Recent Comet Brightness Estimates

29P/Schwassmann-Wachmann
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
dec 11.77, 11.7, 3.1' (K. Harikae, 0.15-m Newtonian + CCD);
    10.15, 11.2, 4.1' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    09.81, 11.9, 2' (O. Miyazaki, 0.32-m Newtonian);
    08.85, 11.8, 2.5' (P. Yi, Yeongyang, 0.61-m Newtonian);
    08.82, 11.8, 2.7' (O. Miyazaki, 0.32-m Newtonian);
    08.81, 11.7, 3.8' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD);
    08.80, 11.4, 2.8' (S. Yoshida, 0.4-m Newtonian);
    08.11, 11.8, 3.57' (K. Hills, 0.5-m Newtonian + CCD);
    06.76, 11.6, 2.4' (K. Harikae, 0.15-m Newtonian + CCD);
    06.74, 11.3, 1.3' (Y. Nagai, 0.054-m Camera lens + CCD);
    05.79, 11.6, 2.1' (O. Miyazaki, 0.32-m Newtonian);
    04.82, 11.5, 1.7' (O. Miyazaki, 0.32-m Newtonian);
    04.19, 11.3, 1.5' (T. Karhula, Virsbo, Sweden, 25x100 Binoculars);
    04.10, 11.5, 2' (G. Pappa, Piemonte,Italy (remote control), 0.3-m Ritchey-Chretien + CCD);
    03.20, 12.0, 2' (M. Phillips, ASERO Trevinca Skies, Spain, 0.3-m Newtonian + CCD);
    03.14, 11.8, 3.2' (K. Hills, 0.5-m Newtonian + CCD);
    03.03, 12.1, 1.5' (T. Sciezor, 0.06-m Camera lens);
    02.99, 11.5, 1.2' (M. Filipek, 0.4-m Newtonian);
    02.76, 11.5, 2.6' (K. Harikae, 0.15-m Newtonian + CCD);
    02.03, 11.2, 2' (P. Guzik, 25x100 Binoculars);
    01.81, 11.7, 1.3' (O. Miyazaki, 0.32-m Newtonian);
    01.13, 11.5, 6.2' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    01.13, 11.8, 3.2' (K. Hills, 0.5-m Newtonian + CCD);
    01.06, 11.6, 1' (U. Pilz, 0.32-m Newtonian);
    01.04, 11.1, 4.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    01.02, 11.4, 1.5' (C. Harder, Jeersdorf f, 0.531-m Newtonian);
nov 30.83, 11.4, 2' (R. Aikawa, 0.203-m Schmidt-Cassegrain);
    30.83, 11.8, 1.3' (O. Miyazaki, 0.32-m Newtonian);
    30.14, 11.6, 2' (M. Meyer, 0.254-m Newtonian);
    30.14, 11.2, 1.7' (W. Kutschera, 0.25-m Newtonian);
    30.13, 11.5, 5.9' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    30.09, 11.4, 1.8' (C. Harder, Jeersdorf h, 0.252-m Newtonian);
    30.01, 12.2, 1.2' (C. Harder, nahe Wangersen, 0.531-m Newtonian);
    29.81, 11.7, 1.3' (O. Miyazaki, 0.32-m Newtonian);
    29.77, 11.7, 1.9' (K. Harikae, 0.15-m Newtonian + CCD);
    29.15, 11.6, 1.8' (M. Meyer, 0.254-m Newtonian);
    29.14, 11.7, 3.01' (K. Hills, 0.5-m Newtonian + CCD);
    29.11, 11.2, -- (G. van Buitenen, Dordrecht, NL (G06), 0.203-m Ritchey-Chretien + CCD);
    29.09, 11.2, 4.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    28.80, 11.6, 1.5' (O. Miyazaki, 0.32-m Newtonian);
    28.77, 11.7, 1.7' (K. Harikae, 0.15-m Newtonian + CCD);
    28.11, 11.6, 2' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain);
    28.09, 11.6, 2.3' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    27.83, 11.8, 2.5' (M. Phillips, ASERO Trevinca Skies, Spain, 0.3-m Newtonian + CCD);
    27.81, 11.5, 1.2' (O. Miyazaki, 0.32-m Newtonian);
    27.18, 11.4, 2.6' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    25.79, 12.8, 0.6' (O. Miyazaki, 0.32-m Newtonian);
    25.14, 11.7, 3.2' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    23.19, 12.5, 1.3' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    23.05, 11.4, 2.6' (P. Dekelver, 0.3-m Newtonian + CCD);
    22.09, 11.4, 2.9' (P. Dekelver, 0.3-m Newtonian + CCD);

30P/Reinmuth
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
dec 10.22, 18.1, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    01.23, 17.1, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);

32P/Comas Sola
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
nov 30.17, 16.5, 0.7' (P. Dekelver, 0.3-m Newtonian + CCD);

33P/Daniel
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
dec 08.08, 18.2, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
nov 30.97, 18.5, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    23.00, 18.8, 0.38' (K. Hills, 0.5-m Newtonian + CCD);

37P/Forbes
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
dec 17.09, 13.9, 0.4' (M. Olason, SaddleBrooke, 0.05-m Refractor + CCD);
    04.07, 12.9, 0.8' (M. Olason, SaddleBrooke, Arizona, 0.05-m Refractor + CCD);
nov 29.78, 12.6, 2.7' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 1.2' tail in p.a. 94 deg);
    28.77, 13.8, 1.1' (A. Pearce, Namibia, 0.106-m Refractor + CCD);
    27.77, 13.6, 0.9' (A. Pearce, Namibia, 0.106-m Refractor + CCD);
    24.92, 13.6, 0.5' (J. de Souza Aguiar, 0.3-m Newtonian);

43P/Wolf-Harrington
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
nov 30.88, 15.8, 0.7' (P. Dekelver, 0.3-m Newtonian + CCD);
    30.80, 15.9, 1.3' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1.9' tail in p.a. 262 deg);
    30.02, 15.5, 0.7' (P. Dekelver, 0.3-m Newtonian + CCD);
    29.93, 15.8, 1.7' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.6' tail in p.a. 254 deg);
    29.03, 15.7, 0.7' (P. Dekelver, 0.3-m Newtonian + CCD);
    22.05, 16.0, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    21.86, 15.9, -- (G. van Buitenen, Dordrecht, NL (G06), 0.203-m Ritchey-Chretien + CCD);

49P/Arend-Rigaux
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
nov 26.93, 17.7, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    26.87, 18.1, 0.38' (K. Hills, 0.5-m Newtonian + CCD);

54P/de Vico-Swift-NEAT
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
dec 03.98, 20.3, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
nov 26.95, 20.0, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    26.93, 20.4, 0.38' (K. Hills, 0.5-m Newtonian + CCD);

74P/Smirnova-Chernykh
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
nov 21.99, 20.6, 0.38' (K. Hills, 0.5-m Newtonian + CCD);

95P/Chiron
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
dec 03.93, 18.8, 0.38' (K. Hills, 0.5-m Newtonian + CCD);

117P/Helin-Roman-Alu
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
dec 07.91, 19.2, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
nov 21.94, 19.2, 0.38' (K. Hills, 0.5-m Newtonian + CCD);

130P/McNaught-Hughes
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
dec 18.44, 17.2, 0.4' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD);
    04.01, 17.1, 0.56' (K. Hills, 0.5-m Newtonian + CCD);
    01.80, 15.5, 1.6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.35° tail in p.a. 247 deg);
nov 30.97, 15.1, 2.6' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.08° tail in p.a. 247 deg);
    30.90, 16.0, 1.1' (P. Dekelver, 0.3-m Newtonian + CCD; 6.2' tail in p.a. 244 deg);
    30.05, 16.0, 0.7' (P. Dekelver, 0.3-m Newtonian + CCD; 3.2' tail in p.a. 242 deg);
    29.06, 16.0, 0.7' (P. Dekelver, 0.3-m Newtonian + CCD; 3.7' tail in p.a. 250 deg);
    28.83, 15.3, 2' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.11° tail in p.a. 244 deg);
    26.99, 16.0, 0.8' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    26.97, 17.5, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    25.01, 16.0, 1' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 1' tail in p.a. 251 deg);
    22.69, 15.9, 0.7' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    22.07, 15.0, 1.1' (P. Dekelver, 0.3-m Newtonian + CCD; 5.8' tail in p.a. 251 deg);
    21.88, 15.1, -- (G. van Buitenen, Dordrecht, NL (G06), 0.203-m Ritchey-Chretien + CCD);

136P/Mueller
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
nov 26.88, 19.9, 0.38' (K. Hills, 0.5-m Newtonian + CCD);

146P/Shoemaker-LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
dec 08.03, 18.9, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    01.87, 17.3, 0.9' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.04° tail in p.a. 239 deg);
    01.06, 17.5, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
nov 30.13, 18.2, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD; 0.8' tail in p.a. 222 deg);
    29.15, 18.1, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    27.05, 18.5, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    22.93, 19.1, 0.38' (K. Hills, 0.5-m Newtonian + CCD);

154P/Brewington
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
dec 01.10, 15.8, 2.7' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
nov 29.20, 19.1, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    27.13, 18.8, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);

158P/Kowal-LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
nov 27.03, 21.1, 0.38' (K. Hills, 0.5-m Newtonian + CCD);

190P/Mueller
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
nov 26.90, 19.7, 0.38' (K. Hills, 0.5-m Newtonian + CCD);

242P/Spahr
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
nov 30.96, 17.5, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    28.96, 18.6, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    21.97, 18.7, 0.38' (K. Hills, 0.5-m Newtonian + CCD);

250P/Larson
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
nov 29.05, 20.3, 0.38' (K. Hills, 0.5-m Newtonian + CCD);

253P/PANSTARRS
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
dec 03.97, 18.6, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
nov 30.86, 17.2, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD);
    26.92, 18.4, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    22.66, 17.4, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);

276P/Vorobjov
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
nov 30.97, 17.1, 0.6' (T. Lehmann, Weimar, 0.3-m Newtonian + CCD; 1.9' tail in p.a. 273 deg);
    29.97, 17.2, 0.8' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.8' tail in p.a. 274 deg);
    22.56, 17.4, 0.3' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 1' tail in p.a. 265 deg);

302P/Lemmon-PANSTARRS
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
dec 03.78, 18.8, 0.2' (G. Pappa, Namibia (remote control), 0.36-m Ritchey-Chretien + CCD);

305P/Skiff
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
nov 30.83, 17.1, 0.6' (T. Lehmann, Weimar, 0.3-m Newtonian + CCD; 1.7' tail in p.a. 74 deg);

333P/LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
dec 20.72, 11.4, 2.5' (C. Harder, Jeersdorf f, 0.252-m Newtonian);
    19.80, 11.6, 2.5' (C. Harder, Jeersdorf f, 0.252-m Newtonian);
    19.39, 12.1, 0.9' (O. Miyazaki, 0.32-m Newtonian);
    18.39, 11.6, 1.6' (O. Miyazaki, 0.32-m Newtonian);
    17.82, 11.8, 0.5' (G. Pappa, Spain (remote control), 0.5-m Prime focus of a reflector + CCD; 1.5' tail);
    17.40, 12.2, 2.3' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 2' tail in p.a. 15 deg);
    12.85, 13.3, 0.8' (H. Kiiskinen, 0.4-m Ritchey-Chretien + CCD; 2' tail in p.a. 345 deg);
    11.77, 11.9, 2.7' (K. Harikae, 0.15-m Newtonian + CCD);
    10.20, 11.6, 5.3' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    09.82, 11.6, 1.8' (O. Miyazaki, 0.32-m Newtonian);
    08.85, 12.7, 1' (P. Yi, Yeongyang, 0.61-m Newtonian);
    08.85, 11.6, 3' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 2.5' tail in p.a. 320 deg);
    08.85, 12.4, 1.4' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 2.5' tail in p.a. 320 deg);
    08.85, 12.1, 0.7' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 1' tail in p.a. 320 deg);
    08.82, 11.5, 1.5' (S. Yoshida, 0.4-m Newtonian);
    08.81, 11.4, 2.1' (O. Miyazaki, 0.32-m Newtonian);
    08.73, 10.8, 3' (C. Labordena, Les Useres, 0.2-m Schmidt-Cassegrain);
    06.79, 9.7, 5' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain);
    06.76, 11.6, 3.3' (K. Harikae, 0.15-m Newtonian + CCD; 3' tail in p.a. 305 deg);
    06.68, 11.7, 2' (Y. Nagai, 0.054-m Camera lens + CCD);
    05.92, 12.7, 0.3' (D. Heggie, Edinburgh, Scotland, 0.114-m Prime focus of a reflector + CCD; 2.3' tail in p.a. 308 deg);
    05.84, 11.9, 2.7' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 3.3' tail in p.a. 310 deg);
    05.84, 12.0, 1' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD);
    05.84, 12.7, 1.5' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD);
    05.81, 11.5, 2.4' (O. Miyazaki, 0.32-m Newtonian);
    04.20, 10.3, 4' (T. Karhula, Virsbo, Sweden, 0.305-m Newtonian);
    03.80, 11.4, 1.2' (O. Miyazaki, 0.32-m Newtonian);
    02.76, 11.8, 2.8' (K. Harikae, 0.15-m Newtonian + CCD; 3' tail in p.a. 300 deg);
    02.16, 11.6, 2' (E. Banach, 0.25-m Newtonian);
    02.06, 10.4, 2' (U. Pilz, 0.32-m Newtonian);
    02.04, 10.9, 4' (P. Guzik, 25x100 Binoculars);
    01.82, 11.5, 1.8' (O. Miyazaki, 0.32-m Newtonian);
    01.21, 12.6, 1.8' (P. Dekelver, 0.3-m Newtonian + CCD; 3.3' tail in p.a. 297 deg);
    01.17, 10.7, 13' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.12° tail in p.a. 298 deg);
    01.17, 12.2, 3.95' (K. Hills, 0.5-m Newtonian + CCD);
    01.13, 11.0, 8.8' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.1° tail in p.a. 299 deg);
    01.02, 11.2, 1.8' (C. Harder, Jeersdorf f, 0.531-m Newtonian);
nov 30.82, 11.4, 1.9' (O. Miyazaki, 0.32-m Newtonian);
    30.17, 10.6, 16' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.11° tail in p.a. 298 deg);
    30.16, 11.5, 3' (M. Meyer, 0.254-m Newtonian);
    30.08, 11.1, 2.4' (C. Harder, Jeersdorf h, 0.252-m Newtonian);
    30.02, 12.4, 1.8' (C. Harder, nahe Wangersen, 0.531-m Newtonian);
    29.97, 13.0, 1.3' (P. Dekelver, 0.3-m Newtonian + CCD; 3.1' tail in p.a. 296 deg);
    29.80, 12.2, 1.7' (O. Miyazaki, 0.32-m Newtonian);
    29.76, 11.9, 2.4' (K. Harikae, 0.15-m Newtonian + CCD; 1.2' tail in p.a. 297 deg);
    29.16, 11.6, 2.1' (M. Meyer, 0.254-m Newtonian);
    29.09, 12.1, -- (G. van Buitenen, Dordrecht, NL (G06), 0.203-m Ritchey-Chretien + CCD);
    28.79, 12.0, 1.6' (O. Miyazaki, 0.32-m Newtonian);
    28.23, 12.0, -- (M. Deconinck, Artignosc-sur-Verdon, Provence, France, 0.25-m Cassegrain reflector);
    28.16, 10.9, 2.2' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain);
    27.83, 12.0, 1.8' (O. Miyazaki, 0.32-m Newtonian);
    25.81, 12.8, 0.9' (O. Miyazaki, 0.32-m Newtonian);
    25.21, 11.3, 7.2' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.05° tail in p.a. 295 deg);
    23.86, 11.9, 3' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 2' tail in p.a. 295 deg);

338P/McNaught
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
nov 26.97, 18.6, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);

472P/NEAT-LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
nov 30.98, 15.4, 1.1' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1.5' tail in p.a. 312 deg);
    28.99, 15.2, -- (G. van Buitenen, Dordrecht, NL (G06), 0.203-m Ritchey-Chretien + CCD);

487P/SidingSpring
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
dec 07.94, 16.0, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    03.72, 15.0, 0.3' (G. Pappa, Piemonte,Italy (remote control), 0.3-m Ritchey-Chretien + CCD; 2' tail);
    01.80, 14.5, 0.3' (C. Harder, Jeersdorf f, 0.531-m Newtonian);
    01.47, 15.0, 0.4' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 1.2' tail in p.a. 190 deg);
    01.05, 14.9, 1.3' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 1.3' tail in p.a. 192 deg);
nov 30.93, 15.0, 0.4' (C. Harder, Jeersdorf f, 0.531-m Newtonian);
    30.83, 15.1, 0.9' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.05° tail in p.a. 193 deg);
    30.07, 14.3, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD; 0.7' tail in p.a. 203 deg);
    29.80, 14.6, 0.3' (C. Harder, nahe Wangersen, 0.531-m Newtonian);
    29.07, 14.9, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD; 0.8' tail in p.a. 185 deg);
    29.07, 15.9, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    22.14, 14.8, 0.7' (P. Dekelver, 0.3-m Newtonian + CCD; 1' tail in p.a. 209 deg);
    21.95, 15.8, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    21.92, 14.9, -- (G. van Buitenen, Dordrecht, NL (G06), 0.203-m Ritchey-Chretien + CCD);

492P/LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
dec 08.19, 19.7, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    01.07, 19.7, 0.38' (K. Hills, 0.5-m Newtonian + CCD);

496P/Hill
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
dec 07.87, 17.9, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    03.78, 17.0, 0.3' (G. Pappa, Namibia (remote control), 0.36-m Ritchey-Chretien + CCD);
nov 30.92, 16.8, 0.9' (T. Lehmann, Weimar, 0.3-m Newtonian + CCD);
    29.15, 15.8, 0.56' (K. Hills, 0.5-m Newtonian + CCD);

C/2014 UN271 (Bernardinelli-Bernstein)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
nov 22.75, 16.8, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);

C/2017 K2 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
dec 10.11, 15.3, 0.8' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    08.04, 16.0, 0.56' (K. Hills, 0.5-m Newtonian + CCD);
    01.92, 14.8, 1.6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1' tail in p.a. 119 deg);
    01.08, 15.1, 0.7' (P. Dekelver, 0.3-m Newtonian + CCD);
nov 30.19, 15.0, 0.9' (P. Dekelver, 0.3-m Newtonian + CCD; 0.5' tail in p.a. 88 deg);
    29.17, 15.3, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD);
    28.96, 14.8, -- (G. van Buitenen, Dordrecht, NL (G06), 0.203-m Ritchey-Chretien + CCD);
    27.07, 15.2, 0.6' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    24.97, 14.5, 2.6' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 1' tail in p.a. 125 deg);

C/2020 K1 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
dec 01.95, 16.1, 1.4' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD);

C/2020 V2 (ZTF)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
dec 01.80, 14.9, 1.8' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.15° tail in p.a. 75 deg);
nov 22.57, 15.6, 0.7' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);

C/2021 S3 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
dec 13.81, 15.6, 1.2' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    07.85, 17.1, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    01.45, 16.2, 0.4' (Y. Yamaguchi, 0.076-m Refractor + CCD);
nov 30.77, 15.2, 0.3' (P. Dekelver, 0.3-m Newtonian + CCD);
    30.76, 14.8, 2.4' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.15° tail in p.a. 271 deg);
    29.93, 15.2, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    28.97, 15.9, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD);
    28.91, 17.3, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    26.89, 15.0, 0.6' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    22.00, 15.3, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD);

C/2022 E2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
dec 20.73, 12.5, 0.6' (C. Harder, Jeersdorf f, 0.252-m Newtonian);
    19.79, 12.9, 0.8' (C. Harder, Jeersdorf f, 0.252-m Newtonian);
    19.41, 13.2, 1' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 6' tail in p.a. 90 deg);
    19.40, 12.6, 1.2' (O. Miyazaki, 0.32-m Newtonian);
    18.77, 13.3, 1.7' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.13° tail in p.a. 89 deg);
    12.86, 13.0, 1.2' (H. Kiiskinen, 0.4-m Ritchey-Chretien + CCD; 2.7' tail in p.a. 104 deg);
    11.77, 13.0, 1.3' (K. Harikae, 0.15-m Newtonian + CCD);
    09.82, 13.0, 1.5' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    09.80, 12.8, 0.8' (O. Miyazaki, 0.32-m Newtonian);
    08.87, 14.0, 0.75' (K. Hills, 0.5-m Newtonian + CCD);
    08.84, 12.9, 0.7' (P. Yi, Yeongyang, 0.61-m Newtonian);
    08.81, 13.1, 1.1' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    08.80, 12.7, 0.8' (O. Miyazaki, 0.32-m Newtonian);
    08.79, 12.2, 0.7' (S. Yoshida, 0.4-m Newtonian);
    06.83, 12.0, 1.3' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain);
    06.75, 13.1, 1.4' (K. Harikae, 0.15-m Newtonian + CCD);
    05.94, 13.4, 1.3' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD; 8.8' tail in p.a. 106 deg);
    05.78, 13.1, 1' (O. Miyazaki, 0.32-m Newtonian);
    03.93, 12.7, 0.94' (N. Quinn, 0.28-m Schmidt-Cassegrain + CCD);
    02.76, 13.1, 1.2' (K. Harikae, 0.15-m Newtonian + CCD);
    01.84, 13.1, 1.8' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.21° tail in p.a. 113 deg);
    01.80, 12.6, 0.9' (O. Miyazaki, 0.32-m Newtonian);
    01.74, 12.7, 1' (C. Harder, Jeersdorf f, 0.531-m Newtonian);
    01.49, 13.2, 1.2' (Y. Yamaguchi, 0.076-m Refractor + CCD; 2.2' tail in p.a. 109 deg);
nov 30.97, 12.4, 0.6' (M. Mašek, 0.4-m Newtonian);
    30.92, 12.7, 1.5' (C. Harder, Jeersdorf f, 0.531-m Newtonian);
    30.88, 13.8, 0.94' (K. Hills, 0.5-m Newtonian + CCD);
    30.86, 13.1, 1.9' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.2° tail in p.a. 115 deg);
    30.80, 13.3, 0.7' (O. Miyazaki, 0.32-m Newtonian);
    30.76, 12.6, 1.3' (C. Harder, Jeersdorf f, 0.252-m Newtonian);
    30.19, 12.3, 0.8' (M. Meyer, 0.254-m Newtonian);
    30.10, 12.9, 1.5' (P. Dekelver, 0.3-m Newtonian + CCD; 8.2' tail in p.a. 115 deg);
    30.01, 12.9, 2.7' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.2° tail in p.a. 116 deg);
    29.86, 12.8, 1.2' (C. Harder, nahe Wangersen, 0.531-m Newtonian);
    29.79, 12.5, 1.3' (O. Miyazaki, 0.32-m Newtonian);
    29.77, 13.0, 1.3' (K. Harikae, 0.15-m Newtonian + CCD);
    29.11, 13.0, 1.3' (P. Dekelver, 0.3-m Newtonian + CCD; 9.6' tail in p.a. 115 deg);
    28.96, 13.0, 0.56' (N. Quinn, 0.28-m Schmidt-Cassegrain + CCD);
    28.83, 12.9, 1' (O. Miyazaki, 0.32-m Newtonian);
    28.76, 13.1, 1.3' (K. Harikae, 0.15-m Newtonian + CCD);
    28.04, 11.8, 1.5' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain);
    27.99, 12.7, 0.94' (N. Quinn, 0.28-m Schmidt-Cassegrain + CCD);
    27.86, 13.6, 0.8' (D. Heggie, Edinburgh, Scotland, 0.114-m Prime focus of a reflector + CCD; 3' tail in p.a. 123 deg);
    27.80, 12.8, 1.1' (O. Miyazaki, 0.32-m Newtonian);
    27.01, 13.1, 1.3' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    26.90, 12.6, 1' (C. Harder, Jeersdorf h, 0.252-m Newtonian);
    25.82, 13.3, 0.7' (O. Miyazaki, 0.32-m Newtonian);
    25.17, 13.1, 2.2' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.17° tail in p.a. 122 deg);
    23.20, 12.9, 2.7' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.16° tail in p.a. 124 deg);
    22.86, 13.7, 0.94' (K. Hills, 0.5-m Newtonian + CCD);
    22.78, 12.2, 1' (C. Harder, Jeersdorf h, 0.252-m Newtonian);
    22.47, 13.7, 0.9' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 4' tail in p.a. 130 deg);
    22.15, 12.8, 1.8' (P. Dekelver, 0.3-m Newtonian + CCD; 6.3' tail in p.a. 123 deg);
    21.95, 12.9, -- (G. van Buitenen, Dordrecht, NL (G06), 0.203-m Ritchey-Chretien + CCD);

C/2022 L2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
dec 02.10, 16.5, 0.9' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.7' tail in p.a. 35 deg);

C/2022 N2 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
dec 13.76, 15.2, 1' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1.5' tail in p.a. 247 deg);
    02.86, 16.1, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
nov 30.81, 15.0, 0.7' (P. Dekelver, 0.3-m Newtonian + CCD; 1.8' tail in p.a. 244 deg);
    29.77, 14.7, 1.1' (P. Dekelver, 0.3-m Newtonian + CCD; 1.1' tail in p.a. 240 deg);
    28.81, 15.2, 1.1' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 2.2' tail in p.a. 248 deg);
    26.91, 16.0, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    26.89, 16.4, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    22.53, 16.0, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);

C/2022 QE78 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
dec 07.02, 15.6, 0.24' (C. Violette, Saint-Marcel, 0.13-m Newtonian + CCD; 0.91' tail);
    01.10, 15.2, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD; 1.7' tail in p.a. 249 deg);
    01.01, 15.1, 1' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1.9' tail in p.a. 250 deg);
nov 30.21, 15.1, 0.7' (P. Dekelver, 0.3-m Newtonian + CCD);
    30.09, 15.2, 1.3' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 1' tail in p.a. 252 deg);
    29.18, 15.5, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD);
    29.12, 15.9, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    27.09, 15.7, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    22.81, 15.6, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    21.97, 15.1, -- (G. van Buitenen, Dordrecht, NL (G06), 0.203-m Ritchey-Chretien + CCD);

C/2022 U3 (Bok)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
nov 29.13, 18.8, 0.38' (K. Hills, 0.5-m Newtonian + CCD);

C/2023 A3 (Tsuchinshan-ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
dec 20.72, 10.2, 1.3' (T. Sciezor, 0.06-m Camera lens; 8' tail in p.a. 57 deg);
    20.71, 9.8, 2.5' (M. Meyer, 0.152-m Refractor);
    20.70, 9.5, 1.5' (C. Harder, Jeersdorf f, 0.252-m Newtonian; 6' tail in p.a. 65 deg);
    19.75, 10.1, 2.4' (M. Collins, Everton, 0.254-m Schmidt-Cassegrain);
    19.37, 9.8, 2.1' (O. Miyazaki, 0.32-m Newtonian);
    15.37, 9.9, 1' (Y. Nagai, 0.044-m Camera lens + CCD);
    14.75, 9.5, 2.6' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD; 9' tail in p.a. 56 deg);
    13.72, 8.8, 6.1' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.87° tail in p.a. 69 deg);
    13.70, 10.3, 1.3' (J. Powichrowski, Knyszyn, 0.35-m Newtonian);
    12.76, 9.2, 2.7' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD; 16' tail in p.a. 59 deg);
    12.37, 9.4, 2' (O. Miyazaki, 0.32-m Newtonian; 2.5' tail in p.a. 80 deg);
    10.72, 9.5, 3' (V. Gonano, Udine, Italy, 20x80 Binoculars; 3' tail in p.a. 65 deg);
    10.72, 9.1, 3' (D. Heggie, Edinburgh, Scotland, 0.114-m Prime focus of a reflector + CCD; 12' tail in p.a. 60 deg);
    10.67, 9.4, 2' (K. Alburaidi, Al-Qassim Al-Bukayriyah, 20x80 Binoculars; 4' tail in p.a. 70 deg);
    10.39, 9.5, 1.1' (Y. Nagai, 0.044-m Camera lens + CCD; 2' tail in p.a. 60 deg);
    10.36, 9.1, 1.8' (O. Miyazaki, 0.32-m Newtonian; 6' tail in p.a. 72 deg);
    09.80, 8.4, 4.9' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    09.75, 9.9, 1.4' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD; 4' tail in p.a. 59 deg);
    09.37, 9.2, 1.4' (O. Miyazaki, 0.32-m Newtonian; 3' tail in p.a. 68 deg);
    08.79, 8.6, 5.1' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    08.75, 9.4, 1.5' (C. Labordena, Les Useres, 0.2-m Schmidt-Cassegrain; 12' tail);
    08.40, 9.3, 1.2' (Y. Nagai, 0.044-m Camera lens + CCD; 3' tail in p.a. 50 deg);
    08.40, 9.7, 1.2' (S. Yoshida, 0.4-m Newtonian);
    08.38, 9.1, 1.4' (O. Miyazaki, 0.32-m Newtonian; 3.7' tail in p.a. 76 deg);
    08.37, 9.2, 2.8' (O. Miyazaki, 20x80 Binoculars);
    07.83, 9.6, 4.32' (K. Hills, 0.5-m Newtonian + CCD);
    07.47, 9.7, 2' (J. Pile, San Rafael, Bulacan, Philippines, 0.114-m Newtonian);
    06.82, 8.7, 1.5' (J. Gonzalez Suarez, 20x80 Binoculars; 0.2° tail in p.a. 60 deg);
    06.81, 9.5, 1.5' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain; 0.3° tail in p.a. 60 deg);
    06.78, 9.0, 1.5' (V. Díaz, La Romana, Alicante, Spain, 0.2-m Newtonian; 10' tail in p.a. 65 deg);
    06.74, 9.5, 1.7' (V. Gonano, Udine, Italy, 20x80 Binoculars; 14' tail in p.a. 60 deg);
    06.38, 9.0, 1.9' (O. Miyazaki, 20x80 Binoculars; 15' tail in p.a. 63 deg);
    05.71, 8.9, 2.4' (M. Biely, Czech Republic, Brno, 20x80 Binoculars);
    05.44, 9.5, 2.08' (J. Pile, San Rafael, Bulacan, Philippines, 0.114-m Newtonian);
    05.44, 9.5, 2' (J. Pile, San Rafael, Bulacan, Philippines, 0.114-m Newtonian);
    05.36, 9.0, 1.7' (O. Miyazaki, 20x80 Binoculars; 12' tail in p.a. 60 deg);
    04.37, 9.0, 1.9' (O. Miyazaki, 20x80 Binoculars; 16' tail in p.a. 70 deg);
    03.72, 8.7, 4' (G. Pappa, Piemonte,Italy (remote control), 0.3-m Ritchey-Chretien + CCD; 15' tail);
    03.68, 8.6, 3.3' (M. Paradowski, 0.034-m Camera lens + CCD; 0.41° tail in p.a. 67 deg);
    03.68, 8.4, 3.3' (M. Paradowski, 0.034-m Camera lens + CCD; 0.41° tail in p.a. 67 deg);
    03.67, 8.6, 2' (T. Karhula, Virsbo, Sweden, 25x100 Binoculars; 15' tail in p.a. 70 deg);
    03.67, 8.8, 4' (M. Paradowski, 0.034-m Camera lens + CCD; 0.41° tail in p.a. 67 deg);
    03.66, 8.8, 0.9' (T. Sciezor, 0.06-m Camera lens; 2' tail in p.a. 52 deg);
    03.38, 8.4, 1.9' (O. Miyazaki, 20x80 Binoculars; 20' tail in p.a. 66 deg);
    02.76, 8.2, 2' (M. Filipek, 0.25-m Newtonian);
    02.75, 8.8, 2' (A. Scholten, Bussloo, 0.2-m Newtonian);
    02.75, 9.0, 2' (M. Kwinta, Krzesławice, 15x70 Binoculars; 15' tail in p.a. 64 deg);
    02.72, 9.0, 1.8' (V. Gonano, Udine, Italy, 20x80 Binoculars; 12' tail in p.a. 67 deg);
    02.65, 9.0, 1.8' (K. Alburaidi, Al-Bakiriya, 20x80 Binoculars; 9' tail in p.a. 75 deg);
    02.38, 8.8, 1.9' (O. Miyazaki, 20x80 Binoculars; 20' tail in p.a. 60 deg);
    01.71, 9.0, 1.5' (E. Banach, 0.25-m Newtonian; 5' tail in p.a. 65 deg);
    01.71, 9.0, 1.8' (C. Harder, Jeersdorf f, 0.531-m Newtonian; 11' tail in p.a. 62 deg);
    01.71, 8.2, 11' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 1.09° tail in p.a. 68 deg);
    01.71, 8.9, 1.8' (V. Kasten, 20x80 Binoculars);
    01.71, 8.4, 6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1.4° tail in p.a. 72 deg);
    01.71, 8.9, 4' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD; 0.7° tail in p.a. 68 deg);
    01.70, 8.5, 3' (J. Warell, Lindby (K60), 20x100 Binoculars; 8' tail in p.a. 65 deg);
    01.67, 9.3, 0.9' (T. Sciezor, 0.06-m Camera lens; 8' tail in p.a. 68 deg);
    01.39, 8.7, 2.2' (Y. Yamaguchi, 0.076-m Refractor + CCD; 21.6' tail in p.a. 65 deg);
    01.38, 8.9, 2.4' (O. Miyazaki, 20x80 Binoculars; 16' tail in p.a. 72 deg);
    01.37, 9.1, 1.1' (Y. Nagai, 0.054-m Camera lens + CCD; 2' tail in p.a. 60 deg);
nov 30.74, 8.9, 2.1' (V. Kasten, 20x80 Binoculars);
    30.73, 8.5, 11' (P. Dekelver, 0.3-m Newtonian + CCD; 22.8' tail in p.a. 66 deg);
    30.73, 9.0, 2' (C. Harder, Jeersdorf f, 0.252-m Newtonian; 14' tail in p.a. 60 deg);
    30.72, 8.8, 1.8' (M. Meyer, 0.152-m Refractor; 0.1° tail in p.a. 62 deg);
    30.71, 8.2, 7.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1.54° tail in p.a. 71 deg);
    30.71, 8.5, 3' (J. Warell, Lindby (K60), 20x100 Binoculars; 8' tail in p.a. 65 deg);
    30.69, 8.2, 7.8' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.64° tail in p.a. 64 deg);
    30.45, 9.0, 2.5' (J. Pile, San Rafael, Bulacan, Philippines, 0.114-m Newtonian);
    30.40, 8.8, 2' (R. Aikawa, 0.203-m Schmidt-Cassegrain);
    30.38, 8.7, 2.4' (O. Miyazaki, 20x80 Binoculars; 15' tail in p.a. 65 deg);
    29.82, 7.9, 3.9' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    29.77, 8.5, 1.8' (W. Kutschera, 0.08-m Refractor; 0.18° tail);
    29.77, 8.8, 2.9' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD; 21' tail in p.a. 63 deg);
    29.76, 8.6, 3.5' (A. Kammerer, Voelkersbach (Black Forest), Germany, 0.397-m Newtonian; 0.2° tail in p.a. 70 deg);
    29.76, 8.4, 1.1' (M. Collins, Everton, 0.254-m Schmidt-Cassegrain; 10.8' tail in p.a. 63 deg);
    29.75, 8.4, 6' (E. Bryssinck, 0.4-m Newtonian + CCD);
    29.75, 8.5, 9.2' (P. Dekelver, 0.3-m Newtonian + CCD; 25.1' tail in p.a. 67 deg);
    29.72, 8.9, 1.9' (V. Kasten, 20x80 Binoculars; 0.2° tail in p.a. 74 deg);
    29.72, 8.7, 1.8' (M. Meyer, 0.152-m Refractor; 0.15° tail in p.a. 78 deg);
    29.71, 8.8, 1.7' (C. Harder, nahe Wangersen, 0.252-m Newtonian; 17' tail in p.a. 65 deg);
    29.37, 8.6, 2.3' (O. Miyazaki, 20x80 Binoculars; 15' tail in p.a. 70 deg);
    28.80, 8.8, 2.5' (C. Labordena, La Serra d Engarcera, 11x80 Binoculars; 20' tail);
    28.77, 8.3, 1.1' (M. Collins, Everton, 0.254-m Schmidt-Cassegrain; 9.7' tail in p.a. 76 deg);
    28.77, 8.9, 4' (A. Pearce, Namibia, 0.106-m Refractor + CCD; 0.6° tail in p.a. 76 deg);
    28.74, 8.9, 2' (V. Gonano, Udine, Italy, 20x80 Binoculars; 12' tail in p.a. 76 deg);
    28.73, 8.7, 9.2' (P. Dekelver, 0.3-m Newtonian + CCD; 0.6° tail in p.a. 66 deg);
    28.71, 8.5, 9.7' (E. Bryssinck, 0.4-m Newtonian + CCD);
    28.65, 8.8, 3' (K. Alburaidi, Al-Bakiriya, 20x80 Binoculars; 10' tail in p.a. 70 deg);
    28.38, 9.0, 2' (Y. Nagai, 20x100 Binoculars; 5' tail in p.a. 60 deg);
    27.84, 9.6, 2.4' (M. Mašek, CTA-N La Palma, 0.25-m Schmidt-Cassegrain + CCD; 5.4' tail in p.a. 62 deg);
    27.83, 8.5, 3.5' (M. Mašek, CTA-N La Palma, 0.25-m Schmidt-Cassegrain + CCD; 9.4' tail in p.a. 69 deg);
    27.83, 8.1, 3.2' (M. Mašek, CTA-N La Palma, 0.25-m Schmidt-Cassegrain + CCD; 9.4' tail in p.a. 66 deg);
    27.77, 9.0, -- (J. Czyz, Lengdorf/ Germany, 0.152-m Maksutov);
    27.77, 8.9, 4' (A. Pearce, Namibia, 0.106-m Refractor + CCD; 0.6° tail in p.a. 75 deg);
    27.76, 8.4, 1.1' (M. Collins, Everton, 0.254-m Schmidt-Cassegrain; 14.6' tail in p.a. 70 deg);
    27.76, 8.6, 3.2' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD; 26' tail in p.a. 65 deg);
    27.44, 8.9, 2.5' (J. Pile, San Rafael, Bulacan, Philippines, 0.114-m Newtonian);
    26.97, 8.6, 2.5' (M. Goiato, 20x100 Binoculars; 0.3° tail in p.a. 55 deg);
    26.91, 8.8, 1' (J. de Souza Aguiar, 25x100 Binoculars);
    26.86, 9.7, 4.7' (K. Hills, 0.5-m Newtonian + CCD);
    26.83, 7.7, 5.5' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    26.77, 8.8, 5' (A. Pearce, Namibia, 0.106-m Refractor + CCD; 0.8° tail in p.a. 72 deg);
    26.76, 8.3, 2' (A. Scholten, Eerbeek, 0.2-m Newtonian);
    26.72, 8.4, 2' (M. Meyer, 0.152-m Refractor; 0.1° tail);
    26.72, 8.9, 2' (V. Gonano, Udine, Italy, 20x80 Binoculars; 24' tail in p.a. 70 deg);
    26.44, 9.1, 2.5' (J. Pile, San Rafael, Bulacan, Philippines, 0.114-m Newtonian);
    26.02, 8.7, 2.6' (D. Zubenel, De Soto, Kansas., 0.152-m Newtonian);
    25.91, 8.7, 2' (J. de Souza Aguiar, 25x100 Binoculars);
    25.81, 9.9, -- (J. Czyz, Lengdorf/ Germany, 0.152-m Maksutov);
    25.80, 8.1, 2' (J. Gonzalez Suarez, 10x50 Binoculars; 0.4° tail in p.a. 70 deg);
    25.76, 9.0, 1' (M. Collins, Everton, 0.254-m Schmidt-Cassegrain; 9' tail in p.a. 68 deg);
    25.71, 8.7, 1.5' (T. Sciezor, 0.06-m Camera lens; 6' tail in p.a. 49 deg);
    25.67, 8.4, 2' (J. Powichrowski, Knyszyn, 0.35-m Newtonian; 7' tail in p.a. 52 deg);
    25.37, 8.6, 1.7' (O. Miyazaki, 20x80 Binoculars; 0.3° tail in p.a. 75 deg);
    24.96, 8.4, 3' (M. Goiato, 20x100 Binoculars; 0.5° tail in p.a. 55 deg);
    24.91, 8.7, 2' (J. de Souza Aguiar, 25x100 Binoculars);
    24.73, 8.2, 2' (M. Meyer, 0.152-m Refractor; 0.15° tail in p.a. 65 deg);
    24.47, 8.9, 2.5' (J. Pile, San Rafael, Bulacan, Philippines, 0.114-m Newtonian; 5' tail in p.a. 65 deg);
    24.47, 8.9, 2.5' (J. Pile, San Rafael, Bulacan, Philippines, 0.114-m Newtonian);
    24.38, 8.3, 1.9' (O. Miyazaki, 20x80 Binoculars; 0.2° tail in p.a. 75 deg);
    23.77, 8.8, 5' (A. Pearce, Namibia, 0.106-m Refractor + CCD; 0.7° tail in p.a. 72 deg);
    23.73, 8.8, 2.5' (V. Gonano, Udine, Italy, 20x80 Binoculars; 14' tail in p.a. 70 deg);
    23.73, 9.0, 0.9' (T. Sciezor, 0.06-m Camera lens; 0.3° tail in p.a. 59 deg);
    23.73, 8.8, 2' (E. Banach, 0.25-m Newtonian; 10' tail in p.a. 70 deg);
    23.70, 7.8, 2' (T. Karhula, Virsbo, Sweden, 25x100 Binoculars; 25' tail in p.a. 70 deg);
    23.44, 8.8, 2.5' (J. Pile, San Rafael, Bulacan, Philippines, 0.114-m Newtonian);
    23.38, 8.9, 1.3' (O. Miyazaki, 20x80 Binoculars);
    23.36, 8.9, 1.1' (Y. Nagai, 0.044-m Camera lens + CCD; 2' tail in p.a. 60 deg);
    22.83, 8.5, 2.7' (M. Mašek, CTA-N La Palma, 0.25-m Schmidt-Cassegrain + CCD; 11.5' tail in p.a. 67 deg);
    22.83, 8.9, 2.7' (M. Mašek, CTA-N La Palma, 0.25-m Schmidt-Cassegrain + CCD);
    22.83, 9.7, 2.1' (M. Mašek, CTA-N La Palma, 0.25-m Schmidt-Cassegrain + CCD; 3.5' tail in p.a. 63 deg);
    22.78, 7.8, 1.2' (M. Collins, Everton, 0.254-m Schmidt-Cassegrain; 4.6' tail in p.a. 77 deg);
    22.78, 8.6, 2.1' (C. Harder, Jeersdorf h, 0.252-m Newtonian; 8' tail in p.a. 70 deg);
    22.77, 8.9, 5' (A. Pearce, Namibia, 0.106-m Refractor + CCD; 1° tail in p.a. 74 deg);
    22.73, 8.9, -- (A. Balashov, Nizhny Novgorod, 0.034-m Camera lens + CCD; 5' tail in p.a. 78 deg);
    22.48, 8.6, 2.5' (J. Pile, San Rafael, Bulacan, Philippines, 0.05-m Monocular 1x);
    22.03, 8.3, 3' (D. Zubenel, De Soto, Kansas., 0.152-m Newtonian);
    21.85, 9.2, 5.26' (K. Hills, 0.5-m Newtonian + CCD);
    21.83, 8.9, 1.5' (T. Sciezor, 0.06-m Camera lens; 0.2° tail in p.a. 68 deg);
    21.77, 8.6, 6' (A. Pearce, Namibia, 0.106-m Refractor + CCD; 0.9° tail in p.a. 73 deg);
    21.77, 8.0, 2' (P. Guzik, 25x100 Binoculars; 0.34° tail in p.a. 65 deg);
    21.76, 8.5, 2' (M. Meyer, 0.152-m Refractor);
    21.71, 8.7, 2' (V. Gonano, Udine, Italy, 20x80 Binoculars; 12' tail in p.a. 71 deg);

C/2023 C2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
nov 28.78, 14.1, 1.3' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD);

C/2023 H5 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
dec 10.18, 16.9, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    01.19, 16.7, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    01.16, 16.7, 0.6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1' tail in p.a. 218 deg);
nov 30.00, 16.1, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD);
    29.14, 16.1, -- (G. van Buitenen, Dordrecht, NL (G06), 0.203-m Ritchey-Chretien + CCD);

C/2023 Q1 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
dec 18.79, 15.8, 0.7' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    10.14, 15.9, 0.8' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    08.77, 16.0, 0.4' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 1.2' tail in p.a. 295 deg);
    01.01, 14.7, 3.1' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.05° tail in p.a. 288 deg);
nov 30.90, 13.9, 4.8' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1.9' tail in p.a. 292 deg);
    30.22, 16.0, 0.3' (P. Dekelver, 0.3-m Newtonian + CCD);
    29.23, 16.1, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD; 1.1' tail in p.a. 290 deg);
    27.11, 16.1, 0.8' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);

C/2023 R1 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
dec 13.75, 18.0, 0.4' (T. Lehmann, Weimar, 0.3-m Newtonian + CCD);
nov 30.79, 17.6, 0.4' (T. Lehmann, Weimar, 0.3-m Newtonian + CCD);
    30.79, 17.0, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    29.88, 17.2, 0.7' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.4' tail in p.a. 90 deg);
    28.99, 16.6, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD);
    22.01, 16.4, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);

C/2023 T3 (Fuls)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
dec 10.24, 17.4, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    01.25, 16.5, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
nov 30.24, 16.5, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);

C/2023 X2 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
nov 27.98, 18.9, 0.38' (K. Hills, 0.5-m Newtonian + CCD);

C/2024 A1 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
dec 03.17, 17.6, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    01.12, 16.5, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
nov 27.15, 17.2, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);

C/2024 A2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
nov 30.57, 18.8, 0.3' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD);

C/2024 B1 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
dec 01.20, 14.0, 3.4' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1.2' tail in p.a. 351 deg);
nov 30.21, 13.3, 4.7' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.05° tail in p.a. 333 deg);

C/2024 E1 (Wierzchos)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
nov 30.74, 18.9, 0.3' (T. Lehmann, Weimar, 0.3-m Newtonian + CCD);

C/2024 G3 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
dec 21.36, 7.2, 1.5' (T. Lovejoy, 0.25-m Newtonian + CCD; 9' tail in p.a. 213 deg);
    20.36, 7.5, 1.3' (K. Yoshimoto, 0.25-m Newtonian + CCD; 6' tail in p.a. 215 deg);
    20.35, 7.2, 2.26' (N. James, 0.038-m Refractor + CCD; 15' tail in p.a. 212 deg);
    20.35, 7.4, 1.5' (T. Lovejoy, 0.25-m Newtonian + CCD; 11' tail in p.a. 212 deg);
    19.35, 7.6, 1.2' (T. Lovejoy, 0.25-m Newtonian + CCD; 6.5' tail in p.a. 206 deg);
    18.35, 7.8, 0.9' (T. Lovejoy, 0.25-m Newtonian + CCD; 8' tail in p.a. 208 deg);
    18.35, 7.7, 2.26' (N. James, 0.038-m Refractor + CCD; 8' tail in p.a. 212 deg);
    15.35, 8.1, 1.69' (N. James, 0.038-m Refractor + CCD; 7' tail in p.a. 208 deg);
    14.33, 8.2, 1.1' (M. Mašek, Malargue, 0.3-m Cassegrain reflector + CCD; 5.7' tail in p.a. 209 deg);
    14.32, 8.6, 1.1' (M. Mašek, Malargue, 0.3-m Cassegrain reflector + CCD; 5.1' tail in p.a. 208 deg);
    13.36, 8.4, 1.2' (T. Lovejoy, 0.038-m Camera lens + CCD; 4' tail in p.a. 203 deg);
    13.35, 8.1, 1.69' (N. James, 0.038-m Refractor + CCD; 8.1' tail in p.a. 205 deg);
    12.36, 8.5, 1' (T. Lovejoy, 0.038-m Camera lens + CCD; 3.5' tail in p.a. 206 deg);
    12.35, 8.4, 1.69' (N. James, 0.038-m Refractor + CCD; 6.6' tail in p.a. 201 deg);
    10.35, 8.5, 1.3' (T. Lovejoy, 0.038-m Camera lens + CCD; 5' tail in p.a. 204 deg);
    10.32, 9.0, 1.1' (M. Mašek, Malargue, 0.3-m Cassegrain reflector + CCD; 3.9' tail in p.a. 199 deg);
    10.32, 8.7, 1.1' (M. Mašek, Malargue, 0.3-m Cassegrain reflector + CCD; 4.2' tail in p.a. 200 deg);
    08.35, 8.9, 1.69' (N. James, 0.038-m Refractor + CCD);
    07.35, 8.9, 1.69' (N. James, 0.038-m Refractor + CCD);
    06.35, 9.1, 1.69' (N. James, 0.038-m Refractor + CCD);
    05.35, 9.3, 1.69' (N. James, 0.038-m Refractor + CCD);
    03.33, 9.9, 0.7' (M. Mašek, Malargue, 0.3-m Cassegrain reflector + CCD; 2' tail in p.a. 200 deg);
    03.33, 9.7, 0.7' (M. Mašek, Malargue, 0.3-m Cassegrain reflector + CCD; 2.7' tail in p.a. 194 deg);
    02.35, 9.7, 1' (T. Lovejoy, 0.038-m Camera lens + CCD; 1.7' tail in p.a. 187 deg);
    01.35, 9.8, 0.8' (T. Lovejoy, 0.038-m Camera lens + CCD; 1.6' tail in p.a. 185 deg);
nov 28.35, 10.0, 0.5' (M. Mattiazzo, 0.038-m Camera lens + CCD);

C/2024 J2 (Wierzchos)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
dec 01.74, 15.1, 2.1' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 2.3' tail in p.a. 7 deg);
nov 30.75, 16.1, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD);
    29.21, 16.8, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD);

C/2024 M1 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
dec 17.42, 14.7, 0.3' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD);
    10.90, 14.5, 0.2' (D. Heggie, Edinburgh, Scotland, 0.114-m Prime focus of a reflector + CCD);
    10.09, 13.9, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    08.67, 14.5, 0.3' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD);
    08.01, 14.4, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    05.54, 14.5, 0.3' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD);
    04.51, 14.0, 0.4' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 0.4' tail in p.a. 185 deg);
    03.94, 14.1, -- (T. Karhula, Virsbo, Sweden, 0.305-m Newtonian);
    02.85, 15.0, 0.2' (G. Pappa, Piemonte,Italy (remote control), 0.3-m Ritchey-Chretien + CCD);
    01.84, 15.0, -- (C. Harder, Jeersdorf f, 0.531-m Newtonian);
    01.52, 14.3, 0.4' (Y. Yamaguchi, 0.076-m Refractor + CCD);
    01.50, 14.4, 0.3' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD);
    01.09, 13.8, 1.7' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    01.01, 14.5, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
nov 30.95, 14.6, 0.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    30.94, 14.4, -- (C. Harder, Jeersdorf f, 0.531-m Newtonian);
    30.91, 14.8, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    30.52, 14.3, 0.3' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD);
    30.11, 14.2, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    30.00, 14.9, -- (C. Harder, nahe Wangersen, 0.531-m Newtonian);
    29.99, 15.3, 0.5' (W. Kutschera, 0.508-m Newtonian + CCD);
    29.13, 14.3, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD);
    28.94, 14.3, -- (G. van Buitenen, Dordrecht, NL (G06), 0.203-m Ritchey-Chretien + CCD);
    27.03, 14.6, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    25.04, 15.1, 0.9' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    22.96, 15.6, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    22.58, 15.1, 0.3' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD);
    21.57, 15.1, 0.4' (Y. Yamaguchi, 0.076-m Refractor + CCD);
    21.56, 15.3, 0.3' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD);

C/2024 N4 (Sarneczky)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
dec 01.03, 19.0, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
nov 24.05, 19.0, 0.38' (K. Hills, 0.5-m Newtonian + CCD);

3200 Phaethon
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
nov 30.51, 16.0, -- (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD);

P/2010 A3 (Hill)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
nov 22.51, 17.2, 0.4' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD);
    21.93, 18.2, 0.38' (K. Hills, 0.5-m Newtonian + CCD);

P/2023 S1
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
dec 08.74, 16.6, 0.3' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 2' tail in p.a. 300 deg);
    08.12, 17.3, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    01.05, 15.3, 1.9' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.07° tail in p.a. 294 deg);
nov 30.93, 15.7, 0.7' (P. Dekelver, 0.3-m Newtonian + CCD; 0.5' tail in p.a. 308 deg);
    29.25, 15.7, 0.7' (P. Dekelver, 0.3-m Newtonian + CCD; 1.4' tail in p.a. 299 deg);
    29.17, 17.4, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    25.08, 16.4, 0.5' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);