12P/Pons-Brooks
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 23.70, 18.1, 0.2' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    19.73, 17.9, 0.2' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);


13P/Olbers
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 24.48, 15.1, 0.4' (M. Olason, Arizona, 0.05-m Refractor + CCD);


29P/Schwassmann-Wachmann
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 22.94, 15.5, 0.34' (S. Shurpakov, 0.41-m Newtonian + CCD; 2.6' tail in p.a. 50 deg);
    22.85, 13.2, 2.8' (T. Sciezor, Cracow, 0.06-m Camera lens + CCD);
    22.82, 13.8, 1.5' (C. Harder, nahe Westerholz, 0.531-m Newtonian);
    22.79, 11.0, 5' (H. Kiiskinen, 0.4-m Ritchey-Chretien + CCD);
    22.50, 13.5, 1.2' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    21.87, 13.0, 3.4' (T. Sciezor, Cracow, 0.06-m Camera lens + CCD);
    21.85, 13.6, 1.6' (C. Harder, Reinsehlen, 0.531-m Newtonian);
    20.93, 15.7, 0.44' (S. Shurpakov, 0.2-m Schmidt-Newtonian + CCD);
    20.90, 13.5, 1.5' (T. Sciezor, Cracow, 0.06-m Camera lens + CCD);
    20.87, 13.5, 1.8' (D. Heggie, Edinburgh, Scotland, 0.114-m Prime focus of a reflector + CCD);
    20.78, 11.2, 8.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    20.64, 11.3, 3.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    20.46, 12.4, 2.2' (Y. Yamaguchi, 0.13-m Hyperboloid astro-camera + CCD);
    19.89, 13.5, 1.8' (D. Heggie, Edinburgh, Scotland, 0.114-m Prime focus of a reflector + CCD);
    19.87, 13.6, 2.2' (T. Sciezor, Cracow, 0.06-m Camera lens + CCD);
    19.87, 11.3, 6.4' (M. Lošťák, 0.2-m Newtonian + CCD);
    19.87, 12.2, 6.4' (M. Lošťák, 0.2-m Newtonian + CCD);
    19.86, 11.2, 4' (M. Uhlar, Dablice, 0.3-m Newtonian + CCD);
    19.84, 13.7, 1.5' (C. Harder, nahe Westerholz, 0.531-m Newtonian);
    19.57, 11.5, 3.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    18.89, 13.4, 2' (T. Sciezor, Cracow, 0.06-m Camera lens + CCD);
    18.88, 12.8, 2.4' (D. Heggie, Edinburgh, Scotland, 0.114-m Prime focus of a reflector + CCD);
    18.87, 12.1, 4.4' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    18.84, 13.1, 1.6' (C. Harder, Jeersdorf f, 0.531-m Newtonian);
    17.90, 12.7, 1.5' (G. Pappa, Piemonte,Italy (remote control), 0.14-m Refractor + CCD);
    17.90, 12.8, 2.9' (T. Sciezor, Cracow, 0.06-m Camera lens + CCD);
    17.89, 13.1, 1.7' (D. Heggie, Edinburgh, Scotland, 0.114-m Prime focus of a reflector + CCD);
    17.82, 13.2, 1.5' (C. Harder, Jeersdorf f, 0.531-m Newtonian);
    16.82, 10.5, 5' (H. Kiiskinen, 0.4-m Ritchey-Chretien + CCD);
    15.86, 16.5, 0.24' (S. Shurpakov, 0.41-m Newtonian + CCD; 0.9' tail in p.a. 23 deg);
    14.97, 12.1, 3.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    13.88, 12.4, 4.9' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    09.85, 10.9, 3.9' (E. Bryssinck, 0.4-m Newtonian + CCD);
    09.53, 12.4, 2.5' (T. Thaluang, Akin Observatory, Rayong (MPC O51), 0.26-m Cassegrain reflector + CCD);
    09.48, 11.6, 3.5' (Y. Yamaguchi, 0.13-m Hyperboloid astro-camera + CCD);
    08.88, 10.9, 7.3' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    07.84, 12.0, 2.4' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    06.93, 11.4, 4.7' (K. Hills, 0.5-m Newtonian + CCD);
    06.90, 11.6, 3.3' (T. Sciezor, Cracow, 0.06-m Camera lens + CCD);
    06.85, 12.5, 0.6' (J. Powichrowski, Knyszyn, 0.35-m Newtonian);
    06.55, 11.6, 4.2' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD);
    05.98, 11.1, 14' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    05.93, 11.4, 4.51' (K. Hills, 0.5-m Newtonian + CCD);
    05.90, 10.9, 4.6' (E. Bryssinck, 0.4-m Newtonian + CCD);
    05.87, 11.9, 3.5' (T. Sciezor, Cracow, 0.06-m Camera lens + CCD);
    04.99, 10.9, 6.39' (K. Hills, 0.5-m Newtonian + CCD);
    04.98, 10.7, 17' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    04.97, 12.1, 1.5' (A. Kammerer, Teufelsmuehle (Black Forest), Germany, 0.397-m Newtonian);
    04.94, 10.8, 12' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    04.92, 10.9, 4.6' (E. Bryssinck, 0.4-m Newtonian + CCD);
    04.91, 12.8, 1.5' (T. Sciezor, Cracow, 0.06-m Camera lens + CCD);
    04.88, 11.5, 3' (P. Guzik, 25x100 Binoculars);
    04.88, 12.1, 3.6' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    04.04, 11.2, 5.26' (K. Hills, 0.5-m Newtonian + CCD);
    03.98, 12.0, 3.6' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    03.95, 11.0, 7.8' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD; 70.1' tail in p.a. 128 deg);
    03.93, 10.9, 4.8' (E. Bryssinck, 0.4-m Newtonian + CCD);
    03.87, 12.1, 3.6' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 3.4' tail in p.a. 303 deg);
    03.51, 12.9, 0.9' (O. Miyazaki, 0.32-m Newtonian);
    02.98, 10.6, 17' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    02.96, 12.0, 7.3' (M. Lošťák, 0.2-m Newtonian + CCD);
    02.96, 10.9, 6.4' (M. Lošťák, 0.2-m Newtonian + CCD);
    02.92, 11.7, 2.5' (C. Harder, nahe Bult, 0.252-m Newtonian);
    02.03, 11.7, 4.9' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    01.99, 11.4, 4.1' (W. Kutschera, 0.25-m Newtonian);
    01.82, 10.5, 6' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain);
feb 28.96, 10.9, 6.58' (K. Hills, 0.5-m Newtonian + CCD);
    28.93, 11.3, 2.8' (C. Harder, Lild Strand (DK), 0.252-m Klevtsov-Cassegrain);
    28.88, 11.9, -- (F. Fremont, Niort, France, 0.073-m Refractor + CCD);
    28.85, 12.2, 2.5' (T. Sciezor, Cracow, 0.06-m Camera lens + CCD);
    28.85, 11.4, 3' (E. Bryssinck, 0.4-m Newtonian + CCD);
    28.77, 12.6, 1.8' (K. Harikae, 0.15-m Newtonian + CCD);
    28.64, 12.2, 1.9' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    28.01, 11.6, 2' (C. Harder, Lild Strand (DK), 0.252-m Newtonian);
    27.87, 11.1, 5.26' (K. Hills, 0.5-m Newtonian + CCD);
    26.92, +, -- (J. Linder, B50 Corner Observatory Durmersheim Germany, 0.05-m Camera lens + CCD);
    26.53, 12.0, 1.3' (O. Miyazaki, 0.32-m Newtonian);
    26.52, 11.3, 3.9' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD);
    26.50, 11.6, 2.3' (Y. Yamaguchi, 0.13-m Hyperboloid astro-camera + CCD);
    26.04, 12.4, 2.3' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    25.93, 11.3, 4.7' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    25.89, 11.3, 3.95' (K. Hills, 0.5-m Newtonian + CCD);
    25.88, 12.7, 0.8' (T. Sciezor, Cracow, 0.06-m Camera lens + CCD);
    25.82, 10.4, 6' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain);
    25.52, 12.8, 1.2' (O. Miyazaki, 0.32-m Newtonian);
    24.91, 11.3, 3.1' (E. Bryssinck, 0.4-m Newtonian + CCD);
    24.87, 11.7, 2.82' (K. Hills, 0.5-m Newtonian + CCD);
    24.76, 12.3, 1.5' (K. Harikae, 0.15-m Newtonian + CCD);
    24.56, 11.4, 3.4' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD);
    24.55, 12.2, 1.7' (O. Miyazaki, 0.32-m Newtonian);
    23.99, 10.5, 17' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    23.92, 11.9, 2.9' (D. Heggie, Edinburgh, Scotland, 0.114-m Prime focus of a reflector + CCD);
    23.84, 11.8, 1' (G. Pappa, Pedara,Sicily,Italy, 0.3-m Camera lens + CCD);
    22.98, 11.3, 5.3' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    22.89, 11.8, 1.2' (M. Kwinta, 0.3-m Newtonian);
    22.85, 12.3, 2.5' (D. Heggie, Edinburgh, Scotland, 0.114-m Prime focus of a reflector + CCD);
    22.83, 11.7, 3.6' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    22.82, 12.3, 1' (M. Filipek, 0.4-m Newtonian);


30P/Reinmuth
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 07.09, 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 18.80, 16.7, 0.39' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD);
    14.85, 17.2, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    03.79, 16.2, 0.4' (E. Bryssinck, 0.4-m Newtonian + CCD);
feb 25.84, 17.2, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    24.86, 16.1, 0.4' (E. Bryssinck, 0.4-m Newtonian + CCD);
    23.77, 15.9, 1.7' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.5' tail in p.a. 75 deg);


49P/Arend-Rigaux
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 21.76, 15.6, 0.8' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    04.78, 14.0, 1.7' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 1.6' tail in p.a. 73 deg);
    02.77, 13.3, 4.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1.3' tail in p.a. 73 deg);
feb 24.85, 15.6, 0.6' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    23.76, 14.7, 1.3' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);


65P/Gunn
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 28.73, 16.6, 0.6' (T. Lehmann, SSO (remote), 0.51-m Newtonian + CCD; 0.2' tail in p.a. 285 deg);


88P/Howell
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 22.52, 17.9, 0.4' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    20.51, 17.6, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    19.58, 18.2, 0.41' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
feb 28.64, 17.9, 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
feb 24.92, 17.9, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


215P/NEAT
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 04.21, 20.6, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);


242P/Spahr
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 18.77, 18.1, 0.31' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD);
feb 25.91, 18.0, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


268P/Bernardi
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 05.11, 19.7, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
feb 26.08, 19.8, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);


350P/McNaught
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 26.14, 21.2, -- (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
mar 19.51, 16.5, 0.4' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    05.85, 16.2, 1.1' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    04.90, 16.3, 1.1' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.5' tail in p.a. 347 deg);
    04.86, 16.0, 1.1' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.4' tail in p.a. 10 deg);
    03.89, 16.4, 0.4' (E. Bryssinck, 0.4-m Newtonian + CCD);
feb 26.00, 17.0, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    25.88, 16.7, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    23.90, 16.0, 1.3' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.6' tail in p.a. 340 deg);


476P/PANSTARRS
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 04.04, 20.4, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);


487P/SidingSpring
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 03.86, 18.7, 0.2' (E. Bryssinck, 0.4-m Newtonian + CCD; 0.1' tail in p.a. 144 deg);
feb 25.98, 18.0, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


496P/Hill
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 22.79, 16.2, 0.34' (S. Shurpakov, 0.41-m Newtonian + CCD);
    19.81, 15.1, 2' (M. Lošťák, 0.2-m Newtonian + CCD);
    19.81, 14.7, 1.5' (M. Lošťák, 0.2-m Newtonian + CCD);
    15.94, 16.0, 0.24' (S. Shurpakov, 0.41-m Newtonian + CCD);
    14.89, 15.2, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    03.84, 15.7, 0.4' (E. Bryssinck, 0.4-m Newtonian + CCD);
    02.86, 14.4, 2.7' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.5' tail in p.a. 91 deg);
feb 25.92, 16.3, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    25.86, 16.0, 0.6' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    24.87, 15.5, 0.6' (E. Bryssinck, 0.4-m Newtonian + CCD);


C/2014 UN271 (Bernardinelli-Bernstein)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 11.59, 15.8, 0.8' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    10.53, 15.3, 0.8' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);
    01.49, 15.1, 2.9' (T. Lehmann, SSO (remote), 0.51-m Newtonian + CCD);


C/2017 K2 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 21.83, 16.9, 0.5' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    20.81, 15.8, 0.43' (S. Shurpakov, 0.2-m Schmidt-Newtonian + CCD);
    18.83, 16.4, 0.8' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    07.85, 17.2, 0.6' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    04.86, 17.1, 0.8' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    04.78, 15.7, 1.6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    03.79, 17.4, 0.8' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 0.6' tail in p.a. 64 deg);
    02.88, 15.7, 1.3' (M. Lošťák, 0.2-m Newtonian + CCD);
    02.88, 15.8, 1.5' (M. Lošťák, 0.2-m Newtonian + CCD);
    02.86, 15.4, 3' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    01.88, 17.8, 0.4' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
feb 24.49, 16.5, 0.4' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 0.7' tail in p.a. 100 deg);
    23.86, 15.2, 2.4' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.8' tail in p.a. 109 deg);
    22.89, 15.7, 0.6' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    22.79, 17.5, 0.4' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);


C/2019 U5 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 23.57, 17.2, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    22.54, 16.1, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD; 0.6' tail in p.a. 111 deg);
    19.60, 16.7, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    11.52, 16.8, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    10.55, 16.6, 0.6' (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
mar 22.56, 17.3, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    20.59, 17.0, 0.31' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    19.55, 17.6, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    11.53, 16.1, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
feb 24.90, 17.2, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


C/2021 G2 (Atlas)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 23.69, 13.9, 0.9' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD; 4.4' tail in p.a. 244 deg);
    23.03, 15.2, 0.38' (S. Shurpakov, 0.41-m Newtonian + CCD);
    22.66, 13.6, 1.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD; 3.2' tail in p.a. 239 deg);
    22.04, 13.0, 1' (C. Harder, Reinsehlen, 0.531-m Newtonian);
    11.69, 14.1, 0.9' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD; 0.8' tail in p.a. 236 deg);
    10.45, 13.7, 1' (M. Olason, Arizona, 0.203-m Schmidt reflector + CCD);
    09.12, 15.2, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    06.18, 14.0, 2.5' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.09° tail in p.a. 239 deg);
    05.15, 14.0, 1.4' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.15° tail in p.a. 243 deg);
    03.18, 14.0, 1.7' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.11° tail in p.a. 241 deg);
    02.76, 14.1, 1.6' (T. Lehmann, SSO (remote), 0.51-m Newtonian + CCD; 0.14° tail in p.a. 239 deg);
    01.15, 14.5, 1' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 1.5' tail in p.a. 235 deg);
feb 28.71, 13.7, 0.8' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD; 1.9' tail in p.a. 249 deg);


C/2021 T4 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 03.96, 20.5, 0.2' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD);


C/2022 E2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 22.82, 14.3, 0.48' (S. Shurpakov, 0.41-m Newtonian + CCD; 5.3' tail in p.a. 63 deg);
    22.82, 14.8, 0.4' (C. Harder, nahe Westerholz, 0.531-m Newtonian);
    22.80, 14.4, 0.8' (H. Kiiskinen, 0.4-m Ritchey-Chretien + CCD; 2.7' tail in p.a. 64 deg);
    21.82, 15.2, 0.7' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 2.1' tail in p.a. 53 deg);
    20.85, 15.3, 1.3' (J. Koukal, Valasske Mezirici, 0.5-m Newtonian + CCD);
    19.82, 14.5, 0.4' (C. Harder, nahe Westerholz, 0.531-m Newtonian);
    18.81, 14.6, 1' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD; 7.7' tail in p.a. 63 deg);
    18.00, 14.7, 0.5' (C. Harder, Jeersdorf f, 0.531-m Newtonian);
    16.82, 14.2, 1' (H. Kiiskinen, 0.4-m Ritchey-Chretien + CCD; 1.2' tail in p.a. 55 deg);
    09.46, 14.1, 1.1' (Y. Yamaguchi, 0.13-m Hyperboloid astro-camera + CCD);
    08.79, 14.4, 1.2' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.12° tail in p.a. 62 deg);
    05.81, 14.3, -- (G. van Buitenen, Dordrecht, NL (G06), 0.203-m Ritchey-Chretien + CCD);
    04.82, 14.3, 1.5' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.12° tail in p.a. 63 deg);
    03.82, 14.4, 1.1' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 3.4' tail in p.a. 59 deg);
    02.83, 14.2, 1.4' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.13° tail in p.a. 63 deg);
    02.79, 15.1, 1.4' (M. Lošťák, 0.2-m Newtonian + CCD);
    02.79, 13.6, 1.6' (M. Lošťák, 0.2-m Newtonian + CCD);
    02.79, 14.2, -- (G. van Buitenen, Dordrecht, NL (G06), 0.203-m Ritchey-Chretien + CCD);
    01.90, 14.8, 0.6' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 2.3' tail in p.a. 53 deg);
feb 26.45, 14.2, 0.5' (Y. Yamaguchi, 0.13-m Hyperboloid astro-camera + CCD);
    23.80, 14.1, 1.4' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.15° tail in p.a. 63 deg);
    23.78, 14.2, 1.5' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.16° tail in p.a. 63 deg);
    22.85, 14.2, 0.8' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);


C/2022 QE78 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 22.89, 15.9, 0.34' (S. Shurpakov, 0.41-m Newtonian + CCD);
    21.84, 15.9, 0.6' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 0.5' tail in p.a. 229 deg);
    20.55, 14.8, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    19.49, 15.0, 0.7' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    15.91, 16.2, 0.24' (S. Shurpakov, 0.41-m Newtonian + CCD);
    14.93, 15.8, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    11.50, 15.6, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    10.50, 14.5, 0.7' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);
    09.55, 15.0, 0.6' (Y. Yamaguchi, 0.13-m Hyperboloid astro-camera + CCD);
    05.83, 14.8, -- (G. van Buitenen, Dordrecht, NL (G06), 0.203-m Ritchey-Chretien + CCD);
    05.01, 15.7, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    04.90, 15.3, 1.1' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.8' tail in p.a. 237 deg);
    04.86, 14.9, 1' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1.7' tail in p.a. 232 deg);
    03.88, 15.8, 0.6' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 0.5' tail in p.a. 256 deg);
    02.83, 14.9, 0.38' (N. Quinn, 0.28-m Schmidt-Cassegrain + CCD);
    01.83, 15.1, 0.38' (N. Quinn, 0.28-m Schmidt-Cassegrain + CCD);
feb 26.87, 14.8, 0.38' (N. Quinn, 0.28-m Schmidt-Cassegrain + CCD);
    26.01, 15.7, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    25.89, 15.0, 0.38' (N. Quinn, 0.28-m Schmidt-Cassegrain + CCD);
    24.89, 14.6, 0.6' (E. Bryssinck, 0.4-m Newtonian + CCD);
    22.94, 15.7, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    22.82, 16.5, 0.6' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);


C/2022 R6 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 23.61, 16.4, 0.3' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    22.60, 16.7, 0.4' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    20.62, 15.8, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    11.58, 16.3, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    10.61, 16.2, 0.41' (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
mar 23.06, 14.7, 0.43' (S. Shurpakov, 0.41-m Newtonian + CCD; 0.7' tail in p.a. 320 deg);
    16.07, 14.8, 0.34' (S. Shurpakov, 0.41-m Newtonian + CCD; 0.6' tail in p.a. 289 deg);
    08.86, 12.9, 1' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 1.8' tail in p.a. 310 deg);
    06.13, 10.8, 6.1' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1.5' tail in p.a. 335 deg);
    05.51, 11.9, 2' (M. Olason, Arizona, 0.05-m Refractor + CCD; 2' tail in p.a. 323 deg);
    05.18, 11.0, 5.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1.7' tail in p.a. 335 deg);
    05.18, 10.9, 7.1' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    03.34, 13.4, -- (W. Souza, Atibaia SP, 0.073-m Refractor + CCD);
    03.21, 12.9, -- (G. van Buitenen, Dordrecht, NL (G06), 0.203-m Ritchey-Chretien + CCD);
    03.14, 10.9, 5.8' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1.3' tail in p.a. 341 deg);
    01.18, 13.7, 1.1' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 2.2' tail in p.a. 309 deg);
feb 28.84, 12.1, 1.7' (K. Harikae, 0.15-m Newtonian + CCD);
    26.83, 12.0, 0.9' (O. Miyazaki, 0.32-m Newtonian);
    24.84, 11.8, 1.8' (K. Harikae, 0.15-m Newtonian + CCD);
    24.83, 12.0, 0.6' (O. Miyazaki, 0.32-m Newtonian);
    24.51, 10.7, 2' (M. Olason, Arizona, 0.05-m Refractor + CCD; 2' tail in p.a. 332 deg);
    23.26, 12.5, 1.9' (M. Mašek, CTA-N La Palma, 0.25-m Schmidt-Cassegrain + CCD; 1.9' tail in p.a. 333 deg);
    23.26, 11.7, 2.1' (M. Mašek, CTA-N La Palma, 0.25-m Schmidt-Cassegrain + CCD; 2.6' tail in p.a. 333 deg);


C/2023 F3 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 23.65, 16.5, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    22.65, 16.6, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD; 1' tail in p.a. 102 deg);
    20.67, 16.2, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    19.64, 16.4, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    11.64, 15.9, 0.7' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
feb 28.69, 16.7, 0.6' (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
mar 23.09, 17.4, 0.19' (S. Shurpakov, 0.41-m Newtonian + CCD; 2' tail in p.a. 199 deg);
    22.81, 16.1, 0.6' (H. Kiiskinen, 0.4-m Ritchey-Chretien + CCD; 1.3' tail in p.a. 194 deg);
    19.91, 17.4, 0.6' (M. Lošťák, 0.2-m Newtonian + CCD);
    19.91, 16.2, 0.4' (M. Lošťák, 0.2-m Newtonian + CCD);
    19.86, 15.9, 0.2' (C. Harder, nahe Westerholz, 0.531-m Newtonian);
    19.00, 16.5, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD; 5" tail in p.a. 190 deg);
    18.86, 15.9, 0.2' (C. Harder, Jeersdorf f, 0.531-m Newtonian);
    17.91, 16.0, 0.4' (G. Pappa, Piemonte,Italy (remote control), 0.14-m Refractor + CCD);
    17.83, 15.8, 0.25' (C. Harder, Jeersdorf f, 0.531-m Newtonian; 1' tail in p.a. 180 deg);
    08.75, 16.4, 0.24' (T. Thaluang, Akin Observatory, Rayong (MPC O51), 0.26-m Cassegrain reflector + CCD; 1.6' tail in p.a. 200 deg);
    07.02, 16.2, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    06.06, 16.1, 0.9' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.05° tail in p.a. 204 deg);
    05.07, 16.1, 0.9' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 2.4' tail in p.a. 204 deg);
    04.98, 16.2, 0.7' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.08° tail in p.a. 204 deg);
    03.11, 16.2, 0.8' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.05° tail in p.a. 203 deg);
    03.02, 16.2, 0.7' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.05° tail in p.a. 205 deg);
    03.01, 16.1, 0.4' (M. Lošťák, 0.2-m Newtonian + CCD);
    03.01, 17.0, 0.4' (M. Lošťák, 0.2-m Newtonian + CCD);
    01.17, 16.8, 0.6' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 2.6' tail in p.a. 208 deg);
feb 26.11, 16.3, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    25.96, 16.5, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    24.07, 16.2, 0.8' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.05° tail in p.a. 207 deg);
    22.94, 16.9, 0.6' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 1' tail in p.a. 203 deg);


C/2023 Q1 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 15.87, 16.4, 1' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 1.1' tail in p.a. 291 deg);
    14.95, 17.3, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    05.94, 16.1, 1.6' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 1.7' tail in p.a. 278 deg);
    05.88, 15.9, 1.6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 2.1' tail in p.a. 277 deg);
    05.07, 16.4, 0.56' (K. Hills, 0.5-m Newtonian + CCD);
    02.97, 15.3, 3.2' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1.3' tail in p.a. 271 deg);
    02.90, 15.8, 2' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 1.8' tail in p.a. 274 deg);
    02.00, 16.5, 0.6' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD; 1.1' tail in p.a. 269 deg);
feb 28.97, 16.6, 0.5' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD; 1.3' tail in p.a. 283 deg);
    26.90, 16.4, 0.6' (D. Heggie, Aldclune, Perthshire, UK, 0.05-m Refractor + CCD);
    26.09, 16.8, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    26.02, 16.8, 0.4' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    23.94, 15.2, 2.8' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 2.2' tail in p.a. 281 deg);
    22.96, 16.3, 0.6' (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
mar 23.66, 16.0, 0.4' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    22.64, 15.7, 0.4' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    20.69, 16.0, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    19.70, 15.7, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    11.63, 15.6, 0.7' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
feb 28.66, 15.7, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);


C/2023 X2 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 22.85, 18.5, 0.19' (S. Shurpakov, 0.41-m Newtonian + CCD);


C/2024 A1 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 22.57, 15.9, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    19.52, 16.2, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    18.89, 16.4, 0.6' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    14.91, 16.5, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    11.56, 15.6, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    10.58, 15.8, 0.41' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);
    07.80, 16.4, 0.6' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    04.86, 16.7, 0.5' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    04.82, 16.0, 1.1' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    03.84, 18.1, 0.3' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    02.83, 14.8, 0.4' (M. Lošťák, 0.2-m Newtonian + CCD);
    01.91, 16.3, 0.5' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
feb 25.01, 16.6, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    23.83, 15.8, 1.2' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.4' tail in p.a. 128 deg);
    22.92, 16.5, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    22.81, 16.0, 0.9' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);


C/2024 B1 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 09.18, 16.8, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    03.10, 15.7, 1.4' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    02.18, 15.1, 0.7' (W. Kutschera, 0.508-m Newtonian + CCD);


C/2024 E1 (Wierzchos)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 16.01, 17.7, 0.29' (S. Shurpakov, 0.41-m Newtonian + CCD);
    09.14, 17.5, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    06.10, 17.4, 0.8' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.4' tail in p.a. 317 deg);
    05.12, 17.5, 0.4' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.3' tail in p.a. 303 deg);
    03.15, 17.2, 0.5' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
feb 25.23, 17.5, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


C/2024 G3 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 23.96, 8.5, 2' (M. Goiato, 20x100 Binoculars);


C/2024 L5 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 23.67, 15.1, 0.7' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    23.01, 15.6, 0.29' (S. Shurpakov, 0.41-m Newtonian + CCD);
    22.62, 15.3, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    20.70, 15.1, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    19.68, 15.3, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    11.66, 15.3, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    05.22, 15.8, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
feb 25.17, 16.0, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


C/2024 M1 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 22.87, 17.5, 0.19' (S. Shurpakov, 0.41-m Newtonian + CCD);
    15.81, 19.6, 0.4' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    08.83, 17.8, 0.5' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    05.89, 18.2, 0.6' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    02.90, 17.9, 0.3' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    02.82, 18.4, 0.4' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
feb 23.84, 18.0, 0.5' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);


C/2024 N3 (Sarneczky)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 16.10, 18.5, 0.17' (S. Shurpakov, 0.41-m Newtonian + CCD);


C/2024 N4 (Sarneczky)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 05.06, 18.4, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
feb 26.06, 18.3, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


C/2025 A6 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 26.04, 20.8, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);


C/2025 D1 (Groeller)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 23.94, 20.0, 0.2' (J. Ryske, Y71 Makroskooppi, Fregenal de la Sierra, Spain, 0.3-m Ritchey-Chretien + CCD; 0.25' tail in p.a. 105 deg);


A/2025 A7
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 05.02, 20.1, 0.4' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    03.02, 19.0, 0.4' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);


P/2019 A8 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 22.97, 20.7, -- (J. Ryske, Y71 Makroskooppi, Fregenal de la Sierra, Spain, 0.3-m Ritchey-Chretien + CCD);


P/2019 Y3 (Catalina)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 21.80, 18.5, 0.4' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 0.3' tail in p.a. 80 deg);
    21.78, 17.8, 0.5' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 0.2' tail in p.a. 82 deg);
    17.92, 17.0, 0.3' (G. Pappa, Piemonte,Italy (remote control), 0.14-m Refractor + CCD);
    14.87, 17.5, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    02.80, 14.9, 2.8' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.6' tail in p.a. 92 deg);
    02.78, 14.9, 3.1' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 1.2' tail in p.a. 92 deg);
feb 22.87, 17.9, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);


P/2023 S1
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 23.62, 15.7, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    22.92, 16.6, 0.29' (S. Shurpakov, 0.41-m Newtonian + CCD);
    22.49, 15.9, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    20.91, 16.4, 0.44' (S. Shurpakov, 0.2-m Schmidt-Newtonian + CCD);
    20.49, 15.4, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    19.62, 15.0, 0.7' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    19.04, 17.1, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);
    18.84, 16.3, 1' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    18.56, 15.9, 0.43' (T. Thaluang, Akin Observatory, Rayong (MPC O51), 0.26-m Cassegrain reflector + CCD);
    17.88, 16.2, 0.38' (N. Quinn, 0.28-m Schmidt-Cassegrain + CCD);
    16.83, 15.3, 0.8' (H. Kiiskinen, 0.4-m Ritchey-Chretien + CCD);
    11.60, 14.5, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    07.83, 16.5, 0.7' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    06.91, 15.9, 0.7' (J. Ryske, Y71 Makroskooppi, Fregenal de la Sierra, Spain, 0.3-m Ritchey-Chretien + CCD; 5' tail in p.a. 295 deg);
    06.02, 14.7, 3.6' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 2.3' tail in p.a. 295 deg);
    05.85, 15.1, -- (G. van Buitenen, Dordrecht, NL (G06), 0.203-m Ritchey-Chretien + CCD);
    05.10, 15.8, 0.56' (K. Hills, 0.5-m Newtonian + CCD);
    04.94, 14.5, 3.4' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.05° tail in p.a. 297 deg);
    04.90, 14.2, 3.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.06° tail in p.a. 297 deg);
    02.94, 14.3, 3.1' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.05° tail in p.a. 298 deg);
    02.93, 15.5, 1.1' (M. Lošťák, 0.2-m Newtonian + CCD);
    02.93, 15.3, 2' (M. Lošťák, 0.2-m Newtonian + CCD);
    02.85, 15.4, 0.38' (N. Quinn, 0.28-m Schmidt-Cassegrain + CCD);
    01.95, 15.9, 0.38' (N. Quinn, 0.28-m Schmidt-Cassegrain + CCD);
feb 25.96, 15.6, 0.38' (N. Quinn, 0.28-m Schmidt-Cassegrain + CCD);
    24.03, 14.1, 4.1' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    23.91, 14.2, 3.1' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.14° tail in p.a. 301 deg);
    22.95, 15.0, 1.3' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);


P/2025 C1 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
mar 11.67, 18.8, 0.4' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    05.23, 18.2, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    05.15, 17.2, 1.3' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 1' tail in p.a. 282 deg);
feb 28.67, 17.2, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD; 0.5' tail in p.a. 309 deg);
    25.16, 17.9, 0.38' (K. Hills, 0.5-m Newtonian + CCD);