29P/Schwassmann-Wachmann
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 27.44, 13.6, 2.4' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    26.90, 10.5, 5' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain);
    26.43, 13.1, 2.1' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    25.44, 13.3, 2.1' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    24.43, 13.1, 1.9' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    20.88, 13.8, 1.5' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    18.89, 13.6, 1.3' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    17.88, 14.5, 1.6' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    17.36, 12.5, 2.5' (J. Chambó Bris, Siding Spring, Australia, 0.432-m Ritchey-Chretien + CCD);
    16.88, 14.1, 1.3' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    15.91, 10.6, 7' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain);
    15.90, 13.4, 2.6' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    14.89, 13.7, 1.7' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    12.89, 13.4, 1.7' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    11.89, 13.1, 1' (J. de Souza Aguiar, 0.3-m Newtonian);
    09.89, 13.0, 1.7' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    08.90, 14.0, 1.7' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    06.92, 15.9, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    06.91, 13.5, 1.8' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    05.89, 14.4, 1.1' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    05.49, 13.0, 0.8' (O. Miyazaki, 0.32-m Newtonian);


47P/Ashbrook-Jackson
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 28.20, 17.7, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    26.12, 17.4, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);


65P/Gunn
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 18.08, 16.7, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    03.12, 15.2, 1.4' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD);


88P/Howell
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 20.89, 18.9, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    15.74, 18.1, 0.5' (T. Lehmann, Hakos (remote), 0.45-m Newtonian + CCD);


93P/Lovas
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 28.11, 20.7, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


105P/Singer Brewster
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 24.18, 19.3, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);


145P/Shoemaker-Levy
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 28.18, 20.9, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


217P/LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 26.42, 12.9, 1.2' (M. Mašek, Malargue, 0.107-m Camera lens + CCD; 1.1' tail in p.a. 254 deg);
    22.43, 12.8, 1' (M. Mašek, Malargue, 0.3-m Cassegrain reflector + CCD; 3.7' tail in p.a. 256 deg);
    22.43, 13.1, 1' (M. Mašek, Malargue, 0.3-m Cassegrain reflector + CCD; 4.1' tail in p.a. 251 deg);
    19.85, 12.8, 1' (M. Mattiazzo, Strathalbyn, South Australia, 0.07-m Camera lens + CCD);
    07.43, 12.7, 1' (M. Mattiazzo, Rio Hurtado Valley, Chile, 0.25-m Newtonian + CCD; 15' tail in p.a. 246 deg);
    02.35, 12.8, 1' (J. de Souza Aguiar, 0.3-m Newtonian);


333P/LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 12.26, 19.4, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);


362P
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 29.04, 18.6, 0.31' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD);


496P/Hill
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 17.18, 15.7, 2.6' (T. Lehmann, PieTown (remote), 0.3-m Newtonian + CCD; 1.2' tail in p.a. 290 deg);


C/2014 UN271 (Bernardinelli-Bernstein)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 25.41, 14.8, 0.9' (K. Yoshimoto, 0.25-m Newtonian + CCD);


C/2020 V2 (ZTF)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 06.38, 15.5, 1.2' (M. Mašek, Malargue, 0.3-m Cassegrain reflector + CCD);
    01.15, 15.8, 1.5' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD);
may 31.93, 15.9, 0.8' (A. Pearce, Skygems Namibia Remote Observatory, 0.45-m Schmidt-Cassegrain + CCD);


C/2021 G2 (Atlas)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 27.51, 14.2, 0.8' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    26.92, 11.8, 2.5' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain);
    26.92, 14.1, 1.5' (K. Hills, 0.5-m Newtonian + CCD);
    26.50, 14.4, 0.8' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    25.95, 14.0, 0.9' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    25.92, 13.9, 1.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.17° tail in p.a. 233 deg);
    25.89, 14.0, 1.4' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD; 3.4' tail in p.a. 229 deg);
    25.51, 14.4, 0.8' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    23.93, 14.0, -- (F. Fremont, Niort, France, 0.073-m Refractor + CCD);
    23.17, 13.9, 2' (T. Lehmann, PieTown (remote), 0.3-m Newtonian + CCD; 0.3° tail in p.a. 234 deg);
    21.94, 14.0, 2.1' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.17° tail in p.a. 234 deg);
    21.92, 13.9, 1.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.24° tail in p.a. 235 deg);
    21.88, 14.4, 1.4' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 3.2' tail in p.a. 234 deg);
    21.52, 13.6, 0.9' (O. Miyazaki, 0.32-m Newtonian);
    20.88, 13.6, 2' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 4.4' tail in p.a. 229 deg);
    20.88, [16.6, 13.5' (L. Sannino, Osservatorio Monte Viseggi 126, 0.4-m Cassegrain reflector + CCD; 8" tail in p.a. 330 deg);
    20.87, 14.1, 1.8' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 3.2' tail in p.a. 232 deg);
    20.87, 14.5, 2' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 5.8' tail in p.a. 232 deg);
    20.86, 14.7, 0.9' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    19.92, 13.9, 1.6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.25° tail in p.a. 234 deg);
    18.95, 14.1, 1.13' (K. Hills, 0.5-m Newtonian + CCD);
    18.88, 14.3, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 3.7' tail in p.a. 229 deg);
    18.88, 13.7, 1.8' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 8' tail in p.a. 234 deg);
    18.87, 14.5, 2' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 8.3' tail in p.a. 234 deg);
    18.20, 13.9, 1.5' (T. Lehmann, PieTown (remote), 0.3-m Newtonian + CCD; 0.26° tail in p.a. 234 deg);
    17.89, 13.6, 2' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 9.8' tail in p.a. 228 deg);
    17.88, 14.3, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 3.1' tail in p.a. 227 deg);
    17.87, 14.4, 2.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 13.1' tail in p.a. 230 deg);
    17.21, 13.9, 1.5' (T. Lehmann, PieTown (remote), 0.3-m Newtonian + CCD; 0.26° tail in p.a. 234 deg);
    16.89, 14.0, 1.7' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 1.1' tail in p.a. 225 deg);
    15.93, 11.9, 2.5' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain);
    14.88, 14.5, 1.3' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 1.9' tail in p.a. 226 deg);
    13.91, 13.9, 1.4' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.17° tail in p.a. 235 deg);
    13.89, 14.0, 2.2' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 2.4' tail in p.a. 233 deg);
    13.86, 14.5, 1.4' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 4' tail in p.a. 234 deg);
    11.93, 14.0, 2.2' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.09° tail in p.a. 234 deg);
    11.91, 13.9, 1.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.16° tail in p.a. 233 deg);
    05.10, 15.3, 2' (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);
    04.51, 13.6, 1.3' (Y. Yamaguchi, 0.13-m Hyperboloid astro-camera + CCD);
    03.99, 13.8, 1.5' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.22° tail in p.a. 234 deg);
    03.05, 13.9, 1.4' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.13° tail in p.a. 233 deg);
    01.94, 13.9, 1.5' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.19° tail in p.a. 234 deg);
may 31.98, 13.8, 1.5' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.17° tail in p.a. 234 deg);


C/2021 S3 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 21.99, 18.1, 0.4' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    20.94, 18.7, 0.4' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);


C/2022 E2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 29.10, 14.0, 1.1' (W. Kutschera, 0.76-m Newtonian);
    26.10, 14.9, 0.6' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    22.03, 14.7, 1.5' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.07° tail in p.a. 68 deg);
    22.02, 15.6, 0.7' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    20.99, 14.4, 1.1' (M. Kalina, 0.08-m Refractor + CCD);
    20.97, 15.4, 0.7' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 0.3' tail in p.a. 320 deg);
    20.93, 14.6, 1.2' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 0.2' tail in p.a. 313 deg);
    20.93, 15.4, 1.2' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 0.4' tail in p.a. 325 deg);
    20.01, 14.7, 1.1' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.1° tail in p.a. 66 deg);
    17.03, 14.7, 1.4' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.05° tail in p.a. 65 deg);
    16.19, 16.3, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    15.43, 14.8, 0.9' (T. Lehmann, PieTown (remote), 0.3-m Newtonian + CCD; 0.09° tail in p.a. 64 deg);
    14.98, 15.4, 0.7' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    13.94, 16.1, 0.5' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    12.03, 14.8, 1.2' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.04° tail in p.a. 62 deg);
    07.12, 15.8, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);


C/2022 N2 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 17.43, 15.0, 1' (T. Lehmann, PieTown (remote), 0.3-m Newtonian + CCD; 0.06° tail in p.a. 251 deg);


C/2022 U1 (Leonard)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 24.09, 17.7, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);


C/2023 A3 (Tsuchinshan-ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 27.57, 15.6, 0.6' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD);
    25.97, 16.7, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    24.91, 16.3, 0.75' (K. Hills, 0.5-m Newtonian + CCD);
    23.37, 13.7, 3.4' (T. Lehmann, PieTown (remote), 0.3-m Newtonian + CCD);
    21.94, 17.1, 0.3' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    20.91, 15.7, 0.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    20.90, 16.2, 0.8' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    20.87, 16.7, 0.4' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    18.94, 15.5, 1.1' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.6' tail in p.a. 176 deg);
    17.00, 14.8, 0.7' (W. Kutschera, 0.508-m Newtonian);
    13.90, 17.0, 0.4' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    12.97, 13.1, 4.9' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    09.99, 16.2, 0.5' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.6' tail in p.a. 197 deg);
    06.04, 15.9, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    03.24, 16.2, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);
    01.01, 16.3, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


C/2023 C2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 29.98, 15.5, 0.15' (C. Harder, Jeersdorf f, 0.531-m Newtonian);
    28.78, 15.7, 0.5' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 1' tail in p.a. 240 deg);
    26.07, 15.4, 0.8' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    26.04, 15.3, 0.7' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD);
    24.09, 14.9, 0.7' (W. Kutschera, 0.508-m Newtonian + CCD);
    22.10, 14.5, 0.8' (W. Kutschera, 0.76-m Newtonian);
    22.02, 14.7, 2.2' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.17° tail in p.a. 230 deg);
    22.01, 15.6, 0.7' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    22.00, 15.6, 1.5' (M. Lošťák, 0.2-m Newtonian + CCD);
    21.09, 14.7, 0.8' (W. Kutschera, 0.508-m Newtonian + CCD);
    20.96, 14.9, 0.8' (M. Kalina, 0.08-m Refractor + CCD);
    20.94, 15.8, 1.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    20.94, 14.9, 1.5' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    20.93, 16.0, 0.6' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 0.2' tail in p.a. 214 deg);
    19.01, 15.7, 0.6' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.8' tail in p.a. 231 deg);
    18.43, 15.0, 1.5' (T. Lehmann, PieTown (remote), 0.3-m Newtonian + CCD; 0.12° tail in p.a. 228 deg);
    14.97, 16.1, 0.5' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    14.00, 15.3, 1.3' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.6' tail in p.a. 244 deg);
    13.92, 16.2, 0.5' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    11.96, 15.2, 1' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.6' tail in p.a. 238 deg);
    06.10, 15.4, 0.6' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);


C/2023 H5 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 28.88, 16.9, 0.39' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD; 1.3' tail in p.a. 177 deg);
    25.94, 17.5, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    23.19, 16.6, 0.6' (T. Lehmann, PieTown (remote), 0.3-m Newtonian + CCD; 1.7' tail in p.a. 173 deg);
    21.91, 17.5, 0.6' (M. Lošťák, 0.2-m Newtonian + CCD);
    21.91, 16.3, 0.6' (M. Lošťák, 0.2-m Newtonian + CCD);
    21.91, 16.2, 0.7' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    21.90, 16.7, 0.9' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 1.9' tail in p.a. 175 deg);
    20.92, 16.4, 0.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 1.4' tail in p.a. 170 deg);
    20.92, 17.0, 0.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 0.4' tail in p.a. 166 deg);
    20.91, 17.3, 0.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 1.6' tail in p.a. 172 deg);
    18.94, 17.2, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    18.90, 16.6, 1.3' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 1.6' tail in p.a. 171 deg);
    13.93, 16.7, 0.7' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 1.3' tail in p.a. 171 deg);
    12.92, 16.6, 0.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 2.1' tail in p.a. 170 deg);
    11.89, 16.9, 0.9' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 1.5' tail in p.a. 175 deg);
    09.90, 16.9, 0.5' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.5' tail in p.a. 168 deg);


C/2023 R1 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 26.03, 16.5, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    26.03, 16.2, 0.6' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD);
    26.02, 16.0, 0.6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.5' tail in p.a. 99 deg);
    22.01, 15.8, 0.6' (W. Kutschera, 0.508-m Newtonian + CCD);
    22.00, 16.1, 0.8' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.8' tail in p.a. 80 deg);
    22.00, 15.3, 0.7' (M. Lošťák, 0.2-m Newtonian + CCD);
    21.96, 15.8, 0.7' (M. Lošťák, 0.2-m Newtonian + CCD);
    21.96, 16.7, 0.7' (M. Lošťák, 0.2-m Newtonian + CCD);
    21.96, 16.6, 0.7' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    20.95, 16.5, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 0.3' tail in p.a. 102 deg);
    20.91, 16.7, 0.5' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    19.98, 15.9, 1.2' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.7' tail in p.a. 86 deg);
    19.40, 16.1, 0.7' (T. Lehmann, PieTown (remote), 0.3-m Newtonian + CCD; 0.8' tail in p.a. 94 deg);
    16.96, 16.0, 0.8' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.7' tail in p.a. 85 deg);
    14.92, 16.0, 0.7' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    14.05, 16.1, 0.6' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD);
    13.96, 16.1, 0.7' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.6' tail in p.a. 84 deg);
    13.93, 16.3, 0.6' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    13.02, 16.3, 0.6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.3' tail in p.a. 105 deg);
    10.03, 16.6, 0.8' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.6' tail in p.a. 87 deg);
    06.08, 16.7, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);


C/2023 T3 (Fuls)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 18.93, 16.5, 0.56' (K. Hills, 0.5-m Newtonian + CCD);
    14.96, 16.5, 0.56' (K. Hills, 0.5-m Newtonian + CCD);


C/2023 V1 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 05.15, 18.3, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);


C/2024 B1 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 24.93, 18.3, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    16.09, 18.4, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    02.07, 17.8, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


C/2024 E1 (Wierzchos)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 29.97, 15.1, 0.3' (C. Harder, Jeersdorf f, 0.531-m Newtonian);
    29.91, 15.8, 0.35' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD; 0.4' tail in p.a. 166 deg);
    28.94, 15.8, 0.35' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD; 0.4' tail in p.a. 167 deg);
    28.92, 16.3, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    28.91, 15.9, 0.7' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD);
    26.96, 14.7, 0.4' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain);
    26.92, 15.9, 0.3' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD; 0.4' tail in p.a. 180 deg);
    26.90, 15.6, 1.2' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.6' tail in p.a. 177 deg);
    25.99, 16.1, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    25.96, 15.7, 0.6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.4' tail in p.a. 181 deg);
    25.02, 16.4, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    22.04, 15.7, 0.8' (S. Fritsche, Koeditz, 0.05-m Refractor + CCD; 0.5' tail in p.a. 221 deg);
    21.96, 15.7, 0.6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.5' tail in p.a. 197 deg);
    21.92, 16.6, 0.7' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 0.2' tail in p.a. 190 deg);
    21.02, 16.6, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    21.00, 15.6, 1.1' (M. Kalina, 0.08-m Refractor + CCD);
    20.89, 16.2, 0.7' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 0.3' tail in p.a. 181 deg);
    19.96, 15.8, 0.6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.5' tail in p.a. 196 deg);
    18.98, 15.8, 1' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.7' tail in p.a. 184 deg);
    18.90, 16.2, 0.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 0.2' tail in p.a. 203 deg);
    18.90, 15.5, 0.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 0.3' tail in p.a. 204 deg);
    18.89, 16.2, 0.8' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 0.3' tail in p.a. 201 deg);
    18.54, 15.9, 0.4' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 0.3' tail in p.a. 230 deg);
    18.26, 15.8, 0.6' (T. Lehmann, PieTown (remote), 0.3-m Newtonian + CCD; 0.5' tail in p.a. 201 deg);
    16.11, 16.6, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    14.91, 16.0, 0.8' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    14.04, 16.1, 0.6' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD);
    14.03, 16.1, 0.7' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.4' tail in p.a. 217 deg);
    13.89, 16.0, 0.7' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    12.00, 16.0, 0.9' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.6' tail in p.a. 211 deg);
    11.96, 15.9, 0.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.4' tail in p.a. 214 deg);
    09.95, 16.0, 0.7' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.4' tail in p.a. 216 deg);
    06.02, 16.4, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    05.16, 16.6, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    05.13, 16.3, 8' (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD; 20' tail in p.a. 200 deg);
may 31.93, 16.3, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


C/2024 G4 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 05.14, 18.3, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);


C/2024 G6 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 19.93, 18.2, 0.6' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);


C/2024 J3 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 26.01, 16.2, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    23.41, 15.5, 0.9' (T. Lehmann, PieTown (remote), 0.3-m Newtonian + CCD; 1.3' tail in p.a. 198 deg);
    18.09, 16.5, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    06.06, 16.3, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    02.04, 15.9, 0.8' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 1' tail in p.a. 205 deg);
    01.20, 16.3, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


C/2024 J4 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 03.12, 18.4, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);


C/2024 L5 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 18.92, 17.5, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


C/2024 N3 (Sarneczky)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 03.57, 18.2, 0.2' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD);


C/2024 R4 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 28.09, 18.2, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    11.19, 18.3, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


C/2025 J1 (Borisov)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 25.93, 19.0, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    12.15, 19.2, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);
    03.31, 19.0, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);


C/2025 K1 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 29.01, 14.9, 0.4' (R. Haver, Frasso Sabino, Rieti, Italy, 0.368-m Cassegrain reflector + CCD; 2.5' tail in p.a. 231 deg);
    28.76, 15.7, 0.5' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 1' tail in p.a. 235 deg);
    28.02, 16.7, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    26.05, 16.2, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    25.99, 15.4, 0.33' (R. Haver, Frasso Sabino, 0.368-m Cassegrain reflector + CCD; 2' tail in p.a. 232 deg);
    25.99, 16.1, 0.4' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.8' tail in p.a. 244 deg);
    21.99, 16.3, 0.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.7' tail in p.a. 239 deg);
    20.96, 16.9, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 1.1' tail in p.a. 237 deg);
    20.96, 16.2, 0.8' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 0.5' tail in p.a. 240 deg);
    20.02, 16.4, 0.7' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.7' tail in p.a. 237 deg);
    19.43, 16.6, 0.5' (T. Lehmann, PieTown (remote), 0.3-m Newtonian + CCD; 0.9' tail in p.a. 243 deg);
    17.00, 16.7, 0.8' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    12.01, 17.1, 0.4' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.4' tail in p.a. 225 deg);
    08.11, 17.8, 0.19' (J. Ryske, Y71 Makroskooppi, Fregenal de la Sierra, Spain, 0.3-m Ritchey-Chretien + CCD; 0.13' tail in p.a. 250 deg);
    06.12, 17.4, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    04.74, 17.4, 0.3' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 0.3' tail in p.a. 250 deg);
    03.28, 17.6, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);
    02.15, 17.8, 0.4' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD);


C/2025 K4 (Siverd)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 05.29, 19.0, 0.2' (M. Mašek, Malargue, 0.3-m Cassegrain reflector + CCD);


C/2025 L2
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 12.31, 18.7, 0.2' (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);
    05.38, 19.5, 0.2' (M. Mašek, Malargue, 0.3-m Cassegrain reflector + CCD);


P/2010 H2 (Vales)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 15.01, 16.6, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


P/2025 C1 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jun 12.09, 19.7, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);