13P/Olbers
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
may 03.11, 17.1, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
apr 30.66, 16.3, 0.25' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    30.16, 16.7, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    28.79, 17.0, 0.2' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD);
    27.10, 16.2, 0.6' (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
may 23.75, 12.3, 4.8' (A. Pearce, Skygems Namibia Remote Observatory, 0.45-m Schmidt-Cassegrain + CCD);
    22.88, 11.8, 1.5' (U. Pilz, 0.32-m Newtonian);
    21.45, 13.8, 1.3' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    20.47, 12.7, 1.2' (O. Miyazaki, 0.32-m Newtonian);
    20.45, 13.4, 1.3' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    19.89, 11.6, 7' (J. Chambó Bris, Valles, Valencia, Spain, 0.2-m Newtonian + CCD);
    19.88, 12.8, 3.8' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    17.90, 12.6, 5.8' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    16.91, 11.3, 8' (M. Mašek, CTA-N La Palma, 0.25-m Schmidt-Cassegrain + CCD);
    16.91, 10.7, 9.1' (M. Mašek, CTA-N La Palma, 0.25-m Schmidt-Cassegrain + CCD);
    16.91, 11.1, 6' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain);
    16.88, 12.5, 3.76' (K. Hills, 0.5-m Newtonian + CCD);
    16.85, 13.7, 1.6' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    15.96, 13.2, 2.44' (K. Hills, 0.5-m Newtonian + CCD);
    15.87, 13.4, 1' (E. Bryssinck, 0.4-m Newtonian + CCD);
    13.92, 13.3, 1.5' (K. Hills, 0.5-m Newtonian + CCD);
    13.86, 13.5, 0.6' (E. Bryssinck, 0.4-m Newtonian + CCD);
    12.88, 13.6, 3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    12.88, 14.1, 2' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    12.87, 13.2, 6.3' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    12.87, 14.8, 2.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    09.86, 15.8, 1.2' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    08.86, 14.1, 2.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    08.72, 13.1, 2.4' (A. Pearce, Skygems Namibia Remote Observatory, 0.45-m Schmidt-Cassegrain + CCD);
    06.72, 13.8, 0.8' (A. Pearce, Skygems Namibia Remote Observatory, 0.45-m Schmidt-Cassegrain + CCD);
    05.91, 15.5, 1' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    05.77, 13.7, 1.7' (A. Pearce, Skygems Namibia Remote Observatory, 0.45-m Schmidt-Cassegrain + CCD);
    03.72, 13.0, 1.8' (A. Pearce, Skygems Namibia Remote Observatory, 0.45-m Schmidt-Cassegrain + CCD);
    02.86, 13.9, 3.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    01.92, 14.1, 3.2' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    01.89, 13.5, 1.5' (M. Kwinta, Krzesławice, 0.5-m Newtonian);
    01.87, 11.2, 13' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    01.87, 11.4, 11' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    01.84, 15.4, 1' (C. Harder, Capricorn, Namibia, 0.5-m Klevtsov-Cassegrain);
apr 30.87, 13.0, 4.1' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    30.87, 13.7, 4.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    30.84, 15.4, 0.45' (C. Harder, Capricorn, Namibia, 0.5-m Newtonian);
    30.83, 12.4, 2.9' (A. Pearce, Skygems Namibia Remote Observatory, 0.45-m Schmidt-Cassegrain + CCD);
    30.47, 13.0, 1.4' (O. Miyazaki, 0.32-m Newtonian);
    30.46, 13.6, 1.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    29.95, 11.6, 9' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    29.91, 12.5, 4.4' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    29.90, 12.5, 4.51' (K. Hills, 0.5-m Newtonian + CCD);
    29.84, 13.5, 4.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    28.91, 11.3, 14' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    28.90, 12.9, 2.6' (A. Pearce, Skygems Namibia Remote Observatory, 0.45-m Schmidt-Cassegrain + CCD);
    28.88, 15.0, 1.5' (M. Mašek, Hodkovice n M., 0.2-m Newtonian + CCD);
    28.85, 13.4, 2.3' (M. Mašek, Hodkovice n M., 0.2-m Newtonian + CCD);
    28.83, 13.3, 5' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    28.82, 15.8, 0.4' (C. Harder, Capricorn, Namibia, 0.5-m Newtonian);
    27.93, 12.9, 3.9' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    27.90, 11.7, 6' (J. Chambó Bris, Valles, Valencia, Spain, 0.2-m Newtonian + CCD);
    27.90, 16.5, 0.38' (S. Shurpakov, 0.41-m Newtonian + CCD; 1' tail in p.a. 41 deg);
    27.89, 11.2, 7' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain);
    27.88, 11.2, 13' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    27.84, 13.3, 4.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    27.80, 16.0, 0.3' (C. Harder, Capricorn, Namibia, 0.5-m Newtonian);
    27.72, 13.6, 1.8' (A. Pearce, Skygems Namibia Remote Observatory, 0.45-m Schmidt-Cassegrain + CCD);
    26.94, 11.3, 15' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    26.94, 12.6, 0.7' (U. Pilz, 0.32-m Newtonian);
    26.93, 13.3, 3.2' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    26.89, 12.3, 7' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    26.89, 12.4, 3.6' (A. Pearce, Skygems Namibia Remote Observatory, 0.45-m Schmidt-Cassegrain + CCD);
    26.89, 13.9, 2.4' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    26.88, 13.2, 5' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    26.79, 15.7, 0.6' (C. Harder, Capricorn, Namibia, 0.5-m Newtonian);
    26.49, 12.6, 3' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD);
    24.93, 13.4, 2.82' (K. Hills, 0.5-m Newtonian + CCD);
    24.88, 12.5, 5.9' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    24.79, 16.0, 0.4' (C. Harder, Capricorn, Namibia, 0.5-m Newtonian);
    24.75, 13.6, 1.9' (A. Pearce, Skygems Namibia Remote Observatory, 0.45-m Schmidt-Cassegrain + CCD);


30P/Reinmuth
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
may 18.10, 18.8, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
apr 30.03, 18.7, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


47P/Ashbrook-Jackson
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
may 24.04, 17.5, 0.4' (A. Pearce, Skygems Namibia Remote Observatory, 0.45-m Schmidt-Cassegrain + CCD; 2.2' tail in p.a. 250 deg);


49P/Arend-Rigaux
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 29.82, 15.2, 1.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    28.81, 14.7, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    27.81, 14.8, 2.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    26.81, 15.0, 0.7' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);


65P/Gunn
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
may 07.07, 15.7, 0.9' (T. Lehmann, Hakos (remote), 0.45-m Newtonian + CCD; 0.9' tail in p.a. 286 deg);
    02.22, 16.4, 0.9' (T. Lehmann, Chile (remote), 0.25-m Newtonian + CCD);
apr 30.67, 16.5, 0.3' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);


88P/Howell
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
may 13.96, 18.3, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    01.96, 17.2, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
apr 30.47, 17.5, 0.4' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    29.88, 18.5, 0.4' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.2' tail in p.a. 110 deg);
    27.93, 18.5, 0.4' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.1' tail in p.a. 242 deg);


235P/LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 25.06, 19.0, -- (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 29.83, 17.2, 0.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    28.83, 16.5, 0.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);


496P/Hill
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
may 20.85, 16.0, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    12.84, 15.8, 1.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    09.88, 14.8, 2.7' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    08.85, 16.1, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    02.83, 16.3, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
apr 30.86, 16.1, 1.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    29.83, 15.6, 1.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    28.89, 15.2, 1.9' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    28.86, 14.8, 3.1' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 1.7' tail in p.a. 90 deg);
    28.84, 15.8, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    27.85, 17.0, 0.34' (S. Shurpakov, 0.41-m Newtonian + CCD);
    27.84, 16.0, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    26.85, 15.9, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);


C/2014 UN271 (Bernardinelli-Bernstein)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
may 03.74, 14.9, 2.1' (T. Lehmann, Hakos (remote), 0.45-m Newtonian + CCD);
apr 30.49, 14.5, 1.2' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);


C/2017 K2 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 28.85, 15.8, 1.1' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    28.82, 17.4, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    26.84, 17.3, 0.5' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);


C/2019 E3 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
may 24.11, 16.9, 0.8' (A. Pearce, Skygems Namibia Remote Observatory, 0.45-m Schmidt-Cassegrain + CCD);


C/2019 T4 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 29.06, 18.8, 0.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);


C/2020 V2 (ZTF)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
may 06.14, 15.9, 1.3' (T. Lehmann, Hakos (remote), 0.45-m Newtonian + CCD);
apr 30.76, 16.4, 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
may 22.01, 13.4, 1.4' (M. Mašek, CTA-N La Palma, 0.25-m Schmidt-Cassegrain + CCD; 2.9' tail in p.a. 233 deg);
    22.01, 13.7, 1.4' (M. Mašek, CTA-N La Palma, 0.25-m Schmidt-Cassegrain + CCD; 2.8' tail in p.a. 230 deg);
    21.68, 13.6, 1.3' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    20.93, 13.4, 2.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 8.2' tail in p.a. 235 deg);
    20.93, 13.2, 2.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 8.7' tail in p.a. 234 deg);
    20.93, 14.2, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 4.6' tail in p.a. 234 deg);
    20.92, 13.9, 2.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 8.6' tail in p.a. 236 deg);
    20.66, 13.7, 1.3' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    20.50, 13.4, 0.9' (O. Miyazaki, 0.32-m Newtonian);
    19.99, 13.5, 0.8' (W. Kutschera, 0.508-m Newtonian);
    19.97, 13.6, 2.2' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.23° tail in p.a. 237 deg);
    19.93, 13.5, 0.5' (W. Hasubick, 0.44-m Newtonian);
    19.68, 13.3, 1.7' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD; 1.7' tail in p.a. 226 deg);
    18.12, 13.3, 1.13' (K. Hills, 0.5-m Newtonian + CCD);
    16.96, 13.2, 1.3' (M. Mašek, CTA-N La Palma, 0.25-m Schmidt-Cassegrain + CCD; 6.3' tail in p.a. 236 deg);
    16.96, 13.8, 1.1' (M. Mašek, CTA-N La Palma, 0.25-m Schmidt-Cassegrain + CCD; 5.8' tail in p.a. 233 deg);
    16.94, 11.7, 2.5' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain);
    15.99, 13.2, 1' (W. Kutschera, 0.508-m Newtonian);
    10.40, 13.5, 1.9' (T. Lehmann, Chile (remote), 0.25-m Newtonian + CCD; 0.19° tail in p.a. 238 deg);
    09.98, 13.5, 1.6' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.19° tail in p.a. 237 deg);
    09.94, 13.5, 1.8' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.19° tail in p.a. 235 deg);
    08.86, 14.0, 2.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    08.12, 13.5, 1.7' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.19° tail in p.a. 236 deg);
    08.08, 13.1, 1.1' (C. Harder, Capricorn, Namibia, 0.5-m Newtonian);
    07.58, 13.9, 0.9' (Y. Yamaguchi, 0.13-m Hyperboloid astro-camera + CCD);
    07.07, 13.4, 1.4' (C. Harder, Capricorn, Namibia, 0.5-m Newtonian);
    06.67, 13.5, 1.1' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    06.09, 13.4, 2' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.2° tail in p.a. 237 deg);
    06.02, 13.4, 2.2' (C. Harder, Capricorn, Namibia, 0.5-m Newtonian);
    05.10, 13.5, 1.7' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.16° tail in p.a. 238 deg);
    05.00, 13.1, 1' (C. Harder, Capricorn, Namibia, 0.5-m Newtonian);
    04.26, 13.6, 1.9' (T. Lehmann, Chile (remote), 0.25-m Newtonian + CCD; 0.23° tail in p.a. 238 deg);
    04.07, 13.5, 1.9' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.2° tail in p.a. 239 deg);
    03.95, 13.7, 1' (C. Harder, Capricorn, Namibia, 0.5-m Newtonian);
    03.92, 14.0, 0.53' (S. Shurpakov, 0.41-m Newtonian + CCD; 1.7' tail in p.a. 236 deg);
    03.24, 13.5, 1.8' (T. Lehmann, Chile (remote), 0.25-m Newtonian + CCD; 0.28° tail in p.a. 238 deg);
    02.92, 13.0, 1.3' (C. Harder, Capricorn, Namibia, 0.5-m Newtonian);
    02.87, 14.1, 3.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 9.5' tail in p.a. 237 deg);
    02.34, 13.3, 1.3' (M. Olason, Arizona, 0.05-m Refractor + CCD);
    02.21, 13.6, 2' (T. Lehmann, Chile (remote), 0.25-m Newtonian + CCD; 0.26° tail in p.a. 238 deg);
    02.08, 13.6, 2.7' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.16° tail in p.a. 238 deg);
    02.01, 13.5, 1.7' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.22° tail in p.a. 238 deg);
    01.93, 13.0, 1.3' (C. Harder, Capricorn, Namibia, 0.5-m Newtonian);
    01.00, 14.0, 3.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 9' tail in p.a. 238 deg);
apr 30.71, 13.6, 1.2' (K. Harikae, 0.15-m Newtonian + CCD);
    30.66, 13.6, 0.9' (A. Pearce, Nedlands, 0.05-m Refractor + CCD);
    30.60, 13.7, 1' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD; 5.7' tail in p.a. 235 deg);
    30.04, 13.3, 1.13' (K. Hills, 0.5-m Newtonian + CCD);
    30.03, 13.6, 2.5' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.21° tail in p.a. 237 deg);
    30.00, 13.1, 1.1' (C. Harder, Capricorn, Namibia, 0.5-m Newtonian);
    29.89, 14.1, 2.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 7.3' tail in p.a. 238 deg);
    29.75, 13.2, 1.2' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD; 1.5' tail in p.a. 243 deg);
    29.71, 13.4, 1.4' (K. Harikae, 0.15-m Newtonian + CCD);
    29.08, 13.6, 2.5' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.25° tail in p.a. 237 deg);
    29.06, 14.1, 3.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 9.7' tail in p.a. 236 deg);
    29.00, 13.3, 1.4' (M. Mašek, Hodkovice n M., 0.2-m Newtonian + CCD; 1.5' tail in p.a. 228 deg);
    28.98, 13.9, 1.1' (M. Mašek, Hodkovice n M., 0.2-m Newtonian + CCD; 0.5' tail in p.a. 215 deg);
    28.98, 13.5, 1.6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.22° tail in p.a. 238 deg);
    28.89, 13.1, 1.1' (C. Harder, Capricorn, Namibia, 0.5-m Newtonian);
    28.83, 13.5, 1.1' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    28.26, 15.1, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);
    28.00, 13.2, 1.8' (M. Lošťák, 0.2-m Newtonian + CCD);
    28.00, 14.2, 2.2' (M. Lošťák, 0.2-m Newtonian + CCD);
    27.99, 14.9, 0.62' (S. Shurpakov, 0.41-m Newtonian + CCD);
    27.88, 13.2, 1.1' (C. Harder, Capricorn, Namibia, 0.5-m Newtonian);
    27.83, 13.8, 1.1' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD; 0.9' tail in p.a. 233 deg);
    27.10, 13.5, 0.8' (W. Kutschera, 0.508-m Newtonian);
    27.06, 13.6, 2.7' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.17° tail in p.a. 236 deg);
    26.98, 13.6, 1.7' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.28° tail in p.a. 238 deg);
    26.95, 13.1, 1' (U. Pilz, 0.32-m Newtonian);
    26.92, 14.1, 1.4' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 4.5' tail in p.a. 238 deg);
    26.90, 14.2, 3.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 7.6' tail in p.a. 235 deg);
    26.84, 13.8, 1.1' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD; 1.1' tail in p.a. 229 deg);
    26.82, 13.4, 1.2' (C. Harder, Capricorn, Namibia, 0.5-m Newtonian);
    26.70, 13.6, 1.1' (K. Harikae, 0.15-m Newtonian + CCD);
    25.88, 14.0, 0.8' (C. Harder, Capricorn, Namibia, 0.5-m Newtonian);
    25.85, 13.7, 1.1' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD);
    25.63, 13.6, 1.2' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 9' tail in p.a. 240 deg);
    25.62, 13.5, 1.4' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD; 7.9' tail in p.a. 235 deg);
    25.11, 13.4, 1.6' (M. Mašek, CTA-N La Palma, 0.25-m Schmidt-Cassegrain + CCD; 2.6' tail in p.a. 235 deg);
    24.84, 13.7, 1.2' (A. Pearce, Nedlands, Perth, 0.05-m Refractor + CCD; 1' tail in p.a. 242 deg);


C/2021 S3 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
may 16.20, 18.1, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


C/2022 E2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 27.80, 15.2, 0.38' (S. Shurpakov, 0.41-m Newtonian + CCD);
    26.86, 14.4, 1.4' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.12° tail in p.a. 65 deg);


C/2022 QE78 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
may 12.83, 16.4, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    08.85, 15.8, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    02.81, 16.2, 1.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
apr 30.85, 16.1, 1.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    30.79, 15.1, 1.1' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 1.2' tail in p.a. 229 deg);
    29.82, 16.2, 1.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    27.86, 15.6, 0.28' (S. Shurpakov, 0.41-m Newtonian + CCD);
    27.82, 16.3, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    26.86, 15.9, 1.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    26.86, 15.2, 1.1' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 2.1' tail in p.a. 229 deg);
    24.90, 15.3, 0.6' (M. Mašek, CTA-N La Palma, 0.25-m Schmidt-Cassegrain + CCD; 0.4' tail in p.a. 242 deg);


C/2022 R6 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 30.51, 16.4, 0.4' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);


C/2023 A3 (Tsuchinshan-ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
may 22.08, 15.0, 0.6' (M. Mašek, CTA-N La Palma, 0.25-m Schmidt-Cassegrain + CCD);
    22.08, 15.5, 0.6' (M. Mašek, CTA-N La Palma, 0.25-m Schmidt-Cassegrain + CCD);
    20.89, 14.3, 2.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    20.11, 11.9, 1.1' (W. Kutschera, 0.508-m Newtonian);
    20.05, 14.2, 1.6' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.05° tail in p.a. 201 deg);
    16.98, 11.0, 5' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain);
    16.07, 14.6, 1' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    13.02, 12.8, 3.9' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 2.4' tail in p.a. 221 deg);
    10.05, 11.5, 9.7' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    08.19, 15.7, 0.5' (M. Mašek, CTA-N La Palma, 0.25-m Schmidt-Cassegrain + CCD; 0.2' tail in p.a. 271 deg);
    08.19, 15.2, 0.5' (M. Mašek, CTA-N La Palma, 0.25-m Schmidt-Cassegrain + CCD; 0.3' tail in p.a. 265 deg);
    04.71, 14.1, 0.9' (K. Harikae, 0.15-m Newtonian + CCD);
    02.14, 11.8, 1.2' (W. Kutschera, 0.508-m Newtonian);
apr 30.99, 14.9, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    30.72, 14.5, 0.8' (K. Harikae, 0.15-m Newtonian + CCD);
    29.71, 14.3, 0.6' (K. Harikae, 0.15-m Newtonian + CCD);
    29.07, 14.8, 2.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    28.06, 14.3, 1.8' (M. Lošťák, 0.2-m Newtonian + CCD);
    28.06, 14.8, 1.8' (M. Lošťák, 0.2-m Newtonian + CCD);
    28.03, 16.0, 0.29' (S. Shurpakov, 0.41-m Newtonian + CCD);
    27.09, 11.9, 5.5' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.04° tail in p.a. 242 deg);
    27.08, 11.5, 7.4' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    27.08, 14.1, 1.7' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    26.70, 14.0, 0.7' (K. Harikae, 0.15-m Newtonian + CCD);
    26.08, 15.2, 0.5' (C. Harder, Capricorn, Namibia, 0.5-m Newtonian);
    25.17, 14.4, 0.8' (M. Mašek, CTA-N La Palma, 0.25-m Schmidt-Cassegrain + CCD; 0.5' tail in p.a. 255 deg);
    25.17, 15.2, 0.6' (M. Mašek, CTA-N La Palma, 0.25-m Schmidt-Cassegrain + CCD; 0.4' tail in p.a. 255 deg);
    25.10, 14.7, 0.7' (A. Pearce, Tecnosky Astropark, Felizzano, 0.3-m Ritchey-Chretien + CCD);


C/2023 C2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
may 14.18, 15.8, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    11.06, 14.2, 2.6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1.7' tail in p.a. 235 deg);
apr 30.21, 15.7, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    29.08, 14.5, 1.9' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.06° tail in p.a. 226 deg);
    29.07, 15.2, 2.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 1.7' tail in p.a. 237 deg);


C/2023 F3 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 30.54, 16.6, 0.4' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    25.68, 16.7, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);


C/2023 H5 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
may 22.92, 16.2, 0.4' (M. Mašek, CTA-N La Palma, 0.25-m Schmidt-Cassegrain + CCD; 0.4' tail in p.a. 169 deg);
    22.92, 16.6, 0.4' (M. Mašek, CTA-N La Palma, 0.25-m Schmidt-Cassegrain + CCD; 0.4' tail in p.a. 162 deg);
    21.96, 16.9, 0.4' (M. Mašek, CTA-N La Palma, 0.25-m Schmidt-Cassegrain + CCD; 0.4' tail in p.a. 175 deg);
    20.91, 16.2, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 1.9' tail in p.a. 171 deg);
    20.91, 15.9, 1.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 1.7' tail in p.a. 170 deg);
    20.90, 17.1, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 2.6' tail in p.a. 171 deg);
    20.90, 17.1, 0.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 1' tail in p.a. 169 deg);
    19.93, 16.5, 0.9' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 2' tail in p.a. 173 deg);
    16.87, 15.1, 0.5' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    12.92, 16.6, 0.7' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 1.7' tail in p.a. 173 deg);
    12.90, 15.7, 1.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 1.6' tail in p.a. 167 deg);
    12.90, 16.0, 1.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 2' tail in p.a. 162 deg);
    12.89, 17.0, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 1.3' tail in p.a. 169 deg);
    12.89, 16.8, 0.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 0.8' tail in p.a. 171 deg);
    11.99, 16.6, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    10.91, 16.5, 0.6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 2.1' tail in p.a. 173 deg);
    09.88, 16.9, 0.8' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 0.5' tail in p.a. 177 deg);
    08.87, 16.7, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 1.3' tail in p.a. 172 deg);
    03.97, 16.8, 0.24' (S. Shurpakov, 0.41-m Newtonian + CCD);
    02.84, 16.6, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 2' tail in p.a. 177 deg);
    01.98, 16.6, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    01.96, 16.5, 0.6' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 1.8' tail in p.a. 175 deg);
    01.92, 16.5, 0.6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 2.3' tail in p.a. 177 deg);
apr 30.88, 16.5, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 1.2' tail in p.a. 171 deg);
    29.94, 16.4, 0.6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.05° tail in p.a. 177 deg);
    29.89, 16.1, 1.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 0.7' tail in p.a. 175 deg);
    29.01, 16.4, 0.9' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 2.2' tail in p.a. 178 deg);
    28.93, 16.0, 0.5' (M. Mašek, Hodkovice n M., 0.2-m Newtonian + CCD; 0.4' tail in p.a. 160 deg);
    28.91, 16.4, 0.4' (M. Mašek, Hodkovice n M., 0.2-m Newtonian + CCD; 0.4' tail in p.a. 162 deg);
    28.87, 16.2, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 2.1' tail in p.a. 175 deg);
    27.98, 16.3, 0.6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 2.3' tail in p.a. 176 deg);
    27.95, 16.8, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    27.90, 17.0, 0.8' (M. Lošťák, 0.2-m Newtonian + CCD);
    27.90, 16.3, 0.6' (M. Lošťák, 0.2-m Newtonian + CCD);
    27.85, 16.7, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 2.1' tail in p.a. 176 deg);
    26.98, 16.4, 0.9' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 2.4' tail in p.a. 181 deg);
    26.84, 16.8, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 2.2' tail in p.a. 177 deg);
    25.01, 16.5, 0.4' (M. Mašek, CTA-N La Palma, 0.25-m Schmidt-Cassegrain + CCD; 0.4' tail in p.a. 179 deg);


C/2023 Q1 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
may 15.98, 18.4, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    11.98, 18.2, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
apr 28.95, 17.2, 0.9' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.9' tail in p.a. 296 deg);
    28.93, 16.3, 1.9' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    26.93, 16.7, 1.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    26.93, 18.1, 0.4' (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):
2025
may 13.06, 16.4, 0.8' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    06.16, 16.7, 0.6' (T. Lehmann, Hakos (remote), 0.45-m Newtonian + CCD; 0.7' tail in p.a. 72 deg);
apr 30.08, 16.6, 0.6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);


C/2023 T3 (Fuls)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
may 07.06, 16.4, 0.15' (C. Harder, Capricorn, Namibia, 0.5-m Newtonian);
    06.01, 16.5, 0.15' (C. Harder, Capricorn, Namibia, 0.5-m Newtonian);
    04.97, 16.5, 0.15' (C. Harder, Capricorn, Namibia, 0.5-m Newtonian);
    03.93, 16.1, 0.15' (C. Harder, Capricorn, Namibia, 0.5-m Newtonian);
    02.90, 16.4, 0.15' (C. Harder, Capricorn, Namibia, 0.5-m Newtonian);
    01.85, , 0.15' (C. Harder, Capricorn, Namibia, 0.5-m Newtonian);
apr 30.85, 16.0, 0.25' (C. Harder, Capricorn, Namibia, 0.5-m Newtonian);
    28.83, 16.0, -- (C. Harder, Capricorn, Namibia, 0.5-m Newtonian);
    26.00, 16.0, 0.15' (C. Harder, Capricorn, Namibia, 0.5-m Newtonian);
    25.82, 16.2, 0.15' (C. Harder, Capricorn, Namibia, 0.5-m Newtonian);
    25.71, 15.3, 0.9' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    24.62, 15.5, 0.9' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);


C/2024 A1 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
may 08.74, 16.5, 0.7' (T. Lehmann, Hakos (remote), 0.45-m Newtonian + CCD);
apr 29.86, 16.7, 0.6' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    29.83, 16.1, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    26.90, 16.9, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);


C/2024 B1 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
may 06.99, 17.5, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
apr 30.07, 17.3, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    30.03, 15.9, 1.6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    28.03, 15.9, 1.7' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);


C/2024 E1 (Wierzchos)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
may 22.04, 16.2, 0.4' (M. Mašek, CTA-N La Palma, 0.25-m Schmidt-Cassegrain + CCD; 0.2' tail in p.a. 261 deg);
    22.04, 16.5, 0.4' (M. Mašek, CTA-N La Palma, 0.25-m Schmidt-Cassegrain + CCD);
    20.88, 16.2, 1.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 0.3' tail in p.a. 241 deg);
    20.88, 16.8, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 0.3' tail in p.a. 244 deg);
    20.01, 16.0, 0.9' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.5' tail in p.a. 240 deg);
    17.08, 16.4, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    12.97, 16.5, 0.9' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.6' tail in p.a. 258 deg);
    10.99, 16.5, 0.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.5' tail in p.a. 263 deg);
    09.99, 16.6, 0.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.4' tail in p.a. 256 deg);
    09.89, 16.9, 0.5' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    08.88, 16.8, 1.2' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 0.2' tail in p.a. 261 deg);
    07.94, 16.7, 0.3' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    05.93, 16.5, 0.2' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD; 0.3' tail in p.a. 266 deg);
    03.98, 16.6, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    02.07, 16.7, 0.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.3' tail in p.a. 267 deg);
    01.99, 16.8, 0.7' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.4' tail in p.a. 270 deg);
    01.95, 16.9, 0.2' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD; 0.5' tail in p.a. 277 deg);
apr 30.89, 17.1, 1.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 0.3' tail in p.a. 272 deg);
    29.99, 16.4, 1' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.5' tail in p.a. 257 deg);
    29.96, 17.2, 0.2' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD; 0.3' tail in p.a. 271 deg);
    29.05, 17.1, 0.4' (M. Mašek, Hodkovice n M., 0.2-m Newtonian + CCD);
    29.03, 16.6, 0.5' (M. Mašek, Hodkovice n M., 0.2-m Newtonian + CCD);
    29.02, 16.6, 0.6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.4' tail in p.a. 266 deg);
    28.88, 16.9, 1.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 0.4' tail in p.a. 274 deg);
    28.29, 16.8, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);
    28.08, 16.6, 0.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.3' tail in p.a. 267 deg);
    27.95, 17.0, 0.7' (M. Lošťák, 0.2-m Newtonian + CCD);
    27.95, 16.1, 0.7' (M. Lošťák, 0.2-m Newtonian + CCD);
    27.06, 16.9, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    27.03, 16.7, 0.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.4' tail in p.a. 267 deg);
    27.02, 16.7, 0.9' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.6' tail in p.a. 269 deg);
    26.92, 17.0, 0.2' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD; 0.3' tail in p.a. 277 deg);
    26.89, 17.2, 1.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 0.4' tail in p.a. 283 deg);
    25.61, 16.6, 0.3' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD);
    25.11, 17.0, 0.3' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD; 0.4' tail in p.a. 281 deg);
    25.03, 16.9, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


C/2024 G3 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
may 02.15, 13.4, 1.1' (C. Harder, Capricorn, Namibia, 0.5-m Newtonian);


C/2024 J3 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
may 07.13, 16.4, 0.6' (T. Lehmann, Hakos (remote), 0.45-m Newtonian + CCD; 1.7' tail in p.a. 211 deg);
    03.17, 16.7, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
apr 30.70, 16.2, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    25.19, 17.2, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


C/2024 L5 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
may 20.86, 16.4, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 0.8' tail in p.a. 116 deg);
    20.86, 16.8, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 0.9' tail in p.a. 109 deg);
    15.97, 16.4, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    12.87, 15.3, 1.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 0.4' tail in p.a. 106 deg);
    12.86, 16.5, 1.2' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 0.3' tail in p.a. 104 deg);
    12.86, 15.7, 1.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 0.5' tail in p.a. 106 deg);
    08.86, 16.3, 1.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    03.90, 16.5, 0.29' (S. Shurpakov, 0.41-m Newtonian + CCD);
    02.96, 16.2, -- (C. Harder, Capricorn, Namibia, 0.5-m Newtonian);
    02.85, 16.2, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 2.8' tail in p.a. 116 deg);
    01.96, 16.0, 0.2' (C. Harder, Capricorn, Namibia, 0.5-m Newtonian);
apr 30.90, 16.0, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 3.2' tail in p.a. 113 deg);
    30.56, 15.3, 0.7' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD; 2.5' tail in p.a. 114 deg);
    29.99, 16.0, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    29.91, 15.6, 1.4' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.05° tail in p.a. 117 deg);
    29.89, 15.7, 1.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 3.7' tail in p.a. 118 deg);
    28.85, 15.5, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD; 2.7' tail in p.a. 116 deg);
    27.93, 15.8, 0.29' (S. Shurpakov, 0.41-m Newtonian + CCD; 0.5' tail in p.a. 104 deg);
    26.98, 15.8, 0.2' (C. Harder, Capricorn, Namibia, 0.5-m Newtonian);
    25.98, 15.8, 0.4' (C. Harder, Capricorn, Namibia, 0.5-m Newtonian);
    25.69, 15.5, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    25.54, 15.6, 0.5' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 1' tail in p.a. 115 deg);
    25.06, 15.8, 0.6' (M. Mašek, CTA-N La Palma, 0.25-m Schmidt-Cassegrain + CCD; 0.6' tail in p.a. 118 deg);
    24.98, 16.2, 0.3' (C. Harder, Capricorn, Namibia, 0.5-m Newtonian);
    24.61, 15.4, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD; 1.4' tail in p.a. 116 deg);


C/2025 F2 (SWAN)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
may 02.14, 8.6, 4.8' (M. Olason, Arizona, 0.05-m Refractor + CCD);
    01.85, 10.7, 3.4' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.13° tail in p.a. 357 deg);
apr 29.13, 8.5, 4.8' (M. Olason, Arizona, 0.05-m Refractor + CCD; 9' tail in p.a. 349 deg);
    28.83, 10.4, 3.7' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.07° tail in p.a. 339 deg);
    27.86, 8.4, 2.5' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain);
    26.84, 9.8, 3' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.33° tail in p.a. 333 deg);
    26.83, 10.0, 2.9' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.1° tail in p.a. 330 deg);


C/2025 J1 (Borisov)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
may 05.00, 19.2, 0.2' (M. Mašek, CTA-N La Palma, 0.25-m Schmidt-Cassegrain + CCD);


P/2009 KF37
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 29.15, 20.7, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);


P/2010 H2 (Vales)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 30.94, 16.0, 0.3' (T. Sciezor, Cracow, 0.05-m Camera lens + CCD);


P/2010 LH155
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
apr 28.56, 17.8, 0.2' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD);
    25.11, 18.2, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);
    24.92, 18.4, 0.19' (J. Ryske, Y71 Makroskooppi, Fregenal de la Sierra, Spain, 0.3-m Ritchey-Chretien + CCD; 0.2' tail in p.a. 92 deg);


P/2023 S1
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
may 20.85, 17.4, 0.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    16.89, 17.6, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    16.84, 17.0, 0.7' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    12.85, 16.4, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    09.84, 16.9, 0.5' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    08.85, 16.8, 1' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    02.86, 16.1, 1.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
apr 30.87, 16.4, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    29.84, 16.9, 1.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    28.84, 16.8, 2' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    27.88, 17.4, 0.29' (S. Shurpakov, 0.41-m Newtonian + CCD);
    27.78, 16.3, -- (C. Harder, Capricorn, Namibia, 0.5-m Newtonian);
    26.90, 15.6, 2.6' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 2' tail in p.a. 308 deg);
    26.87, 16.5, 1.7' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    26.87, 16.0, 1' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    24.96, 16.9, 0.4' (M. Mašek, CTA-N La Palma, 0.25-m Schmidt-Cassegrain + CCD);


P/2025 C1 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
may 17.04, 18.6, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    02.03, 18.5, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
apr 27.96, 18.9, 0.19' (S. Shurpakov, 0.41-m Newtonian + CCD);