13P/Olbers
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 09.34, 16.7, 0.6' (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);
mar 26.19, 16.3, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);


29P/Schwassmann-Wachmann
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 22.85, 13.4, 4.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    21.86, 13.2, 5' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    21.81, 13.8, 1.7' (A. Pearce, Skygems Namibia Remote Observatory, 0.36-m Ritchey-Chretien + CCD);
    20.94, 12.7, 1.8' (W. Kutschera, 0.508-m Newtonian);
    20.60, 14.7, 1' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    19.91, 13.1, 5' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    19.86, 14.3, 2' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    18.57, 13.6, 2.1' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    17.71, 16.6, 3' (J. Xiong, Daocheng, China(remote,O40), 0.203-m Newtonian + CCD);
    17.59, 15.4, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    16.87, 13.7, 3.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    15.49, 15.8, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    14.84, 12.4, 2.7' (E. Bryssinck, 0.4-m Newtonian + CCD);
    14.48, 15.4, 0.9' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    12.83, 13.8, 3.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    12.48, 14.6, 1' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    11.84, 12.6, 2.5' (E. Bryssinck, 0.4-m Newtonian + CCD);
    09.89, 15.0, 1.4' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    08.89, 15.1, 0.4' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    07.89, 15.5, 0.4' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    06.90, 14.2, 3.1' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    05.49, 13.0, 1.9' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    04.93, 14.0, 2' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    04.84, 12.5, 4' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    04.83, 14.8, 0.77' (S. Shurpakov, 0.2-m Schmidt-Newtonian + CCD);
    04.58, 13.8, 1.2' (T. Thaluang, Akin Observatory, Rayong (MPC O51), 0.26-m Cassegrain reflector + CCD);
    03.89, 13.1, 2.1' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD);
    03.88, 11.1, 11' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    03.86, 11.5, 3.9' (E. Bryssinck, 0.4-m Newtonian + CCD);
    03.85, 13.7, 2.4' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    03.82, 12.8, 5' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    02.88, 12.7, 5' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    01.93, 12.7, 2.2' (W. Kutschera, 0.508-m Newtonian);
    01.86, 12.2, 0.7' (M. Paling, Appledorne Observatory, 0.123-m Refractor + CCD);
    01.85, 10.9, 5.7' (E. Bryssinck, 0.4-m Newtonian + CCD);
    01.54, 14.7, 0.7' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
mar 31.82, 11.6, 3.9' (E. Bryssinck, 0.4-m Newtonian + CCD);
    31.63, 14.2, 0.9' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    30.85, 10.9, 6' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain);
    30.50, 14.1, 0.9' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    29.92, 12.0, 5' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    29.84, 13.5, 1.8' (M. Paradowski, 0.15-m Newtonian + CCD);
    29.83, 11.4, 4.5' (E. Bryssinck, 0.4-m Newtonian + CCD);
    29.82, 14.2, 1.8' (M. Paradowski, 0.15-m Newtonian + CCD);
    29.03, 13.5, 1.88' (K. Hills, 0.5-m Newtonian + CCD);
    28.93, 12.2, 3.7' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    28.76, 15.5, 0.58' (S. Shurpakov, 0.41-m Newtonian + CCD; 1.7' tail in p.a. 38 deg);
    27.93, 11.3, 13' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    27.89, 11.7, 4.6' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    27.88, 12.4, 2.4' (W. Kutschera, 0.25-m Newtonian);
    27.87, 13.3, 1.5' (C. Harder, nahe Westerholz, 0.531-m Newtonian);
    27.85, 11.4, 4.4' (E. Bryssinck, 0.4-m Newtonian + CCD);
    27.82, 12.7, 5.8' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    26.90, 12.3, 2.82' (N. Quinn, 0.28-m Schmidt-Cassegrain + CCD);
    26.67, 12.9, 1.3' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    26.51, 11.7, 3.8' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD);
    26.05, 11.7, 4.9' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    25.85, 14.6, 0.6' (T. Sciezor, Cracow, 0.06-m Camera lens + CCD);
    25.85, 13.9, 1.6' (D. Heggie, Edinburgh, Scotland, 0.114-m Prime focus of a reflector + CCD);
    25.81, 12.0, 6.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 2.2' tail in p.a. 47 deg);
    25.63, 13.9, 0.8' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    24.95, 11.8, 4.3' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    24.91, 12.2, 2.07' (N. Quinn, 0.28-m Schmidt-Cassegrain + CCD);


30P/Reinmuth
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 19.90, 18.8, 0.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    05.99, 18.7, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


43P/Wolf-Harrington
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 28.81, 17.1, 0.24' (S. Shurpakov, 0.41-m Newtonian + CCD);
    27.81, 16.1, 1.2' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);


49P/Arend-Rigaux
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 22.81, 14.6, 3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    21.81, 14.2, 3.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    19.80, 15.7, 0.9' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    04.81, 13.7, 2.9' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
mar 31.44, 14.7, 1.3' (Y. Yamaguchi, 0.13-m Hyperboloid astro-camera + CCD);


65P/Gunn
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 31.74, 17.0, 0.3' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    30.76, 16.5, 0.3' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    26.75, 16.5, 0.2' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);


88P/Howell
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 20.61, 17.8, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    05.50, 17.7, 0.4' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    04.88, 18.3, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    03.95, 18.3, 0.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    03.53, 18.6, 0.3' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD);
    01.55, 17.5, 0.3' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
mar 31.64, 18.4, 0.3' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    27.07, 18.5, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);
    26.60, 17.7, 0.4' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);


195P/Hill
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 31.91, 17.8, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


234P/LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 05.17, 19.6, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


363P/Lemmon
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 27.23, 20.6, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);


472P/NEAT-LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 19.84, 16.9, 0.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    06.50, 16.9, 0.4' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
mar 31.53, 17.3, 0.3' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    27.89, 16.5, 1.2' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.6' tail in p.a. 340 deg);


487P/SidingSpring
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 19.87, 19.0, 0.19' (S. Shurpakov, 0.41-m Newtonian + CCD);


496P/Hill
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 22.82, 16.2, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    21.83, 15.7, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    19.90, 17.2, 0.34' (S. Shurpakov, 0.41-m Newtonian + CCD);
    19.85, 15.7, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    18.85, 16.1, -- (G. van Buitenen, Dordrecht, NL (G06), 0.203-m Ritchey-Chretien + CCD);
    17.67, 16.7, 0.4' (J. Xiong, Daocheng, China(remote,O40), 0.203-m Newtonian + CCD);
    16.84, 15.7, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    12.85, 16.1, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    04.88, 16.3, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    02.90, 16.5, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
mar 29.88, 14.3, 3' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    28.88, 16.8, 0.24' (S. Shurpakov, 0.41-m Newtonian + CCD);


497P/Spacewatch-PANSTARRS
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 09.04, 19.4, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);


499P/Catalina
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 19.90, 18.0, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 0.3' tail in p.a. 162 deg);


C/2014 UN271 (Bernardinelli-Bernstein)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 18.52, 15.3, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    16.49, 15.7, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    07.51, 15.8, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    02.51, 15.6, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    01.50, 15.8, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
mar 30.56, 16.0, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    26.55, 15.7, 0.7' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    25.52, 16.2, 0.5' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);


C/2017 K2 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 19.81, 17.6, 0.6' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    04.81, 16.8, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    03.83, 17.0, 0.6' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
mar 27.85, 15.4, 2.2' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    25.85, 17.0, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);


C/2019 U5 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 06.55, 16.5, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    05.52, 16.7, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    01.48, 16.6, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
mar 31.48, 16.7, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    26.53, 15.8, 0.7' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    25.50, 16.2, 0.5' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);


C/2020 K1 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 06.54, 17.8, 0.4' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    01.51, 17.3, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
mar 31.50, 17.0, 0.4' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);


C/2021 G2 (Atlas)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 23.00, 13.4, 1.4' (A. Pearce, Skygems Namibia Remote Observatory, 0.45-m Schmidt-Cassegrain + CCD; 19.9' tail in p.a. 237 deg);
    21.13, 13.3, 1' (W. Kutschera, 0.508-m Newtonian);
    20.69, 13.5, 1.4' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD; 7.7' tail in p.a. 237 deg);
    20.09, 13.1, 0.8' (W. Kutschera, 0.508-m Newtonian);
    20.05, 14.3, 2.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 7.6' tail in p.a. 242 deg);
    19.99, 15.5, 0.34' (S. Shurpakov, 0.41-m Newtonian + CCD);
    19.89, 14.8, 0.5' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    18.59, 13.8, 0.7' (Y. Yamaguchi, 0.13-m Hyperboloid astro-camera + CCD);
    17.87, 14.9, 0.3' (J. Xiong, Daocheng, China(remote,O40), 0.203-m Newtonian + CCD);
    13.08, 14.3, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    10.65, 14.0, 1.1' (A. Pearce, Nedlands, 0.05-m Refractor + CCD);
    07.74, 13.8, 1.3' (K. Harikae, 0.15-m Newtonian + CCD);
    07.15, 11.6, 2' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain);
    06.74, 13.8, 1.3' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD; 8.3' tail in p.a. 237 deg);
    06.27, 11.9, 1' (M. Goiato, 0.22-m Newtonian);
    04.98, 14.1, 1.4' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 2.5' tail in p.a. 237 deg);
    04.95, 14.0, 2.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 5.5' tail in p.a. 240 deg);
    04.74, 13.8, 1' (T. Thaluang, Akin Observatory, Rayong (MPC O51), 0.26-m Cassegrain reflector + CCD; 10.1' tail in p.a. 237 deg);
    04.07, 11.5, 2.2' (C. Harder, Jeersdorf f, 0.531-m Newtonian);
    03.06, 13.7, 1.7' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.15° tail in p.a. 239 deg);
    02.94, 14.2, 2.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 4.1' tail in p.a. 244 deg);
    02.14, 12.9, 1.1' (W. Kutschera, 0.508-m Newtonian);
    01.65, 13.7, 1.4' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD; 5.8' tail in p.a. 237 deg);
mar 31.68, 13.7, 1.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD; 7.7' tail in p.a. 238 deg);
    30.64, 14.0, 0.8' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    30.03, 13.5, 1.2' (M. Paradowski, 0.15-m Newtonian + CCD);
    30.01, 13.7, 1.2' (M. Paradowski, 0.15-m Newtonian + CCD);
    29.06, 15.7, 0.34' (S. Shurpakov, 0.41-m Newtonian + CCD);
    28.14, 13.9, 1.7' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.04° tail in p.a. 241 deg);
    28.06, 13.8, 1.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.2° tail in p.a. 237 deg);
    27.47, 13.5, 1.2' (M. Olason, Arizona, 0.05-m Refractor + CCD; 2.1' tail in p.a. 242 deg);
    26.66, 13.7, 1.2' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD; 4.1' tail in p.a. 242 deg);
    26.13, 13.8, 1.1' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    25.68, 14.1, 0.8' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);


C/2022 E2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 22.80, 14.9, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    21.80, 14.6, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    19.85, 15.3, 0.34' (S. Shurpakov, 0.41-m Newtonian + CCD);
    19.80, 15.2, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    16.81, 15.0, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    12.80, 15.3, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    04.80, 15.1, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 1.4' tail in p.a. 53 deg);
    03.82, 14.5, 1' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.12° tail in p.a. 63 deg);
    03.79, 15.2, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 2.4' tail in p.a. 51 deg);
mar 28.89, 16.3, 0.24' (S. Shurpakov, 0.41-m Newtonian + CCD; 2.6' tail in p.a. 54 deg);
    28.81, 14.2, 1.4' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.12° tail in p.a. 61 deg);
    27.81, 14.4, 1' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    26.82, 15.1, 1.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    25.83, 14.9, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 1.4' tail in p.a. 50 deg);


C/2022 QE78 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 22.83, 16.0, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    21.84, 16.3, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    19.83, 16.2, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    19.83, 15.6, 0.5' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 1.3' tail in p.a. 237 deg);
    18.47, 15.4, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    16.83, 16.0, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    12.81, 15.7, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    06.49, 15.6, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    04.91, 15.9, 0.4' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    03.82, 15.9, 0.2' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    03.80, 16.3, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    02.10, 16.2, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);
    01.82, 15.0, 0.6' (E. Bryssinck, 0.4-m Newtonian + CCD);
mar 31.52, 15.2, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    30.52, 15.3, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    28.86, 16.1, 0.29' (S. Shurpakov, 0.41-m Newtonian + CCD);
    28.82, 15.1, 0.38' (N. Quinn, 0.28-m Schmidt-Cassegrain + CCD);
    27.89, 15.7, 0.7' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 1.3' tail in p.a. 231 deg);
    27.82, 14.9, 0.5' (E. Bryssinck, 0.4-m Newtonian + CCD);
    26.49, 15.4, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    25.54, 15.3, 0.5' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);


C/2022 R6 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 18.54, 16.2, 0.4' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
mar 31.90, 17.0, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    31.58, 16.5, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    30.59, 16.3, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    26.52, 16.1, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    25.53, 15.8, 0.5' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);


C/2023 A3 (Tsuchinshan-ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 21.16, 13.3, 1.9' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    20.06, 14.3, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    13.07, 13.6, 2.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    09.31, 15.8, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);
    07.73, 13.9, 0.9' (K. Harikae, 0.15-m Newtonian + CCD);
    05.18, 11.5, 4.9' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    05.18, 12.3, 3.2' (K. Hills, 0.5-m Newtonian + CCD);
    05.08, 11.1, 7.3' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.77° tail in p.a. 86 deg);
    04.09, 14.7, 0.2' (C. Harder, Jeersdorf f, 0.531-m Newtonian);
    04.09, 11.3, 6.2' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.87° tail in p.a. 86 deg);
    04.08, 11.3, 4.6' (M. Lošťák, 0.2-m Newtonian + CCD);
    04.08, 12.3, 4.6' (M. Lošťák, 0.2-m Newtonian + CCD);
    03.82, 13.6, 1' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 1.8' tail in p.a. 280 deg);
mar 30.45, 13.3, 1.5' (M. Olason, Arizona, 0.05-m Refractor + CCD; 1.2' tail in p.a. 273 deg);
    29.03, 14.8, 0.29' (S. Shurpakov, 0.41-m Newtonian + CCD);
    28.13, 11.2, 6.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1.47° tail in p.a. 86 deg);
    26.17, 10.8, 6' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);


C/2023 C2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 21.17, 15.6, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    20.08, 15.0, 2.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);


C/2023 F3 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 20.64, 16.6, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    18.59, 16.8, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    01.59, 16.6, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
mar 31.61, 16.0, 0.7' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD; 0.8' tail in p.a. 101 deg);
    30.69, 16.4, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    26.59, 16.6, 0.4' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    25.64, 16.9, 0.5' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);


C/2023 H5 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 22.85, 16.8, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 1.9' tail in p.a. 180 deg);
    21.86, 16.9, 1.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 0.8' tail in p.a. 180 deg);
    21.05, 16.3, 0.4' (M. Mašek, Hodkovice n M., 0.2-m Newtonian + CCD);
    21.05, 16.2, 0.4' (M. Mašek, Hodkovice n M., 0.2-m Newtonian + CCD; 0.9' tail in p.a. 176 deg);
    19.95, 16.5, 0.29' (S. Shurpakov, 0.41-m Newtonian + CCD; 1' tail in p.a. 184 deg);
    19.86, 16.7, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 1.9' tail in p.a. 181 deg);
    17.77, 16.6, 0.3' (J. Xiong, Daocheng, China(remote,O40), 0.203-m Newtonian + CCD; 1" tail in p.a. 180 deg);
    16.86, 16.8, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 1.6' tail in p.a. 181 deg);
    12.84, 16.9, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 1.5' tail in p.a. 182 deg);
    08.86, 15.8, 0.5' (E. Bryssinck, 0.4-m Newtonian + CCD);
    04.97, 17.7, 0.4' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 1.7' tail in p.a. 189 deg);
    04.89, 16.4, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    04.83, 16.7, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 1.7' tail in p.a. 185 deg);
    03.94, 16.2, 0.4' (M. Lošťák, 0.2-m Newtonian + CCD);
    03.94, 17.2, 0.4' (M. Lošťák, 0.2-m Newtonian + CCD);
    03.90, 16.5, 0.39' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD; 2.6' tail in p.a. 188 deg);
    03.83, 17.1, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 1.5' tail in p.a. 184 deg);
    02.97, 16.3, 0.7' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.06° tail in p.a. 187 deg);
    02.91, 16.9, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 1.3' tail in p.a. 186 deg);
mar 29.99, 16.3, 0.7' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.06° tail in p.a. 190 deg);
    28.98, 17.5, 0.19' (S. Shurpakov, 0.41-m Newtonian + CCD; 1.5' tail in p.a. 185 deg);
    28.05, 16.4, 0.6' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.05° tail in p.a. 283 deg);
    28.00, 16.4, 0.6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 2.1' tail in p.a. 192 deg);
    27.89, 16.2, 0.3' (E. Bryssinck, 0.4-m Newtonian + CCD; 1.6' tail in p.a. 190 deg);
    27.86, 16.5, 0.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 1.4' tail in p.a. 189 deg);
    26.65, 16.3, 0.3' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 1.2' tail in p.a. 195 deg);
    25.89, 16.3, 0.4' (D. Heggie, Edinburgh, Scotland, 0.114-m Prime focus of a reflector + CCD; 0.8' tail in p.a. 193 deg);


C/2023 Q1 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 19.88, 17.7, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    17.74, 17.8, 0.3' (J. Xiong, Daocheng, China(remote,O40), 0.203-m Newtonian + CCD);
    04.85, 17.6, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    02.92, 17.1, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    02.88, 15.9, 2.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    01.01, 17.6, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
mar 29.94, 16.2, 1.6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1' tail in p.a. 297 deg);
    27.98, 16.5, 1.3' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 1.3' tail in p.a. 287 deg);
    27.94, 16.2, 1.7' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1.3' tail in p.a. 293 deg);
    27.88, 16.3, 0.5' (E. Bryssinck, 0.4-m Newtonian + CCD; 0.4' tail in p.a. 263 deg);
    26.06, 17.5, 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
apr 20.66, 15.4, 0.7' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    18.62, 16.0, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    01.61, 15.7, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD; 1.2' tail in p.a. 277 deg);
mar 31.67, 15.6, 0.9' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    30.66, 15.7, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    26.64, 15.6, 0.7' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    25.66, 15.8, 0.5' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);


C/2024 A1 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 21.84, 15.5, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    19.82, 15.2, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    18.48, 16.4, 0.4' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    16.82, 16.5, 0.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    06.52, 16.4, 0.4' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    03.81, 16.5, 0.4' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
mar 31.55, 16.3, 0.4' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    30.57, 16.5, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    28.85, 16.8, 0.6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    28.79, 16.6, 0.29' (S. Shurpakov, 0.41-m Newtonian + CCD);
    26.50, 16.2, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    25.84, 16.7, 0.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    25.57, 16.3, 0.4' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);


C/2024 B1 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 06.09, 17.2, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
mar 30.10, 16.4, 1' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    29.21, 17.0, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


C/2024 E1 (Wierzchos)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 22.86, 17.0, 0.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 0.3' tail in p.a. 295 deg);
    19.87, 17.5, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 0.3' tail in p.a. 294 deg);
    10.13, 16.9, 0.4' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD; 0.6' tail in p.a. 297 deg);
    09.14, 17.0, 0.2' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD; 0.8' tail in p.a. 285 deg);
    08.13, 17.3, 0.2' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD; 0.2' tail in p.a. 281 deg);
    07.08, 17.0, 0.3' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    06.07, 17.2, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    05.02, 17.3, 0.4' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.4' tail in p.a. 283 deg);
    04.03, 17.1, 0.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.5' tail in p.a. 297 deg);
    03.99, 16.6, 0.6' (M. Lošťák, 0.2-m Newtonian + CCD);
    03.99, 17.8, 0.5' (M. Lošťák, 0.2-m Newtonian + CCD);
    03.02, 17.1, 0.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.4' tail in p.a. 288 deg);
    02.93, 17.9, 0.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
mar 31.16, 17.1, 0.3' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD; 0.4' tail in p.a. 300 deg);
    30.05, 17.2, 0.4' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.4' tail in p.a. 296 deg);
    29.10, 18.0, 0.19' (S. Shurpakov, 0.41-m Newtonian + CCD);
    28.10, 17.2, 0.6' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.4' tail in p.a. 286 deg);
    28.10, 17.2, 0.4' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.4' tail in p.a. 300 deg);
    26.11, 17.3, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);


C/2024 L5 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 20.58, 15.2, 0.7' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD; 2.4' tail in p.a. 113 deg);
    18.89, 14.8, -- (G. van Buitenen, Dordrecht, NL (G06), 0.203-m Ritchey-Chretien + CCD);
    18.61, 15.5, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    17.76, 15.8, 0.7' (J. Xiong, Daocheng, China(remote,O40), 0.203-m Newtonian + CCD; 2" tail);
    17.57, 15.5, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    05.12, 15.5, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    02.64, 15.5, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    01.58, 15.2, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
mar 31.59, 15.1, 0.8' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD; 0.6' tail in p.a. 98 deg);
    30.65, 15.2, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    29.13, 15.7, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    27.49, 15.0, 0.4' (M. Olason, Arizona, 0.05-m Refractor + CCD);
    26.61, 15.1, 0.7' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    25.67, 15.0, 0.5' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);


C/2024 M1 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 29.01, 17.7, 0.19' (S. Shurpakov, 0.41-m Newtonian + CCD);
    27.85, 18.5, 0.4' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);


C/2024 N4 (Sarneczky)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 29.04, 18.6, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


C/2025 A6 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 27.89, 21.4, -- (J. Ryske, Y71 Makroskooppi, Fregenal de la Sierra, Spain, 0.3-m Ritchey-Chretien + CCD);


C/2025 F2 (SWAN)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 21.78, 9.3, 1.7' (O. Miyazaki, 0.32-m Newtonian);
    21.13, 9.2, 1.7' (V. Gonano, Udine, Italy, 20x80 Binoculars);
    20.78, 9.1, 4' (O. Miyazaki, 0.32-m Newtonian);
    20.11, 10.5, 4' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 7.6' tail in p.a. 312 deg);
    20.05, 10.6, 0.72' (S. Shurpakov, 0.41-m Newtonian + CCD; 4' tail in p.a. 316 deg);
    18.49, 9.8, 2.5' (M. Olason, Arizona, 0.05-m Refractor + CCD; 2' tail in p.a. 309 deg);
    18.17, 9.6, 2' (J. Chambó Bris, Valles, Valencia, Spain, 0.2-m Newtonian + CCD; 6' tail in p.a. 310 deg);
    18.12, [9.1, -- (M. Deconinck, Artignosc-sur-Verdon, Provence, France, 25x120 Binoculars);
    17.49, 9.6, 3' (M. Olason, Arizona, 0.05-m Refractor + CCD);
    16.49, 9.6, 3' (M. Olason, Arizona, 0.05-m Refractor + CCD);
    16.18, 8.6, 2' (J. Chambó Bris, Valles, Valencia, Spain, 0.2-m Newtonian + CCD; 30' tail in p.a. 311 deg);
    15.49, 9.4, 3' (M. Olason, Arizona, 0.05-m Refractor + CCD; 53' tail in p.a. 309 deg);
    14.13, 8.9, 2.26' (N. James, 0.051-m Refractor + CCD);
    13.49, 9.3, 3' (M. Olason, Arizona, 0.05-m Refractor + CCD);
    13.12, 8.9, 2' (V. Gonano, Udine, Italy, 20x80 Binoculars);
    13.11, 9.4, 5' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 0.5° tail in p.a. 306 deg);
    13.10, 8.9, 1.1' (T. Sciezor, Cracow, 0.06-m Camera lens + CCD; 25' tail in p.a. 314 deg);
    13.10, 9.2, 1.4' (T. Csorgei, 0.105-m Refractor; 4.2' tail in p.a. 313 deg);
    13.09, 8.3, 2' (C. Harder, Jeersdorf f, 0.252-m Newtonian);
    13.09, 8.5, 2' (P. Guzik, 25x100 Binoculars);
    13.09, 8.5, 1.5' (M. Kwinta, 15x70 Binoculars);
    12.49, 9.3, 3' (M. Olason, Arizona, 0.05-m Refractor + CCD);
    12.13, 9.6, 4.4' (P. Dekelver, 0.3-m Newtonian + CCD; 0.5° tail in p.a. 306 deg);
    11.97, 8.0, 3.2' (A. Novichonok, Chalna fields, Karelia, Russia, 0.029-m Camera lens + CCD; 0.8° tail in p.a. 305 deg);
    11.49, 8.9, 3' (M. Olason, Arizona, 0.05-m Refractor + CCD);
    11.15, 9.5, 2.5' (V. Gonano, Udine, Italy, 20x80 Binoculars);
    11.14, 9.6, 2.26' (N. James, 0.051-m Refractor + CCD);
    11.14, 9.7, 2.9' (P. Dekelver, 0.3-m Newtonian + CCD; 29.6' tail in p.a. 307 deg);
    10.49, 9.3, 3' (M. Olason, Arizona, 0.05-m Refractor + CCD);
    10.10, 8.5, 1.5' (J. Warell, Lindby (K60), 40x100 Binoculars);
    09.49, 9.3, 3' (M. Olason, Arizona, 0.05-m Refractor + CCD);
    09.17, 9.5, -- (W. Souza, Bern,Switzerland, 0.15-m Newtonian + CCD);
    09.15, 9.0, 2' (G. Pappa, Pedara,Sicily,Italy, 0.3-m Camera lens + CCD);
    09.15, 8.8, 7.3' (P. Dekelver, 0.3-m Newtonian + CCD; 28.2' tail in p.a. 306 deg);
    09.15, 8.3, 3' (V. Gonano, Udine, Italy, 20x80 Binoculars);
    09.14, 8.6, 3.01' (N. James, 0.051-m Refractor + CCD);
    08.99, 8.2, 2' (A. Novichonok, Chalna fields, Karelia, Russia, 0.08-m Refractor);
    08.79, 7.8, 3.7' (O. Miyazaki, 18x50 Binoculars);
    08.20, 8.1, 3.2' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    08.18, 7.8, 4.5' (J. Chambó Bris, Valles, Valencia, Spain, 0.2-m Newtonian + CCD; 1.25° tail in p.a. 300 deg);
    08.16, 8.5, 4' (C. Labordena, La Serratella, 11x80 Binoculars);
    08.16, 7.8, 2.9' (D. Swan, Newcastle upon Tyne, UK, 0.05-m Refractor + CCD);
    08.16, 8.7, 4' (C. Labordena, La Serratella, 0.2-m Schmidt-Cassegrain);
    08.15, 8.2, 3.4' (M. Collins, Everton, 0.254-m Schmidt-Cassegrain);
    08.14, 7.5, 4' (A. Scholten, Eerbeek, 0.2-m Newtonian);
    08.14, 7.5, 5' (A. Scholten, Eerbeek, 15x80 Binoculars);
    07.99, 7.7, 2' (A. Novichonok, Chalna fields, 0.08-m Refractor);
    07.91, 9.5, 3.3' (C. Guo, Daocheng Glacier Observatory, Daocheng county, Garze Tibetan autonomous prefecture, Sichuan Province, China, 0.279-m Cassegrain reflector + CCD; 1.2° tail in p.a. 296 deg);
    07.80, 8.5, 1.8' (O. Miyazaki, 0.32-m Newtonian);
    07.80, 8.8, -- (K. Imamura, Nakagawa, 0.05-m Refractor + CCD);
    07.79, 8.4, 3' (K. Harikae, 0.15-m Newtonian + CCD; 15' tail in p.a. 295 deg);
    07.18, 8.3, 4' (J. Chambó Bris, Valles, Valencia, Spain, 0.2-m Newtonian + CCD; 1° tail in p.a. 301 deg);
    07.18, 7.9, 4' (J. Gonzalez Suarez, 15x70 Binoculars);
    07.17, 8.3, 3' (V. Gonano, Udine, Italy, 20x80 Binoculars; 1.5° tail in p.a. 300 deg);
    07.17, 8.2, 3.5' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain; 0.3° tail in p.a. 290 deg);
    07.15, 8.1, 3.76' (N. James, 0.051-m Refractor + CCD);
    07.15, 7.7, 3' (A. Scholten, Eerbeek, 0.2-m Newtonian);
    07.14, 8.3, 3.8' (M. Collins, Everton, 0.254-m Schmidt-Cassegrain);
    07.13, 8.1, 6.3' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    07.11, 7.9, 3.5' (C. Harder, Jeersdorf f, 0.252-m Newtonian; 6' tail in p.a. 300 deg);
    07.00, 7.5, 5' (G. van Buitenen, Dordrecht, NL, 0.304-m Newtonian);
    06.49, 8.4, 3' (M. Olason, Arizona, 0.05-m Refractor + CCD; 47' tail in p.a. 301 deg);
    06.17, 9.6, 4' (C. Labordena, La Serratella, 0.2-m Schmidt-Cassegrain);
    06.15, 8.0, 3.76' (N. James, 0.051-m Refractor + CCD);
    06.13, 8.1, 5.2' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    06.10, 7.9, 3.5' (C. Harder, Görding/ DK, 0.197-m Newtonian);
    06.02, 8.1, 2.5' (A. Novichonok, Chalna fields, 0.08-m Refractor);
    05.19, 9.6, 2.1' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    05.18, 9.0, 2.9' (J. Chambó Bris, Valles, Valencia, Spain, 0.2-m Newtonian + CCD; 14' tail in p.a. 302 deg);
    05.16, 9.6, 2.26' (N. James, 0.051-m Refractor + CCD);
    05.15, 8.9, 2' (A. Scholten, Eerbeek, 0.2-m Newtonian);
    05.13, 9.6, 5.2' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.8° tail in p.a. 304 deg);
    05.13, 9.0, 2.5' (M. Meyer, 0.152-m Refractor);
    05.11, 9.0, 2.7' (C. Harder, Görding/ DK, 0.197-m Newtonian);
    04.81, 10.7, 1.1' (O. Miyazaki, 0.32-m Newtonian);
    04.13, 9.2, 2' (M. Meyer, 0.254-m Newtonian);
    04.13, 9.6, 5.3' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.61° tail in p.a. 299 deg);
    04.12, 9.1, 2.7' (U. Pilz, 0.32-m Newtonian);
    04.11, 9.6, 2.6' (C. Harder, Jeersdorf f, 0.531-m Newtonian);
    04.09, 9.4, 2' (P. Guzik, 25x100 Binoculars);
    03.83, 11.2, 0.5' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD);
    03.83, 10.7, 1.4' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD);
    03.83, 9.8, 2.2' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 35' tail in p.a. 295 deg);
    03.49, 10.0, 2' (M. Olason, Arizona, 0.05-m Refractor + CCD; 30' tail in p.a. 299 deg);
    03.14, 10.4, 3.9' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.26° tail in p.a. 302 deg);
    03.13, 9.5, 2.2' (C. Harder, Jeersdorf h, 0.252-m Newtonian);
mar 30.23, 12.0, 1' (M. Mattiazzo, Fregenal de la Sierra, Spain, 0.07-m Camera lens + CCD);


P/2010 H2 (Vales)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 02.05, 15.5, 0.6' (W. Kutschera, 0.508-m Newtonian);


P/2019 Y3 (Catalina)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 02.93, 16.7, 1' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1.3' tail in p.a. 146 deg);


P/2023 S1
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 22.84, 16.0, 2.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    19.86, 16.5, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    19.85, 15.6, 1.2' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    18.87, 16.0, -- (G. van Buitenen, Dordrecht, NL (G06), 0.203-m Ritchey-Chretien + CCD);
    16.85, 16.4, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    12.82, 17.0, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    05.48, 15.9, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    04.92, 16.8, 0.5' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    04.89, 16.0, 0.38' (N. Quinn, 0.28-m Schmidt-Cassegrain + CCD);
    04.82, 16.7, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    03.84, 15.7, 1.1' (M. Lošťák, 0.2-m Newtonian + CCD);
    03.84, 16.4, 0.9' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    03.84, 16.6, 1.1' (M. Lošťák, 0.2-m Newtonian + CCD);
    03.82, 16.5, 1.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    02.89, 16.8, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    02.83, 14.9, 2.8' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.06° tail in p.a. 304 deg);
    01.87, 16.2, 0.38' (N. Quinn, 0.28-m Schmidt-Cassegrain + CCD);
    01.02, 16.4, 0.56' (K. Hills, 0.5-m Newtonian + CCD);
mar 31.62, 15.9, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    30.48, 15.8, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    29.80, 15.6, 0.6' (E. Bryssinck, 0.4-m Newtonian + CCD);
    28.93, 17.0, 0.29' (S. Shurpakov, 0.41-m Newtonian + CCD);
    28.90, 16.3, 0.38' (N. Quinn, 0.28-m Schmidt-Cassegrain + CCD);
    27.89, 14.9, 2.7' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.05° tail in p.a. 303 deg);
    27.88, 17.1, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    26.92, 16.4, 0.38' (N. Quinn, 0.28-m Schmidt-Cassegrain + CCD);
    26.56, 15.7, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    26.49, 15.7, 0.8' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD);
    25.59, 15.7, 0.5' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);
    24.93, 15.8, 0.38' (N. Quinn, 0.28-m Schmidt-Cassegrain + CCD);


P/2025 A2 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 02.05, 20.6, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);


P/2025 C1 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 17.83, 18.5, 0.2' (J. Xiong, Daocheng, China(remote,O40), 0.203-m Newtonian + CCD);
    05.15, 18.2, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
mar 29.15, 18.2, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    26.09, 18.5, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);


P/2025 D3 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 27.16, 20.6, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);