 66 deg);
    09.90, 8.0, 3' (C. Harder, Kirchheim/ Thüringen Sternwarte, 0.252-m Newtonian);
    08.95, 7.5, 3' (E. van Dijk, 0.254-m Jones-Bird telescope);
    08.93, 7.2, 2' (A. Scholten, Eerbeek, 0.2-m Newtonian);
    08.90, 7.0, 8' (M. Mašek, 0.25-m Schmidt-Cassegrain + CCD; 9.8' tail in p.a. 62 deg);
    08.89, 6.8, 8' (M. Mašek, 0.25-m Schmidt-Cassegrain + CCD; 9.8' tail in p.a. 63 deg);
    08.83, 7.7, 8' (V. Gonano, Udine, Italy, 20x80 Binoculars);
    07.89, 7.3, 2.4' (A. Kammerer, Voelkersbach (Black Forest), Germany, 0.397-m Newtonian);
    07.88, 7.0, 9.6' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD; 0.28° tail in p.a. 63 deg);
    07.83, 7.5, 3' (G. Pappa, Pedara,Sicily,Italy, 12x50 Binoculars);
    07.81, 7.7, 2' (G. Pappa, Pedara,Sicily,Italy, 0.05-m Camera lens + CCD);
    06.88, 7.1, 9.1' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD; 0.14° tail in p.a. 69 deg);
    06.82, 7.7, 2' (G. Pappa, Pedara,Sicily,Italy, 0.05-m Camera lens + CCD);
    06.81, 7.7, 3' (V. Gonano, Udine, Italy, 20x80 Binoculars);
    06.15, 7.7, 3' (C. Hergenrother, Tanque Verde, Arizona, 30x125.0 Binoculars);
    05.93, &7.8, 3' (A. Scholten, Eerbeek, 0.2-m Newtonian);
    05.89, 7.3, 2' (P. Pérez Corujo, Vega de San Mateo Gran Canaria, 25x100 Binoculars);
    05.48, 7.1, -- (T. Lartsev, Yuzhno-Sakhalinsk, Sakhalin, Russia, 0.05-m Camera lens + CCD);
    05.47, 7.8, 2.3' (O. Miyazaki, 0.32-m Newtonian);
    04.89, 8.0, 1' (U. Pilz, 0.32-m Newtonian);
    04.88, 7.6, 3' (C. Labordena, Culla, 11x80 Binoculars);
    04.87, 7.5, 4' (V. Díaz, La Romana, Alicante, Spain, 20x80 Binoculars);
    04.80, 7.6, 4' (V. Gonano, Udine, Italy, 20x80 Binoculars);
    04.48, 7.6, 4' (K. Yoshimoto, 20x100 Binoculars);
    02.89, 7.3, 4' (P. Pérez Corujo, Vega de San Mateo Gran Canaria, 25x100 Binoculars);
    02.82, 7.3, 3' (V. Gonano, Udine, Italy, 20x80 Binoculars);
    01.91, 7.2, 4' (J. Gonzalez Suarez, 15x70 Binoculars);
    01.47, 7.4, 3' (J. Pile, San Rafael, Bulacan, Philippines, 0.05-m Monocular 1x);
may 31.89, 7.4, 4.8' (M. Mašek, 0.25-m Schmidt-Cassegrain + CCD; 5.6' tail in p.a. 62 deg);
    31.89, 7.4, 5.9' (M. Mašek, 0.25-m Schmidt-Cassegrain + CCD; 5.2' tail in p.a. 60 deg);
    31.80, 7.5, 3' (V. Gonano, Udine, Italy, 20x80 Binoculars);
    30.15, 7.7, 2' (C. Hergenrother, Tanque Verde, Arizona, 30x125.0 Binoculars);
    29.91, 7.7, 3' (J. Gonzalez Suarez, 15x70 Binoculars);
    29.90, 8.2, 3' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain);
    29.87, 8.3, 2.5' (E. Banach, 0.25-m Newtonian);
    29.84, 8.3, 3' (V. Gonano, Udine, Italy, 20x80 Binoculars);
    29.46, 8.4, 2' (O. Miyazaki, 0.32-m Newtonian);
    28.89, 7.4, 11' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.21° tail in p.a. 76 deg);
    28.87, 7.6, 8.4' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD; 0.1° tail in p.a. 73 deg);
    27.86, 8.1, 2.7' (M. Paradowski, Dabrowa, Poland, 0.05-m Camera lens + CCD; 5.4' tail in p.a. 74 deg);
    27.15, 7.7, 3' (C. Hergenrother, Tanque Verde, Arizona, 30x125.0 Binoculars);
    25.46, 8.2, 2' (Y. Yamaguchi, 0.076-m Refractor + CCD);

29P/Schwassmann-Wachmann
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
jun 12.89, 16.1, 2.7' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    10.89, 14.8, 1.3' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    03.90, 14.1, 2.9' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    02.90, 14.3, 2.2' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    01.73, 15.1, 1.4' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
may 30.89, 14.2, 2.9' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    26.91, 14.4, 1.7' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    25.92, 13.9, 1.5' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    25.91, 13.7, 0.7' (P. Dekelver, 0.3-m Newtonian + CCD);
    23.89, 15.7, 0.75' (K. Hills, 0.5-m Newtonian + CCD);
    22.90, 14.3, 1.1' (P. Dekelver, 0.3-m Newtonian + CCD);
    22.89, 15.5, 0.94' (K. Hills, 0.5-m Newtonian + CCD);

37P/Forbes
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
jun 12.95, 17.2, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    12.72, 17.0, 0.3' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD; 0.2' tail in p.a. 130 deg);
    10.73, 16.8, 0.3' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
    08.80, 17.5, 0.4' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD; 0.4' tail in p.a. 107 deg);
    06.76, 17.7, 0.4' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD; 0.2' tail in p.a. 120 deg);
    01.94, 17.2, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
may 25.96, 17.0, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    25.91, 17.5, 0.38' (K. Hills, 0.5-m Newtonian + CCD);

48P/Johnson
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
may 29.10, 19.3, 0.38' (K. Hills, 0.5-m Newtonian + CCD);

62P/Tsuchinshan
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
jun 04.80, 14.4, 5.6' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.15° tail in p.a. 300 deg);
may 31.99, 19.4, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    27.91, 14.7, 4.2' (T. Lehmann, Nerpio (remote), 0.25-m Newtonian + CCD; 0.17° tail in p.a. 291 deg);
    25.96, 19.0, 0.38' (K. Hills, 0.5-m Newtonian + CCD);

65P/Gunn
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
jun 12.97, 17.1, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    11.98, 16.7, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    07.92, 16.3, 0.7' (P. Dekelver, 0.3-m Newtonian + CCD);
    07.45, 16.9, 0.5' (A. Pearce, 0.35-m Schmidt-Cassegrain + CCD);
    06.94, 16.2, 1.1' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    05.47, 16.5, 0.6' (A. Pearce, 0.35-m Schmidt-Cassegrain + CCD);
    03.45, 16.5, 0.6' (A. Pearce, 0.35-m Schmidt-Cassegrain + CCD);
    01.95, 17.2, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
may 28.96, 16.7, 1' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD);
    28.03, 16.2, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD);
    25.93, 16.3, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD);
    25.90, 17.5, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    25.77, 16.5, 0.5' (G. Pappa, Namibia (remote control), 0.106-m Refractor + CCD);
    22.93, 16.6, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD);

89P/Russell
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
jun 18.02, 17.0, 0.4' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
    15.02, 17.0, 0.4' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
    11.04, 17.3, 0.3' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
    09.03, 17.4, 0.3' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
    04.13, 17.3, 0.3' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
    03.09, 17.2, 0.3' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
    02.05, 16.5, 0.4' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
may 27.03, 16.5, 0.5' (G. Pappa, Namibia (remote control), 0.306-m Prime focus of a reflector + CCD);

103P/Hartley
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
may 22.90, 19.4, 0.38' (K. Hills, 0.5-m Newtonian + CCD);

125P/Spacewatch
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
jun 17.94, 17.0, 0.3' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
    17.07, 17.2, 0.4' (G. Pappa, Piemonte,Italy (Skygems remote control), 0.3-m Newtonian + CCD);
    16.95, 17.0, 0.4' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
    14.73, 16.8, 0.4' (A. Pearce, 0.35-m Schmidt-Cassegrain + CCD);
    13.95, 17.3, 0.3' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD; 0.4' tail in p.a. 242 deg);
    10.96, 16.6, 0.4' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD; 0.4' tail in p.a. 254 deg);
    09.96, 16.2, 0.3' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
    05.72, 17.1, 0.5' (A. Pearce, 0.35-m Schmidt-Cassegrain + CCD; 0.9' tail in p.a. 256 deg);
may 31.73, 16.8, 0.5' (A. Pearce, 0.35-m Schmidt-Cassegrain + CCD; 0.6' tail in p.a. 251 deg);
    29.77, 17.6, 0.2' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 0.5' tail in p.a. 250 deg);

130P/McNaught-Hughes
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
jun 18.77, 15.2, 0.4' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 2' tail in p.a. 245 deg);
    18.09, 14.8, 0.7' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD; 2.8' tail in p.a. 247 deg);
    17.09, 14.4, 1.1' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD; 2.8' tail in p.a. 245 deg);
    13.09, 15.0, 0.6' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD; 2.7' tail in p.a. 237 deg);
    10.11, 15.2, 0.5' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD; 1.2' tail in p.a. 245 deg);
    09.10, 15.3, 0.5' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD; 0.5' tail in p.a. 243 deg);
    05.88, 14.7, 1.1' (A. Pearce, 0.35-m Schmidt-Cassegrain + CCD; 3' tail in p.a. 249 deg);
may 26.10, 15.0, 1' (G. Pappa, Namibia (remote control), 0.106-m Refractor + CCD);

144P/Kushida
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
jun 03.78, 13.2, 5.8' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD);
    01.92, 15.4, 0.6' (M. Mašek, 0.25-m Schmidt-Cassegrain + CCD);
    01.92, 15.5, 0.9' (M. Mašek, 0.25-m Schmidt-Cassegrain + CCD);
may 27.89, 12.3, 8.3' (T. Lehmann, Nerpio (remote), 0.25-m Newtonian + CCD);
    22.92, 14.7, 1.32' (K. Hills, 0.5-m Newtonian + CCD);

146P/Shoemaker-LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
jun 10.20, 17.0, 0.5' (G. Pappa, Namibia (remote control), 0.36-m Newtonian + CCD);

154P/Brewington
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
jun 18.79, 13.5, 1.3' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD);
    17.21, 14.0, 0.8' (M. Mašek, 0.25-m Schmidt-Cassegrain + CCD);
    17.21, 15.1, 0.4' (M. Mašek, 0.25-m Schmidt-Cassegrain + CCD);
    11.12, 9.7, 3' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain);

227P/Catalina-LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
may 23.90, 17.4, 0.38' (K. Hills, 0.5-m Newtonian + CCD);

299P/Catalina-PANSTARRS
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
jun 14.58, 15.8, 0.5' (A. Pearce, 0.35-m Schmidt-Cassegrain + CCD);
    13.74, 15.8, 0.4' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
    09.77, 15.6, 0.4' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
    07.98, 14.9, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    05.55, 15.6, 0.5' (A. Pearce, 0.35-m Schmidt-Cassegrain + CCD);
    04.78, 15.6, 0.4' (A. Pearce, 0.36-m Ritchey-Chretien + CCD);
    03.59, 15.5, 0.4' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD);
    03.57, 15.4, 0.5' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
    02.08, 16.0, 0.4' (A. Pearce, 0.36-m Ritchey-Chretien + CCD);

328P/LONEOS-Tucker
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
jun 17.11, 18.7, 0.3' (G. Pappa, Namibia (remote control), 0.5-m Prime focus of a reflector + CCD);

362P
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
jun 16.94, 17.5, 0.2' (G. Pappa, Piemonte,Italy (Skygems remote control), 0.3-m Newtonian + CCD);
    07.99, 16.9, 0.9' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD);
    06.95, 16.8, 0.7' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD);
    04.95, 16.9, 0.7' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD);

473P/NEAT
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
may 28.92, 14.9, 3.1' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);

479P/Elenin
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
jun 12.50, 14.3, 2.4' (A. Pearce, 0.35-m Schmidt-Cassegrain + CCD);
    11.90, 12.6, 6.2' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD);
    05.50, 13.8, 3.1' (A. Pearce, 0.35-m Schmidt-Cassegrain + CCD);
may 31.49, 14.5, 1.9' (A. Pearce, 0.35-m Schmidt-Cassegrain + CCD);
    30.81, 12.1, 7.9' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD);

C/2014 UN271 (Bernardinelli-Bernstein)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
jun 19.17, 15.3, 2.1' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD);
    10.19, 16.8, 0.3' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);

C/2019 L3 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
jun 12.75, 16.0, 0.4' (G. Pappa, Namibia (remote control), 0.106-m Refractor + CCD);
    09.72, 15.8, 0.5' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);

C/2019 T4 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
jun 18.02, 15.4, 1.6' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD);
    12.99, 15.6, 0.9' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    12.00, 15.3, 1.1' (P. Dekelver, 0.3-m Newtonian + CCD; 3.4' tail in p.a. 247 deg);
    11.97, 15.2, 1.7' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.22° tail in p.a. 248 deg);
    10.01, 16.5, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    08.97, 16.3, 0.58' (S. Shurpakov, 0.41-m Newtonian + CCD);
    08.45, 15.5, 0.8' (A. Pearce, 0.43-m Schmidt-Cassegrain + CCD);
    07.41, 16.6, 0.5' (A. Pearce, 0.43-m Schmidt-Cassegrain + CCD);
    07.06, 15.2, 1.1' (P. Dekelver, 0.3-m Newtonian + CCD);
    06.06, 16.4, 0.3' (G. Pappa, Piemonte,Italy (remote control), 0.3-m Newtonian + CCD);
    05.03, 15.6, 1.8' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD);
    02.33, 16.2, 0.6' (A. Pearce, 0.43-m Schmidt-Cassegrain + CCD);
may 28.19, 17.5, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    25.92, 16.9, 0.43' (S. Shurpakov, 0.41-m Newtonian + CCD);
    23.03, 15.6, 0.7' (P. Dekelver, 0.3-m Newtonian + CCD);

C/2019 U5 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
jun 07.46, 15.0, 0.5' (A. Pearce, 0.35-m Schmidt-Cassegrain + CCD);
    05.77, 14.9, 1.1' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 2.2' tail in p.a. 90 deg);
may 31.47, 14.7, 0.5' (A. Pearce, 0.35-m Schmidt-Cassegrain + CCD);

C/2020 K1 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
may 30.76, 15.4, 1.5' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.06° tail in p.a. 184 deg);

C/2020 V2 (ZTF)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
jun 18.03, 14.2, 0.6' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
    17.04, 13.9, 1' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD; 4.6' tail in p.a. 18 deg);
    14.15, 13.4, 2.9' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.37° tail in p.a. 21 deg);
    14.04, 13.8, 0.9' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD; 1.9' tail in p.a. 23 deg);
    13.05, 13.8, 1.1' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD; 5' tail in p.a. 15 deg);
    13.02, 13.9, 1.5' (G. Pappa, Namibia (remote control), 0.106-m Refractor + CCD);
    11.05, 13.9, 0.9' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD; 17' tail in p.a. 19 deg);
    10.15, 14.1, 0.7' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
    07.37, 13.6, 1.9' (A. Pearce, 0.25-m Newtonian + CCD; 4.1' tail in p.a. 22 deg);
    05.78, 13.7, 1.5' (A. Pearce, 0.35-m Schmidt-Cassegrain + CCD; 4.9' tail in p.a. 21 deg);
    03.15, 14.5, 0.7' (A. Pearce, 0.36-m Ritchey-Chretien + CCD);
    02.11, 13.9, 1' (A. Pearce, 0.36-m Ritchey-Chretien + CCD; 0.8' tail in p.a. 28 deg);
may 31.82, 13.9, 1.7' (A. Pearce, 0.35-m Schmidt-Cassegrain + CCD; 2.6' tail in p.a. 18 deg);

C/2021 G2 (Atlas)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
jun 20.50, 14.2, 1.1' (A. Pearce, 0.05-m Refractor + CCD);
    15.54, 14.2, 1.3' (A. Pearce, 0.05-m Refractor + CCD);
    14.52, 13.9, 1.3' (A. Pearce, 0.05-m Refractor + CCD);
    13.52, 14.0, 1.3' (A. Pearce, 0.05-m Refractor + CCD);
    13.47, 14.0, 1.3' (A. Pearce, 0.35-m Schmidt-Cassegrain + CCD; 4.4' tail in p.a. 250 deg);
    07.97, 14.0, 1.1' (A. Pearce, 0.25-m Newtonian + CCD; 1.3' tail in p.a. 244 deg);
    07.51, 14.3, 1.1' (A. Pearce, 0.05-m Refractor + CCD);
    06.78, 13.9, 1.7' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.08° tail in p.a. 250 deg);
    05.52, 13.9, 1.6' (A. Pearce, 0.05-m Refractor + CCD);
    05.51, 14.3, 1.5' (A. Pearce, 0.35-m Schmidt-Cassegrain + CCD; 3.8' tail in p.a. 250 deg);
    03.46, 14.1, 1.5' (A. Pearce, 0.35-m Schmidt-Cassegrain + CCD; 3' tail in p.a. 247 deg);
    01.92, 12.7, 1.5' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain);
may 31.46, 13.9, 1.5' (A. Pearce, 0.35-m Schmidt-Cassegrain + CCD; 3.4' tail in p.a. 250 deg);
    29.79, 13.8, 1.7' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.08° tail in p.a. 249 deg);
    29.42, 13.9, 0.7' (C. Wyatt, 0.4-m Newtonian);
    28.41, 13.8, 1' (C. Wyatt, 0.25-m Newtonian);
    26.36, 13.9, 0.6' (C. Wyatt, 0.25-m Newtonian);
    25.94, 14.2, 0.6' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    25.94, 14.1, 0.94' (K. Hills, 0.5-m Newtonian + CCD);

C/2021 S3 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
jun 19.90, 11.8, 3.1' (E. Bryssinck, 0.4-m Newtonian + CCD);
    19.71, 12.3, 0.9' (O. Miyazaki, 0.32-m Newtonian);
    19.41, 13.0, 1.4' (D. Heggie, UDRO, Utah, 0.25-m Hyperboloid astro-camera + CCD; 7' tail in p.a. 243 deg);
    18.72, 12.4, 1.2' (O. Miyazaki, 0.32-m Newtonian);
    17.97, 11.7, 6.4' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD; 0.23° tail in p.a. 265 deg);
    13.96, 11.9, 6.8' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD; 0.33° tail in p.a. 260 deg);
    13.01, 12.2, 3' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    12.02, 12.2, 3.7' (P. Dekelver, 0.3-m Newtonian + CCD; 20' tail in p.a. 265 deg);
    12.01, 12.0, 4.3' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.31° tail in p.a. 261 deg);
    10.03, 12.0, 3.7' (P. Dekelver, 0.3-m Newtonian + CCD; 19.4' tail in p.a. 266 deg);
    09.95, 12.4, 1.4' (C. Harder, Kirchheim/ Thüringen Sternwarte, 0.252-m Newtonian);
    09.19, 12.8, 0.9' (A. Pearce, 0.25-m Newtonian + CCD);
    09.05, 12.2, 3.7' (P. Dekelver, 0.3-m Newtonian + CCD; 22.6' tail in p.a. 266 deg);
    08.94, 13.7, 0.53' (S. Shurpakov, 0.41-m Newtonian + CCD; 1.19' tail in p.a. 222 deg);
    08.38, 13.0, 0.8' (A. Pearce, 0.25-m Newtonian + CCD; 2.1' tail in p.a. 236 deg);
    08.05, 11.9, 4.5' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD);
    08.01, 11.8, 3.7' (P. Dekelver, 0.3-m Newtonian + CCD; 22.4' tail in p.a. 268 deg);
    07.33, 12.8, 1.1' (A. Pearce, 0.25-m Newtonian + CCD; 2.4' tail in p.a. 247 deg);
    07.01, 11.8, 5' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD; 0.25° tail in p.a. 266 deg);
    06.97, 11.7, 4.8' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.49° tail in p.a. 264 deg);
    06.71, 13.1, -- (P. Yi, Yeongyang, 0.61-m Newtonian);
    06.31, 12.9, 1.3' (D. Heggie, UDRO, Utah, USA, 0.25-m Hyperboloid astro-camera + CCD; 5' tail in p.a. 245 deg);
    06.18, 13.0, 1.2' (A. Pearce, 0.25-m Newtonian + CCD; 2.7' tail in p.a. 237 deg);
    05.54, 12.2, 0.6' (O. Miyazaki, 0.32-m Newtonian);
    05.39, 12.7, 1.7' (A. Pearce, 0.25-m Newtonian + CCD; 2.3' tail in p.a. 233 deg);
    04.99, 11.7, 5.2' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD; 0.12° tail in p.a. 257 deg);
    04.72, 12.6, 0.8' (O. Miyazaki, 0.32-m Newtonian);
    04.66, 13.0, -- (P. Yi, Yeongyang, 0.61-m Newtonian);
    03.65, 12.6, 1.3' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 10' tail in p.a. 255 deg);
    03.07, 12.8, 1.3' (A. Pearce, 0.3-m Ritchey-Chretien + CCD; 12.4' tail in p.a. 261 deg);
    02.00, 12.7, 1.9' (A. Pearce, 0.3-m Ritchey-Chretien + CCD; 9.8' tail in p.a. 259 deg);
    01.38, 12.5, 2.3' (A. Pearce, 0.25-m Newtonian + CCD; 4.9' tail in p.a. 256 deg);
    01.02, 12.6, 2.8' (A. Pearce, 0.23-m Newtonian + CCD; 16.1' tail in p.a. 255 deg);
may 31.00, 11.6, 1.2' (M. Filipek, 0.25-m Newtonian);
    29.54, 12.3, 1' (O. Miyazaki, 0.32-m Newtonian);
    29.00, 11.8, 4.6' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD; 0.24° tail in p.a. 259 deg);
    26.05, 11.5, 4.1' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    25.96, 13.1, 0.82' (S. Shurpakov, 0.41-m Newtonian + CCD);
    24.96, 13.2, 0.82' (S. Shurpakov, 0.41-m Newtonian + CCD);
    23.05, 10.3, 3.7' (P. Dekelver, 0.3-m Newtonian + CCD; 20.3' tail in p.a. 263 deg);

C/2022 E2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
may 29.88, 14.0, 1' (T. Lehmann, Nerpio (remote), 0.25-m Newtonian + CCD; 1.7' tail in p.a. 117 deg);
    28.89, 13.8, 1.4' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD; 0.9' tail in p.a. 126 deg);

C/2022 L2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
jun 13.45, 15.3, 0.8' (A. Pearce, 0.35-m Schmidt-Cassegrain + CCD);
    08.02, 15.1, 0.9' (A. Pearce, 0.25-m Newtonian + CCD);
    07.47, 15.7, 0.7' (A. Pearce, 0.35-m Schmidt-Cassegrain + CCD);
    03.82, 14.1, 3' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.1° tail in p.a. 90 deg);
may 31.48, 16.0, 0.5' (A. Pearce, 0.35-m Schmidt-Cassegrain + CCD);
    26.77, 14.4, 2.3' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.18° tail in p.a. 89 deg);

C/2022 N2 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
jun 17.99, 16.3, 0.4' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
    16.99, 16.3, 0.4' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
    15.16, 16.3, 0.7' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 1.3' tail in p.a. 245 deg);
    15.02, 16.5, 0.4' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD; 0.4' tail in p.a. 241 deg);
    11.02, 16.5, 0.3' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD; 0.4' tail in p.a. 230 deg);
    09.05, 16.4, 0.5' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD; 0.8' tail in p.a. 240 deg);
    08.07, 16.3, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    05.14, 16.5, 0.8' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 1.5' tail in p.a. 247 deg);
    02.10, 16.2, 0.5' (A. Pearce, 0.36-m Ritchey-Chretien + CCD; 0.7' tail in p.a. 256 deg);

C/2022 S4 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
jun 20.18, 16.5, 1.1' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD);

C/2022 U1 (Leonard)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
jun 12.04, 14.8, 0.3' (P. Dekelver, 0.3-m Newtonian + CCD);
    08.02, 16.3, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
may 23.07, 16.6, 0.3' (P. Dekelver, 0.3-m Newtonian + CCD);

C/2023 A3 (Tsuchinshan-ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
jun 20.92, 11.0, 2' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    20.74, 10.1, 4.6' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.27° tail in p.a. 101 deg);
    20.46, 11.0, 2.1' (A. Pearce, 0.05-m Refractor + CCD; 11.2' tail in p.a. 99 deg);
    19.51, 10.6, 1' (O. Miyazaki, 0.32-m Newtonian);
    19.47, 10.9, 1.3' (A. Pearce, 0.05-m Refractor + CCD; 11.3' tail in p.a. 100 deg);
    18.90, 10.8, 2' (V. Gonano, Udine, Italy, 20x80 Binoculars; 11' tail in p.a. 100 deg);
    18.79, 10.1, 5.5' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.28° tail in p.a. 101 deg);
    18.49, 11.0, 1.5' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 12' tail in p.a. 100 deg);
    18.49, 9.6, 1.9' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 10' tail in p.a. 100 deg);
    18.49, 10.5, 1.9' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 12' tail in p.a. 100 deg);
    17.90, 10.2, 3.9' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD; 0.19° tail in p.a. 101 deg);
    15.95, 11.2, 1.2' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    15.75, 10.3, 3.9' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.25° tail in p.a. 101 deg);
    15.48, 11.5, 2.2' (A. Pearce, 0.05-m Refractor + CCD; 10.7' tail in p.a. 99 deg);
    14.90, 10.8, 2.2' (V. Gonano, Udine, Italy, 20x80 Binoculars; 0.15° tail in p.a. 100 deg);
    13.90, 10.6, 2' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD; 0.14° tail in p.a. 101 deg);
    13.88, 10.7, 2' (V. Gonano, Udine, Italy, 20x80 Binoculars; 6' tail in p.a. 100 deg);
    13.47, 11.4, 1.9' (A. Pearce, 0.35-m Schmidt-Cassegrain + CCD; 5.8' tail in p.a. 101 deg);
    13.46, 11.3, 1.6' (A. Pearce, 0.05-m Refractor + CCD; 12.7' tail in p.a. 100 deg);
    12.93, 11.1, 1.5' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    11.92, 10.6, 3.7' (P. Dekelver, 0.3-m Newtonian + CCD; 14.3' tail in p.a. 99 deg);
    11.90, 10.7, 2.6' (E. Bryssinck, 0.4-m Newtonian + CCD; 10.4' tail in p.a. 99 deg);
    11.90, 10.2, 4.6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.24° tail in p.a. 104 deg);
    11.88, 10.2, 4.7' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.24° tail in p.a. 100 deg);
    11.36, 10.3, 1.4' (C. Wyatt, 0.25-m Newtonian; 10' tail in p.a. 106 deg);
    10.98, 10.2, 4' (J. de Souza Aguiar, 0.27-m Newtonian);
    10.94, 10.8, 1' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain; 0.15° tail in p.a. 110 deg);
    10.91, 10.7, 2.4' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD; 17' tail in p.a. 100 deg);
    10.90, 10.8, 2' (A. Valvasori, 0.3-m Newtonian + CCD);
    10.90, 9.9, 1' (A. Amorim, 0.09-m Refractor);
    10.90, 10.3, 1' (V. Gonano, Udine, Italy, 20x80 Binoculars; 0.15° tail in p.a. 110 deg);
    10.83, 10.7, 2' (G. Pappa, Pedara,Sicily,Italy, 0.3-m Camera lens + CCD; 8' tail);
    10.50, 10.5, 1.9' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 11' tail in p.a. 100 deg);
    10.50, 11.3, 1.9' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 10' tail in p.a. 100 deg);
    10.50, 9.6, 1.9' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 11' tail in p.a. 100 deg);
    10.19, 11.2, 2' (A. Pearce, 0.25-m Newtonian + CCD; 12.6' tail in p.a. 101 deg);
    09.99, 10.2, 4' (J. de Souza Aguiar, 0.27-m Newtonian);
    09.94, 9.9, 4' (M. Goiato, 0.22-m Newtonian);
    09.92, 10.3, 1.4' (C. Harder, Kirchheim/ Thüringen Sternwarte, 0.252-m Newtonian);
    09.91, 10.2, 4.8' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.24° tail in p.a. 103 deg);
    09.90, 9.9, 1' (A. Amorim, 0.09-m Refractor);
    09.90, 10.7, 3.7' (P. Dekelver, 0.3-m Newtonian + CCD; 18.5' tail in p.a. 97 deg);
    09.82, 10.3, 4.7' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.26° tail in p.a. 101 deg);
    09.18, 11.3, 2' (A. Pearce, 0.25-m Newtonian + CCD; 12.6' tail in p.a. 100 deg);
    08.98, 10.2, 4' (J. de Souza Aguiar, 0.27-m Newtonian);
    08.93, 10.2, 2' (A. Scholten, Eerbeek, 0.2-m Newtonian);
    08.90, 10.6, 3.7' (P. Dekelver, 0.3-m Newtonian + CCD; 14' tail in p.a. 99 deg);
    08.82, 10.0, 1.5' (V. Gonano, Udine, Italy, 20x80 Binoculars; 0.07° tail in p.a. 100 deg);
    08.02, 11.4, 1.6' (A. Pearce, 0.18-m Newtonian + CCD; 14.9' tail in p.a. 102 deg);
    07.93, 10.4, 3.4' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.22° tail in p.a. 102 deg);
    07.92, 9.8, 1.6' (A. Kammerer, Voelkersbach (Black Forest), Germany, 0.397-m Newtonian; 0.07° tail in p.a. 105 deg);
    07.91, 10.2, 5.1' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD; 0.25° tail in p.a. 100 deg);
    07.90, 10.7, 3.7' (P. Dekelver, 0.3-m Newtonian + CCD; 14.4' tail in p.a. 99 deg);
    07.90, 9.7, -- (A. Amorim, 0.09-m Refractor);
    07.88, 11.0, 0.81' (S. Shurpakov, 0.41-m Newtonian + CCD; 8.5' tail in p.a. 101 deg);
    07.49, 11.3, 1.8' (A. Pearce, 0.05-m Refractor + CCD; 8.5' tail in p.a. 101 deg);
    07.15, 10.2, 1.5' (D. Zubenel, De Soto, Kansas., 0.15-m Newtonian);
    06.98, 10.3, 4' (J. de Souza Aguiar, 0.27-m Newtonian);
    06.93, 10.3, 4.4' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.24° tail in p.a. 102 deg);
    06.91, 10.2, 5.4' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD; 0.19° tail in p.a. 99 deg);
    06.91, 10.8, 2.2' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD; 16' tail in p.a. 98 deg);
    06.90, 9.7, 2' (A. Amorim, 0.09-m Refractor);
    06.82, 10.2, 1.5' (V. Gonano, Udine, Italy, 20x80 Binoculars);
    06.76, 10.2, 6.3' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.26° tail in p.a. 100 deg);
    06.16, 10.2, 1.5' (C. Hergenrother, Tanque Verde, Arizona, 30x125.0 Binoculars);
    05.99, 10.4, 4' (J. de Souza Aguiar, 0.27-m Newtonian);
    05.91, 9.8, 1' (P. Pérez Corujo, Vega de San Mateo Gran Canaria, 25x100 Binoculars);
    05.87, 10.1, -- (J. Fallai, Ginestra Fiorentina, Italy, 0.072-m Refractor + CCD);
    05.87, 10.3, 3' (M. Paradowski, 0.075-m Refractor + CCD; 0.1° tail in p.a. 102 deg);
    05.86, 10.2, 3' (M. Paradowski, 0.075-m Refractor + CCD; 0.1° tail in p.a. 102 deg);
    05.85, 10.2, 3' (M. Paradowski, 0.075-m Refractor + CCD; 0.1° tail in p.a. 102 deg);
    05.79, 10.3, 5.1' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.25° tail in p.a. 101 deg);
    05.59, 10.2, -- (J. Xiong, Daocheng, China(remote,O40), 0.203-m Newtonian + CCD);
    05.52, 10.9, 1' (O. Miyazaki, 0.32-m Newtonian; 12' tail in p.a. 100 deg);
    05.46, 11.4, 1.6' (A. Pearce, 0.05-m Refractor + CCD; 11.5' tail in p.a. 101 deg);
    05.28, 10.2, 6.8' (T. Lehmann, Utah (remote), 0.106-m Refractor + CCD; 0.21° tail in p.a. 104 deg);
    05.00, 9.9, 1.3' (W. Kutschera, 0.13-m Newtonian; 0.1° tail);
    05.00, 10.8, 1.3' (V. Díaz, La Romana, Alicante, Spain, 0.15-m Newtonian; 2' tail in p.a. 115 deg);
    04.99, 10.4, 4' (J. de Souza Aguiar, 0.27-m Newtonian);
    04.93, 10.8, 2.2' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD; 15' tail in p.a. 98 deg);
    04.92, 10.9, 1.5' (C. Labordena, Culla, 0.2-m Schmidt-Cassegrain; 8' tail);
    04.91, 10.3, 1.5' (U. Pilz, 0.32-m Newtonian; 0.08° tail in p.a. 190 deg);
    04.90, 10.1, 7.6' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD; 0.21° tail in p.a. 99 deg);
    04.83, 10.6, 2' (V. Gonano, Udine, Italy, 20x80 Binoculars; 0.08° tail in p.a. 190 deg);
    04.78, 10.2, 6.1' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.26° tail in p.a. 100 deg);
    04.65, 10.5, -- (P. Yi, Yeongyang, 0.61-m Newtonian; 4' tail);
    04.57, 10.6, -- (J. Xiong, Daocheng, China(remote,O40), 0.203-m Newtonian + CCD);
    04.50, 10.6, 2' (K. Yoshimoto, 20x100 Binoculars);
    04.50, 10.2, 2.1' (Y. Yamaguchi, 0.13-m Hyperboloid astro-camera + CCD; 9' tail in p.a. 101 deg);
    03.99, 10.5, 4' (J. de Souza Aguiar, 0.27-m Newtonian);
    03.92, 10.9, 2' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD; 15' tail in p.a. 98 deg);
    03.80, 10.2, 7.1' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.28° tail in p.a. 101 deg);
    03.50, 11.6, 1.8' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 9' tail in p.a. 100 deg);
    03.50, 10.7, 1.8' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 10' tail in p.a. 100 deg);
    03.49, 9.8, 1.8' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 9' tail in p.a. 100 deg);
    03.45, 11.3, 1.9' (A. Pearce, 0.35-m Schmidt-Cassegrain + CCD; 7.7' tail in p.a. 100 deg);
    03.35, 10.6, 1' (C. Wyatt, 0.25-m Newtonian; 10' tail in p.a. 110 deg);
    02.98, 10.5, 3' (J. de Souza Aguiar, 0.27-m Newtonian);
    02.95, 9.3, 3.2' (M. Collins, Everton, 0.254-m Schmidt-Cassegrain);
    02.92, 10.7, 3.7' (P. Dekelver, 0.3-m Newtonian + CCD);
    02.91, 10.7, 2.6' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD; 15' tail in p.a. 98 deg);
    02.78, 10.3, 5.8' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.25° tail in p.a. 102 deg);
    01.99, 10.4, 3' (J. de Souza Aguiar, 0.27-m Newtonian);
    01.96, 11.2, 1.5' (K. Hills, 0.5-m Newtonian + CCD);
    01.94, 11.0, 1' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain; 0.15° tail in p.a. 110 deg);
    01.91, 11.0, 2' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD; 15' tail in p.a. 98 deg);
    01.85, 10.5, 2.2' (M. Paradowski, 0.075-m Refractor + CCD; 5.3' tail in p.a. 100 deg);
    01.82, 10.0, 3' (V. Gonano, Udine, Italy, 20x80 Binoculars);
    01.78, 10.2, 6' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.28° tail in p.a. 100 deg);
    01.53, 9.9, 2' (J. Pile, San Rafael, Bulacan, Philippines, 0.114-m Newtonian; 3' tail in p.a. 110 deg);
may 31.98, 10.3, 3' (J. de Souza Aguiar, 0.27-m Newtonian);
    31.96, 10.8, 0.96' (S. Silva, TUGA Observatory, 0.279-m Schmidt-Cassegrain + CCD);
    31.95, 10.2, 1' (W. Souza, 0.15-m Newtonian);
    31.94, 10.1, 1' (W. Souza, 20x80 Binoculars);
    31.94, 10.7, 1.3' (M. Mašek, 0.25-m Schmidt-Cassegrain + CCD; 8.8' tail in p.a. 101 deg);
    31.94, 11.1, 1.3' (M. Mašek, 0.25-m Schmidt-Cassegrain + CCD; 8.5' tail in p.a. 100 deg);
    31.91, 10.9, 2.2' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD; 14' tail in p.a. 98 deg);
    31.77, 10.3, 5.6' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.28° tail in p.a. 100 deg);
    31.46, 11.6, 1.8' (A. Pearce, 0.35-m Schmidt-Cassegrain + CCD; 5.7' tail in p.a. 102 deg);
    30.99, 10.3, 3' (J. de Souza Aguiar, 0.27-m Newtonian);
    30.99, 10.1, 1' (W. Souza, 0.15-m Newtonian);
    30.98, 10.1, 1' (W. Souza, 20x80 Binoculars);
    30.97, 9.8, 1' (M. Paling, Appledorne Observatory, 1.23-m Refractor);
    30.97, 9.9, 2' (M. Filipek, 0.25-m Newtonian);
    30.97, 9.8, 1' (M. Paling, Appledorne Observatory, 1.23-m Refractor + CCD);
    30.93, 10.7, 2.1' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD; 14' tail in p.a. 98 deg);
    30.79, 10.3, 5.3' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.26° tail in p.a. 101 deg);
    30.62, 10.3, -- (J. Xiong, Daocheng, China(remote,O40), 0.203-m Newtonian + CCD);
    30.15, 10.2, 1.5' (C. Hergenrother, Tanque Verde, Arizona, 30x125.0 Binoculars);
    29.98, 10.4, 3' (J. de Souza Aguiar, 0.27-m Newtonian);
    29.97, 10.2, 1' (W. Souza, 0.15-m Newtonian);
    29.97, 10.9, 3.7' (P. Dekelver, 0.3-m Newtonian + CCD);
    29.96, 10.2, 1' (W. Souza, 20x80 Binoculars);
    29.96, 11.8, -- (S. Purabiya, Ahmedabad, 1.53-m Ritchey-Chretien + CCD);
    29.94, 10.7, 3' (T. Lehmann, Nerpio (remote), 0.25-m Newtonian + CCD; 0.2° tail in p.a. 102 deg);
    29.93, 9.8, 2' (A. Scholten, Eerbeek, 0.2-m Newtonian);
    29.93, 10.9, 1' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain; 0.1° tail in p.a. 100 deg);
    29.93, 9.9, 1.5' (M. Paling, Appledorne Observatory, 0.123-m Refractor + CCD);
    29.86, 10.3, 3' (V. Gonano, Udine, Italy, 20x80 Binoculars);
    29.77, 10.3, 4.8' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.24° tail in p.a. 100 deg);
    29.64, 10.4, -- (J. Xiong, Daocheng, China(remote,O40), 0.203-m Newtonian + CCD);
    29.55, 9.9, 1.7' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 9' tail in p.a. 102 deg);
    29.55, 10.7, 1.7' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 9' tail in p.a. 102 deg);
    29.54, 11.5, 1.7' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 9' tail in p.a. 102 deg);
    29.47, 10.7, 1' (O. Miyazaki, 0.32-m Newtonian; 8' tail in p.a. 100 deg);
    29.37, 10.7, 2' (C. Wyatt, 0.4-m Newtonian; 10' tail in p.a. 100 deg);
    28.92, 10.4, 4.8' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD; 0.28° tail in p.a. 99 deg);
    28.91, 10.4, 4.1' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.28° tail in p.a. 101 deg);
    28.91, 10.5, 2.2' (J. Chambó Bris, Valles, Valencia, Spain, 0.2-m Newtonian + CCD; 12' tail in p.a. 100 deg);
    28.90, 9.8, 1' (A. Amorim, 0.09-m Refractor);
    28.83, 11.0, 2' (G. Pappa, Pedara,Sicily,Italy, 0.3-m Camera lens + CCD; 5' tail);
    28.40, 10.7, 1.3' (C. Wyatt, 0.25-m Newtonian; 5.3' tail in p.a. 117 deg);
    28.01, 10.8, 3.7' (P. Dekelver, 0.3-m Newtonian + CCD; 12.7' tail in p.a. 98 deg);
    27.96, 10.8, 0.9' (D. Swan, Tynemouth, UK, 0.2-m "small telescopes" with aperture in range 4-10 inches + CCD);
    27.93, 10.6, 3.2' (T. Lehmann, Nerpio (remote), 0.25-m Newtonian + CCD; 0.23° tail in p.a. 101 deg);
    27.82, 10.5, 2' (V. Gonano, Udine, Italy, 20x80 Binoculars);
    27.40, 10.0, 2' (M. Mattiazzo, Swan Hill, Victoria, 25x100 Binoculars);
    27.15, 10.0, 2' (C. Hergenrother, Tanque Verde, Arizona, 30x125.0 Binoculars);
    26.89, 10.3, 1.4' (M. Kwinta, 0.3-m Newtonian);
    26.87, 10.3, -- (J. Fallai, Ginestra Fiorentina, Italy, 0.072-m Refractor + CCD);
    26.79, 10.5, 3.5' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.22° tail in p.a. 100 deg);
    26.68, 10.5, -- (J. Xiong, Daocheng, China(remote,O40), 0.203-m Newtonian + CCD);
    26.49, 11.3, 1.6' (A. Pearce, 0.05-m Refractor + CCD; 8.6' tail in p.a. 100 deg);
    26.35, 10.6, 1.2' (C. Wyatt, 0.25-m Newtonian; 8' tail in p.a. 102 deg);
    26.19, 10.2, 2' (C. Hergenrother, Tanque Verde, Arizona, 30x125.0 Binoculars);
    25.98, 10.9, 2.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    25.95, 11.1, 2.44' (K. Hills, 0.5-m Newtonian + CCD);
    25.92, 10.0, 2' (A. Scholten, Eerbeek, 0.2-m Newtonian);
    25.90, 10.6, 3.7' (T. Lehmann, Nerpio (remote), 0.25-m Newtonian + CCD; 0.21° tail in p.a. 101 deg);
    25.89, 11.0, 3.7' (P. Dekelver, 0.3-m Newtonian + CCD; 11.2' tail in p.a. 99 deg);
    25.88, 10.4, 2' (A. Balashov, Nizhny Novgorod, 0.035-m Camera lens + CCD; 10' tail in p.a. 120 deg);
    25.87, 11.6, 0.7' (S. Shurpakov, 0.41-m Newtonian + CCD; 7.8' tail in p.a. 108 deg);
    25.81, 10.5, 2' (V. Gonano, Udine, Italy, 20x80 Binoculars);
    25.50, 9.9, 1.5' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 8' tail in p.a. 102 deg);
    25.50, 11.7, 1.5' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 8' tail in p.a. 102 deg);
    25.50, 10.8, 1.5' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 8' tail in p.a. 102 deg);
    25.14, 10.4, 1.5' (D. Zubenel, De Soto, Kansas., 0.15-m Newtonian);
    24.90, 10.3, 0.7' (S. Shurpakov, 0.41-m Newtonian);
    24.88, 11.4, 0.62' (S. Shurpakov, 0.41-m Newtonian + CCD; 6.8' tail in p.a. 102 deg);
    24.87, 10.7, 3.1' (T. Lehmann, Nerpio (remote), 0.25-m Newtonian + CCD; 0.2° tail in p.a. 101 deg);
    24.78, 10.6, 2.9' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.19° tail in p.a. 102 deg);
    24.61, 10.4, -- (J. Xiong, Daocheng, China(remote,O40), 0.203-m Newtonian + CCD);
    24.46, 11.2, 1.9' (A. Pearce, 0.05-m Refractor + CCD; 6.1' tail in p.a. 101 deg);
    23.90, 10.5, 3.1' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.21° tail in p.a. 100 deg);
    23.62, 10.7, -- (J. Xiong, Daocheng, China(remote,O40), 0.203-m Newtonian + CCD);
    23.13, 10.4, -- (D. Zubenel, De Soto, Kansas., 0.318-m Newtonian);
    22.98, 11.5, -- (S. Purabiya, Ahmedabad, 0.153-m Ritchey-Chretien + CCD);
    22.89, 10.8, 3.7' (P. Dekelver, 0.3-m Newtonian + CCD; 11.8' tail in p.a. 97 deg);
    22.81, 10.5, 3' (V. Gonano, Udine, Italy, 20x80 Binoculars);

C/2023 C2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
jun 11.92, 13.5, 2.1' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 1.5' tail in p.a. 301 deg);
    05.62, 14.4, 0.5' (A. Pearce, 0.35-m Schmidt-Cassegrain + CCD);
    03.48, 14.2, 0.7' (A. Pearce, 0.51-m Schmidt-Cassegrain + CCD);
    02.12, 13.8, 1' (J. de Souza Aguiar, 0.3-m Newtonian);
    01.13, 13.8, 1' (J. de Souza Aguiar, 0.3-m Newtonian);
may 31.55, 14.2, 0.8' (A. Pearce, 0.35-m Schmidt-Cassegrain + CCD);
    30.94, 13.4, 2.5' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 1.9' tail in p.a. 294 deg);
    29.42, 14.0, 0.4' (C. Wyatt, 0.4-m Newtonian);

C/2023 F3 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
jun 06.86, 16.5, 0.3' (G. Pappa, Namibia (remote control), 0.106-m Refractor + CCD);

C/2023 H5 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
jun 07.94, 16.8, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
may 22.96, 17.6, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);

C/2023 S3 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
may 25.92, 19.3, 0.38' (K. Hills, 0.5-m Newtonian + CCD);

C/2023 V4 (Camarasa-Duszanowicz)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
jun 19.90, 10.7, 1' (V. Gonano, Udine, Italy, 20x80 Binoculars);
    19.50, 10.9, 0.9' (O. Miyazaki, 0.32-m Newtonian);
    17.95, 11.2, 1.8' (M. Paradowski, Dabrowa, Poland, 0.05-m Camera lens + CCD);
    17.94, 11.0, 1.8' (M. Paradowski, Dabrowa, Poland, 0.05-m Camera lens + CCD);
    17.93, 11.6, 1.8' (M. Paradowski, Dabrowa, Poland, 0.05-m Camera lens + CCD);
    17.93, 11.1, 5.4' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD; 0.1° tail in p.a. 236 deg);
    17.92, 10.7, 3' (V. Gonano, Udine, Italy, 20x80 Binoculars);
    13.90, 10.7, 2.3' (V. Gonano, Udine, Italy, 20x80 Binoculars);
    13.89, 11.2, 3.8' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD; 0.09° tail in p.a. 226 deg);
    12.00, 11.2, 2.2' (M. Paradowski, 0.068-m Refractor + CCD);
    12.00, 11.1, 2.2' (M. Paradowski, 0.068-m Refractor + CCD);
    11.99, 11.5, 2.2' (M. Paradowski, 0.068-m Refractor + CCD);
    11.96, 11.2, 2.2' (M. Paradowski, 0.068-m Refractor + CCD);
    11.95, 11.1, 2.2' (M. Paradowski, 0.068-m Refractor + CCD);
    11.95, 10.0, 1' (V. Gonano, Udine, Italy, 20x80 Binoculars);
    11.94, 11.1, 3.7' (P. Dekelver, 0.3-m Newtonian + CCD; 5.8' tail in p.a. 222 deg);
    11.93, 11.1, 2.2' (M. Paradowski, 0.068-m Refractor + CCD);
    10.90, 10.2, 2' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain);
    10.82, 11.5, 1' (G. Pappa, Pedara,Sicily,Italy, 0.3-m Camera lens + CCD);
    09.94, 11.1, 4.4' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.13° tail in p.a. 222 deg);
    09.92, 11.0, 3.7' (P. Dekelver, 0.3-m Newtonian + CCD; 3.8' tail in p.a. 223 deg);
    09.91, 11.0, 1' (C. Harder, Kirchheim/ Thüringen Sternwarte, 0.252-m Newtonian);
    08.99, 11.2, 1.5' (E. van Dijk, 0.254-m Jones-Bird telescope);
    07.96, 11.1, 3.6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.14° tail in p.a. 223 deg);
    07.04, 11.3, 1.5' (P. Dekelver, 0.3-m Newtonian + CCD);
    05.96, 10.7, 2.4' (M. Paradowski, 0.075-m Refractor + CCD);
    05.95, 10.5, 2.4' (M. Paradowski, 0.075-m Refractor + CCD);
    05.93, 9.9, 2.4' (M. Paradowski, 0.075-m Refractor + CCD; 1.5' tail in p.a. 16 deg);
    04.91, 10.9, -- (U. Pilz, 0.32-m Newtonian);
    04.89, 10.8, 1.5' (C. Labordena, Culla, 0.2-m Schmidt-Cassegrain);
    01.89, 9.3, 4' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain);
may 29.89, 9.9, 2.5' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain);
    27.91, 11.0, 2.2' (M. Paradowski, Dabrowa, Poland, 0.05-m Camera lens + CCD);
    27.90, 11.0, 3.3' (M. Paradowski, Dabrowa, Poland, 0.05-m Camera lens + CCD);
    27.90, 10.8, 3.3' (M. Paradowski, Dabrowa, Poland, 0.05-m Camera lens + CCD);
    27.89, 10.7, 3.3' (M. Paradowski, Dabrowa, Poland, 0.05-m Camera lens + CCD);
    27.89, 11.2, 2.2' (M. Paradowski, Dabrowa, Poland, 0.05-m Camera lens + CCD);
    27.88, 11.0, 2.2' (M. Paradowski, Dabrowa, Poland, 0.05-m Camera lens + CCD);
    27.88, 10.9, 2.2' (M. Paradowski, Dabrowa, Poland, 0.05-m Camera lens + CCD; 2.6' tail in p.a. 20 deg);

C/2024 C4 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
jun 09.97, 17.9, 1.2' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1.5' tail in p.a. 181 deg);
may 28.05, 17.1, 0.7' (P. Dekelver, 0.3-m Newtonian + CCD);
    23.01, 17.9, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);

C/2024 E1 (Wierzchos)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
jun 08.00, 19.9, 0.3' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);

C/2024 G1 (Wierzchos)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
may 25.03, 19.7, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);

C/2024 G3 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
jun 12.77, 17.5, 0.3' (K. Yoshimoto, 0.51-m Newtonian + CCD; 0.4' tail in p.a. 55 deg);