12P/Pons-Brooks
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 07.36, 17.2, 0.5' (T. Lehmann, Chile (remote), 0.25-m Newtonian + CCD);


29P/Schwassmann-Wachmann
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 20.88, 12.0, 1.6' (T. Sciezor, Cracow, 0.06-m Camera lens + CCD);
    20.59, 11.5, 2' (O. Miyazaki, 0.32-m Newtonian);
    19.95, 10.7, 5.5' (P. Dekelver, 0.3-m Newtonian + CCD);
    19.92, 11.8, 1.8' (T. Sciezor, Cracow, 0.06-m Camera lens + CCD);
    19.92, 10.8, 4.1' (E. Bryssinck, 0.4-m Newtonian + CCD);
    19.59, 11.6, 1.8' (O. Miyazaki, 0.32-m Newtonian);
    18.92, 12.5, 2.4' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    18.90, 10.0, 7' (E. Bryssinck, 0.4-m Newtonian + CCD);
    18.89, 10.5, 7.3' (P. Dekelver, 0.3-m Newtonian + CCD);
    18.83, 11.5, 1.5' (M. Meyer, 0.254-m Newtonian);
    18.80, 11.7, 2.7' (C. Harder, Jeersdorf f, 0.252-m Newtonian);
    18.59, 11.9, 1.6' (O. Miyazaki, 0.32-m Newtonian);
    17.97, 11.5, 4.8' (W. Kutschera, 0.508-m Newtonian);
    17.94, 11.7, 1.5' (T. Sciezor, Cracow, 0.06-m Camera lens + CCD);
    17.92, 10.2, 7' (E. Bryssinck, 0.4-m Newtonian + CCD);
    17.82, 11.2, 1.6' (M. Meyer, 0.254-m Newtonian);
    17.81, 11.7, 2.5' (C. Harder, Jeersdorf f, 0.531-m Newtonian);
    17.53, 11.7, 1.6' (O. Miyazaki, 0.32-m Newtonian);
    17.04, 10.8, 5.5' (P. Dekelver, 0.3-m Newtonian + CCD);
    16.90, 11.3, 4.3' (W. Kutschera, 0.25-m Newtonian);
    16.82, 11.4, 1.8' (M. Meyer, 0.254-m Newtonian);
    16.46, 11.6, 1' (O. Miyazaki, 0.32-m Newtonian);
    15.89, 11.6, -- (F. Fremont, Niort, 0.073-m Refractor + CCD);
    15.62, 12.1, 1.7' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    14.03, 11.6, 1.8' (P. Dekelver, 0.3-m Newtonian + CCD);
    11.55, 11.7, 1.7' (Y. Yamaguchi, 0.076-m Refractor + CCD);
    11.52, 11.6, 1.7' (Y. Yamaguchi, 0.076-m Refractor + CCD);
    09.27, 11.5, -- (W. Souza, Atibaia SP, 0.73-m Refractor + CCD);
    08.88, 12.4, 0.7' (T. Sciezor, Cracow, 0.093-m Camera lens + CCD);
    08.67, 11.6, 3.1' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD);
    07.78, 11.5, 3' (K. Harikae, 0.15-m Newtonian + CCD);
    07.70, 10.6, 4' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    06.90, 11.5, 4' (D. Heggie, Edinburgh, UK, 0.05-m Refractor + CCD);
    06.74, 11.9, 1.5' (O. Miyazaki, 0.32-m Newtonian);
    06.21, 12.1, 2.3' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    06.19, 10.8, 6.6' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    05.68, 11.7, 1.4' (O. Miyazaki, 0.32-m Newtonian);
    05.68, 11.0, 3' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    05.21, 10.2, 7.7' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    05.19, 11.3, 5.26' (K. Hills, 0.5-m Newtonian + CCD);
    05.06, 12.3, 0.5' (E. Banach, 0.25-m Newtonian);
    04.98, 13.4, 0.5' (B. Czeglédi, Hajdúszoboszló, Hungary, 0.3-m Newtonian);
    04.96, 12.2, 1.2' (G. Scheerle, 0.235-m Schmidt-Cassegrain);
    04.82, 10.6, 5.5' (P. Dekelver, 0.3-m Newtonian + CCD);
    04.79, 11.6, 2.5' (K. Harikae, 0.15-m Newtonian + CCD);
    04.67, 11.1, 2.9' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    04.64, 11.3, 1' (O. Miyazaki, 0.32-m Newtonian);
    04.52, 11.4, 3' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD);
    04.16, 10.7, 6.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    03.98, 11.0, 5.5' (P. Dekelver, 0.3-m Newtonian + CCD);
    03.96, 11.0, 9' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD);
    03.90, 12.1, 0.5' (E. Banach, 0.25-m Newtonian);
    03.80, 10.6, 4.5' (H. Kiiskinen, 0.4-m Ritchey-Chretien + CCD);
    03.61, 11.2, 2' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    03.03, 10.5, 7.3' (P. Dekelver, 0.3-m Newtonian + CCD);
    02.97, 12.1, 1' (T. Sciezor, Cracow, 0.06-m Camera lens + CCD);
    02.95, 11.3, 2.6' (E. Bryssinck, 0.4-m Newtonian + CCD);
    02.09, 10.9, 12' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    01.98, 11.6, 4.5' (W. Kutschera, 0.25-m Newtonian);
    01.62, 11.7, 3' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    01.12, 10.9, 7.1' (J. Chambó Bris, Valles, Valencia, Spain, 0.2-m Newtonian + CCD);
    01.09, 11.0, 11' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    01.05, 11.0, 5.5' (P. Dekelver, 0.3-m Newtonian + CCD);
jan 32.00, 12.5, 1' (T. Sciezor, Cracow, 0.06-m Camera lens + CCD);
    31.99, 11.6, 4.2' (W. Kutschera, 0.13-m Newtonian);
    31.97, 11.7, 2' (M. Filipek, 0.4-m Newtonian);
    31.97, 12.3, 2.5' (T. Karhula, Virsbo, Sweden, 0.305-m Newtonian);
    31.91, 11.8, 2' (A. Kammerer, Teufelsmuehle (Black Forest), Germany, 0.397-m Newtonian);
    31.67, 11.7, 2.1' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    31.63, 12.2, 2.5' (O. Miyazaki, 0.32-m Newtonian);
    31.03, 12.1, 2.2' (P. Dekelver, 0.3-m Newtonian + CCD);
    30.96, 10.3, 6.8' (E. Bryssinck, 0.4-m Newtonian + CCD);
    30.91, 12.4, 1.9' (T. Sciezor, Cracow, 0.06-m Camera lens + CCD);
    30.78, 11.8, 3.3' (K. Harikae, 0.15-m Newtonian + CCD);
    30.62, 11.8, 3' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    30.62, 12.7, 2' (O. Miyazaki, 0.32-m Newtonian);
    29.96, 11.8, 1.6' (G. Scheerle, 0.235-m Schmidt-Cassegrain);
    29.95, 12.2, 2.2' (T. Sciezor, Rzozów, 0.06-m Camera lens + CCD);
    29.91, 12.1, 2.1' (D. Heggie, Edinburgh, Scotland, 0.114-m Prime focus of a reflector + CCD);
    29.69, 11.6, 2.2' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    29.63, 12.4, 1.8' (O. Miyazaki, 0.32-m Newtonian);
    28.99, 11.5, 6.58' (K. Hills, 0.5-m Newtonian + CCD);
    28.78, 11.9, 3.1' (K. Harikae, 0.15-m Newtonian + CCD);
    28.03, 11.3, 7.33' (K. Hills, 0.5-m Newtonian + CCD);
    28.00, 13.1, 1.3' (T. Sciezor, Cracow, 0.06-m Camera lens + CCD);
    27.97, 11.7, 3.9' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    26.97, 12.3, 1.2' (T. Sciezor, Cracow, 0.06-m Camera lens + CCD);
    26.96, 11.6, 5.83' (K. Hills, 0.5-m Newtonian + CCD);
    25.98, 11.6, 6.02' (K. Hills, 0.5-m Newtonian + CCD);
    25.58, 12.6, 1' (O. Miyazaki, 0.32-m Newtonian);
    23.39, 11.2, 5' (N. Paul, iTelescope Utah Desert Remote Observatory USA, 0.28-m Schmidt-Cassegrain + CCD);
    23.03, 11.6, 6.02' (K. Hills, 0.5-m Newtonian + CCD);


30P/Reinmuth
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 05.10, 18.8, 0.2' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD);
    04.20, 18.7, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    03.12, 18.2, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
    02.19, 18.5, 0.6' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
jan 28.26, 19.1, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


32P/Comas Sola
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 03.08, 18.0, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);


33P/Daniel
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 04.79, 17.4, 0.7' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.4' tail in p.a. 147 deg);
    03.95, 18.4, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
jan 27.15, 18.0, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


43P/Wolf-Harrington
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 17.85, 16.7, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    16.77, 16.4, -- (G. van Buitenen, Dordrecht, NL (G06), 0.203-m Ritchey-Chretien + CCD);
    13.91, 17.7, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    08.76, 16.7, 0.9' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    01.81, 16.4, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD);
    01.79, 16.4, 1.2' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 1' tail in p.a. 76 deg);
jan 30.79, 16.4, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
    26.91, 17.7, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


49P/Arend-Rigaux
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 17.78, 15.6, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    04.75, 16.0, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    03.73, 16.2, 0.31' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD);
    01.75, 15.6, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD);
jan 26.83, 17.0, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    25.54, 16.3, 0.4' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);


50P/Arend
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 02.17, 19.7, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);


65P/Gunn
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 05.36, 16.3, 0.9' (T. Lehmann, Chile (remote), 0.25-m Newtonian + CCD; 0.9' tail in p.a. 285 deg);


95P/Chiron
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jan 25.85, 18.7, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


130P/McNaught-Hughes
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 17.87, 18.6, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
    01.83, 18.1, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);


154P/Brewington
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 17.18, 18.6, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
    02.15, 19.0, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
jan 23.05, 19.5, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


195P/Hill
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 18.81, 17.7, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
    03.85, 18.4, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
jan 26.05, 18.3, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


242P/Spahr
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 18.76, 19.8, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
    13.88, 18.7, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    02.80, 18.0, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
jan 26.61, 18.1, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    25.87, 18.7, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


253P/PANSTARRS
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jan 26.84, 19.6, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


268P/Bernardi
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jan 23.07, 20.8, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


276P/Vorobjov
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 17.89, 18.0, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
    04.79, 17.6, 0.3' (P. Dekelver, 0.3-m Newtonian + CCD);
    02.55, 17.3, 0.41' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);
    01.92, 16.3, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD; 0.4' tail in p.a. 276 deg);
    01.55, 17.5, 0.4' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
jan 31.54, 17.5, 0.4' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    30.56, 17.7, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);


305P/Skiff
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 02.53, 17.7, 0.41' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);
    01.54, 18.3, 0.4' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
jan 30.54, 17.8, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);


333P/LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 18.79, 18.0, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
    04.75, 16.0, 1.3' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 1' tail in p.a. 39 deg);
    02.77, 16.7, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD; 1.6' tail in p.a. 46 deg);
    01.75, 15.8, 1.4' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 2' tail in p.a. 41 deg);
    01.52, 17.3, 0.2' (J. Xiong, Daocheng, China(remote,O40), 0.203-m Newtonian + CCD; 0.5' tail);
jan 31.80, 17.0, 0.3' (J. Chambó Bris, Valles, Valencia, Spain, 0.2-m Newtonian + CCD; 0.6' tail in p.a. 49 deg);


450P/LONEOS
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 17.98, 18.5, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);


472P/NEAT-LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 18.02, 16.4, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
    04.91, 15.6, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
    03.87, 16.8, 0.56' (K. Hills, 0.5-m Newtonian + CCD);
    02.03, 16.1, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
jan 30.95, 17.7, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
    30.68, 16.0, 0.4' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD; 0.3' tail in p.a. 15 deg);
    29.61, 16.4, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD; 0.4' tail in p.a. 18 deg);
    27.09, 17.0, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    26.56, 15.9, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);


487P/SidingSpring
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 19.07, 17.5, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD; 0.5' tail in p.a. 164 deg);
    17.12, 17.6, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
    13.93, 18.2, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    04.04, 17.1, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
    03.83, 18.0, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    02.03, 17.0, 0.7' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    01.94, 16.5, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD; 0.9' tail in p.a. 150 deg);
jan 31.88, 15.7, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
    26.94, 17.7, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


496P/Hill
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 18.96, 16.0, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    17.91, 15.8, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD);
    16.80, 16.1, -- (G. van Buitenen, Dordrecht, NL, 0.203-m Ritchey-Chretien + CCD);
    13.96, 17.3, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    04.02, 16.3, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    01.90, 16.1, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
jan 31.84, 16.3, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    31.82, 15.0, 2.3' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1' tail in p.a. 83 deg);
    30.84, 16.3, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    27.85, 16.9, 0.56' (K. Hills, 0.5-m Newtonian + CCD);


C/2014 UN271 (Bernardinelli-Bernstein)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 14.55, 15.6, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    07.60, 15.8, 0.46' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);
    05.58, 15.7, 0.6' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);
    05.16, 15.1, 2.2' (T. Lehmann, Chile (remote), 0.25-m Newtonian + CCD);
    04.56, 15.5, 0.5' (A. Pearce, 0.35-m Schmidt-Cassegrain + CCD);
    03.63, 15.8, 0.6' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);
    01.65, 15.8, 0.8' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
jan 29.71, 15.7, 0.7' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    28.54, 15.6, 0.8' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    28.18, 16.3, 0.4' (M. Mašek, Malargue, 0.3-m Cassegrain reflector + CCD);
    28.17, 15.9, 0.4' (M. Mašek, Malargue, 0.3-m Cassegrain reflector + CCD);
    27.67, 15.8, 0.8' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    26.64, 15.9, 0.8' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    25.55, 15.9, 0.8' (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
feb 18.87, 17.5, 0.6' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 0.5' tail in p.a. 97 deg);
    18.00, 16.2, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    16.83, 15.8, -- (G. van Buitenen, Dordrecht, NL, 0.203-m Ritchey-Chretien + CCD);
    14.99, 17.5, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    04.04, 16.1, 0.6' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    03.86, 17.4, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    03.55, 15.9, 0.46' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);
    02.01, 15.0, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD; 0.7' tail in p.a. 116 deg);
    01.58, 16.4, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    01.57, 17.0, 0.2' (J. Xiong, Daocheng, China(remote,O40), 0.203-m Newtonian + CCD);
jan 31.92, 16.3, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    31.58, 16.0, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    30.93, 15.8, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD);
    29.60, 16.0, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    28.57, 16.4, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    27.88, 16.8, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    27.60, 16.2, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    26.55, 16.2, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);


C/2019 T4 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 04.24, 18.3, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);


C/2019 U5 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 15.60, 16.0, 0.8' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD; 0.7' tail in p.a. 78 deg);
    07.61, 16.0, 0.4' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);
    05.57, 15.8, 0.8' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);
    04.60, 16.4, 0.6' (A. Pearce, 0.35-m Schmidt-Cassegrain + CCD; 2.9' tail in p.a. 96 deg);
    03.67, 16.0, 0.6' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);
    01.75, 16.4, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
jan 31.65, 15.8, 0.4' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    30.75, 16.1, 0.7' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    29.73, 16.3, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    28.27, 16.5, 0.4' (M. Mašek, Malargue, 0.3-m Cassegrain reflector + CCD);
    28.27, 16.3, 0.4' (M. Mašek, Malargue, 0.3-m Cassegrain reflector + CCD; 0.2' tail in p.a. 147 deg);
    26.61, 16.1, 0.8' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD; 0.5' tail in p.a. 89 deg);


C/2020 K1 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 05.55, 16.9, 0.46' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);
    04.58, 17.2, 0.5' (A. Pearce, 0.35-m Schmidt-Cassegrain + CCD);
    03.69, 16.7, 0.6' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);
    01.67, 17.1, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
jan 30.73, 16.7, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    27.76, 16.9, 0.6' (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
feb 19.12, 14.3, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD);
    07.34, 14.2, 1.4' (T. Lehmann, Chile (remote), 0.25-m Newtonian + CCD; 0.18° tail in p.a. 241 deg);
    04.76, 14.0, 1.2' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD; 3.1' tail in p.a. 243 deg);
    04.22, 14.1, 0.9' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    03.78, 13.8, 1.4' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD; 5.2' tail in p.a. 241 deg);
    03.14, 13.5, 1.5' (P. Dekelver, 0.3-m Newtonian + CCD; 4.1' tail in p.a. 240 deg);
    01.21, 14.2, 1.6' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 1.8' tail in p.a. 245 deg);
jan 31.78, 14.5, 0.7' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    30.54, 14.0, 2.2' (T. Lehmann, Utah (remote), 0.106-m Refractor + CCD; 0.09° tail in p.a. 239 deg);
    29.86, 14.3, 0.9' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 5.5' tail in p.a. 245 deg);
    28.27, 14.6, 0.94' (K. Hills, 0.5-m Newtonian + CCD);


C/2021 S3 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 17.20, 17.1, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
    04.84, 17.2, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
    02.24, 16.8, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
jan 31.86, 16.4, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    31.77, 15.9, 1.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);


C/2022 E2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 18.86, 15.4, 0.6' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 2.1' tail in p.a. 53 deg);
    18.86, 13.7, 0.7' (P. Dekelver, 0.3-m Newtonian + CCD; 9.2' tail in p.a. 64 deg);
    17.78, 12.6, 1.2' (C. Harder, Jeersdorf f, 0.531-m Newtonian);
    17.76, 15.1, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD; 8.6' tail in p.a. 63 deg);
    17.06, 13.6, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD; 4.3' tail in p.a. 61 deg);
    14.79, 14.4, 0.8' (J. Chambó Bris, Valles, Valencia, Spain, 0.2-m Newtonian + CCD; 6.5' tail in p.a. 63 deg);
    13.90, 15.7, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    11.48, 14.3, 0.5' (Y. Yamaguchi, 0.076-m Refractor + CCD);
    08.80, 14.1, 1.3' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.21° tail in p.a. 64 deg);
    04.75, 13.9, 0.7' (E. Bryssinck, 0.4-m Newtonian + CCD);
    04.72, 15.3, 0.2' (M. Mančuška, Boldog (Quattro 6) (MPC 247), 0.15-m Newtonian + CCD; 6.4" tail in p.a. 55 deg);
    04.00, 14.1, 0.7' (P. Dekelver, 0.3-m Newtonian + CCD; 5.5' tail in p.a. 62 deg);
    03.82, 13.8, 1' (H. Kiiskinen, 0.4-m Ritchey-Chretien + CCD; 4' tail in p.a. 68 deg);
    03.75, 14.3, 0.7' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD);
    01.83, 13.8, 2.2' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.13° tail in p.a. 66 deg);
    01.83, 13.2, 0.9' (W. Kutschera, 0.508-m Newtonian);
    01.77, 14.0, 0.9' (P. Dekelver, 0.3-m Newtonian + CCD; 8.4' tail in p.a. 65 deg);
    01.54, 14.1, 0.4' (J. Xiong, Daocheng, China(remote,O40), 0.203-m Newtonian + CCD; 7' tail in p.a. 55 deg);
jan 31.90, 13.2, 0.7' (T. Karhula, Virsbo, Sweden, 0.305-m Newtonian);
    31.80, 13.9, 1.2' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.17° tail in p.a. 65 deg);
    31.80, 14.0, 0.7' (P. Dekelver, 0.3-m Newtonian + CCD; 8.1' tail in p.a. 64 deg);
    31.43, 12.9, 1.1' (O. Miyazaki, 0.32-m Newtonian);
    30.78, 13.9, 0.7' (P. Dekelver, 0.3-m Newtonian + CCD; 3.8' tail in p.a. 59 deg);
    30.76, 13.4, 0.9' (E. Bryssinck, 0.4-m Newtonian + CCD);
    29.43, 13.2, 0.5' (O. Miyazaki, 0.32-m Newtonian);
    27.75, 14.0, 0.7' (C. Harder, Jeersdorf f, 0.531-m Newtonian);
    26.92, 14.6, 0.75' (K. Hills, 0.5-m Newtonian + CCD);


C/2022 L2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 05.71, 17.0, 0.25' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);
    04.65, 17.5, 0.3' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    03.73, 16.4, 0.36' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);
    01.77, 16.8, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
jan 30.81, 17.5, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    29.76, 17.0, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    27.62, 16.3, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);


C/2022 N2 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 03.75, 15.2, 1.2' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    02.78, 15.1, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
jan 30.74, 15.0, 0.5' (E. Bryssinck, 0.4-m Newtonian + CCD);


C/2022 QE78 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 18.88, 16.4, 0.3' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD);
    18.87, 14.3, 0.8' (W. Kutschera, 0.508-m Newtonian + CCD);
    16.80, 15.5, 0.3' (J. Chambó Bris, Valles, Valencia, Spain, 0.2-m Newtonian + CCD; 0.6' tail in p.a. 246 deg);
    15.59, 15.4, 0.7' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD; 0.6' tail in p.a. 246 deg);
    07.56, 15.1, 0.46' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);
    05.61, 15.1, 0.7' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD; 0.6' tail in p.a. 239 deg);
    04.93, 14.8, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
    04.62, 14.8, 0.7' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD; 0.6' tail in p.a. 247 deg);
    04.06, 14.2, 0.9' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    03.89, 16.3, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    03.71, 14.8, 0.6' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);
    02.05, 15.2, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    01.59, 15.9, 0.25' (J. Xiong, Daocheng, China(remote,O40), 0.203-m Newtonian + CCD);
jan 31.98, 14.8, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    31.97, 15.0, 1.2' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 2.2' tail in p.a. 238 deg);
    31.61, 15.4, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    30.97, 15.0, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD);
    29.63, 15.4, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD; 1.1' tail in p.a. 249 deg);
    28.58, 15.1, 0.7' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    27.92, 15.7, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    27.57, 15.0, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    27.06, 16.1, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    26.61, 15.1, 0.7' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);


C/2022 R6 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 15.54, 16.4, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD; 0.6' tail in p.a. 244 deg);
    07.63, 16.0, 0.46' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);
    05.60, 16.4, 0.35' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);
    04.61, 16.1, 0.5' (A. Pearce, 0.35-m Schmidt-Cassegrain + CCD);
    03.94, 17.5, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    03.72, 15.9, 0.46' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);
    01.74, 15.9, 0.46' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
jan 30.77, 16.1, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    29.80, 16.8, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    27.78, 16.0, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    26.97, 17.4, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


C/2022 U3 (Bok)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jan 27.08, 18.8, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


C/2023 A3 (Tsuchinshan-ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 19.22, 12.8, 0.7' (P. Dekelver, 0.3-m Newtonian + CCD);
    08.88, 11.7, 1.5' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 7' tail in p.a. 25 deg);
    07.86, 11.2, 2' (K. Harikae, 0.15-m Newtonian + CCD);
    04.85, 10.9, 2.2' (K. Harikae, 0.15-m Newtonian + CCD);
    03.88, 12.4, 0.8' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 3' tail in p.a. 5 deg);
    02.22, 10.5, 5.7' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.09° tail in p.a. 42 deg);
jan 30.87, 10.5, 1.7' (K. Harikae, 0.15-m Newtonian + CCD);
    28.86, 10.9, 1.8' (K. Harikae, 0.15-m Newtonian + CCD);


C/2023 H5 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 19.94, 16.1, 0.3' (E. Bryssinck, 0.4-m Newtonian + CCD; 2' tail in p.a. 208 deg);
    09.12, 16.1, 0.7' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 2.3' tail in p.a. 211 deg);
    08.70, 16.5, 0.3' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 3' tail in p.a. 210 deg);
    05.06, 16.4, 0.35' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD; 2.2' tail in p.a. 214 deg);
    04.17, 16.5, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    04.10, 17.0, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    02.89, 16.0, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD; 2.2' tail in p.a. 218 deg);
    01.17, 16.2, 0.7' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 1.8' tail in p.a. 213 deg);
    01.07, 15.9, 0.7' (P. Dekelver, 0.3-m Newtonian + CCD; 1.9' tail in p.a. 219 deg);
jan 31.48, 16.2, 0.9' (T. Lehmann, Utah (remote), 0.28-m Newtonian + CCD; 0.05° tail in p.a. 215 deg);
    23.19, 16.9, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


C/2023 Q1 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 18.11, 16.0, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    17.89, 15.5, 0.6' (E. Bryssinck, 0.4-m Newtonian + CCD);
    17.16, 15.8, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD);
    16.89, 15.5, -- (G. van Buitenen, Dordrecht, NL, 0.203-m Ritchey-Chretien + CCD);
    08.95, 15.1, 2.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1.7' tail in p.a. 272 deg);
    05.87, 16.3, 0.4' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD; 1.1' tail in p.a. 274 deg);
    04.87, 16.3, 0.4' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD; 1.4' tail in p.a. 268 deg);
    04.77, 15.4, 0.6' (E. Bryssinck, 0.4-m Newtonian + CCD);
    04.08, 16.0, 0.6' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    04.01, 17.1, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    02.09, 15.6, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD);
    01.98, 15.2, 2' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.9' tail in p.a. 271 deg);
    01.64, 16.9, 0.2' (J. Xiong, Daocheng, China(remote,O40), 0.203-m Newtonian + CCD);
    01.04, 14.9, 2.5' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.04° tail in p.a. 272 deg);
    01.02, 15.8, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
jan 31.93, 14.7, 3.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1.5' tail in p.a. 282 deg);
    31.00, 15.6, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD);
    30.44, 14.3, 0.6' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD);
    30.33, 14.4, 5.1' (T. Lehmann, Utah (remote), 0.28-m Newtonian + CCD; 2.1' tail in p.a. 277 deg);
    29.88, 16.6, 0.5' (D. Heggie, Edinburgh, Scotland, 0.114-m Prime focus of a reflector + CCD);
    28.21, 16.4, 0.56' (K. Hills, 0.5-m Newtonian + CCD);
    27.94, 16.5, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    24.13, 16.3, 0.56' (K. Hills, 0.5-m Newtonian + CCD);
    23.37, 14.0, 6.3' (T. Lehmann, Utah (remote), 0.28-m Newtonian + CCD; 1.9' tail in p.a. 276 deg);


C/2023 R1 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 02.75, 16.6, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);


C/2023 T3 (Fuls)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 07.77, 16.4, 0.4' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);
    05.74, 16.3, 0.5' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD; 0.5' tail in p.a. 310 deg);
    04.71, 16.5, 0.5' (A. Pearce, 0.35-m Schmidt-Cassegrain + CCD);
    03.77, 16.0, 0.6' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);
    01.81, 16.7, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD; 1.4' tail in p.a. 281 deg);
jan 30.84, 16.7, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    27.74, 16.3, 0.46' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD; 0.9' tail in p.a. 273 deg);


C/2023 X2 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 17.93, 18.6, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
    01.96, 16.2, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);


C/2024 A1 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 18.85, 15.3, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    16.87, 15.6, -- (G. van Buitenen, Dordrecht, NL, 0.203-m Ritchey-Chretien + CCD);
    07.64, 15.6, 0.4' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);
    05.63, 16.0, 0.5' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);
    05.18, 16.1, 0.7' (T. Lehmann, Chile (remote), 0.25-m Newtonian + CCD; 0.7' tail in p.a. 171 deg);
    04.64, 16.6, 0.5' (A. Pearce, 0.35-m Schmidt-Cassegrain + CCD);
    04.02, 16.5, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    03.88, 17.3, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    03.58, 15.9, 0.46' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);
    02.85, 16.2, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    01.87, 16.1, 1' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    01.72, 16.3, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    01.62, 16.4, 0.3' (J. Xiong, Daocheng, China(remote,O40), 0.203-m Newtonian + CCD);
    01.00, 15.5, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
jan 31.63, 16.3, 0.4' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    30.99, 15.8, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD);
    27.59, 15.8, 0.5' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);


C/2024 B1 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 14.22, 17.4, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    09.19, 15.9, 1' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);


C/2024 E1 (Wierzchos)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 06.22, 17.9, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    05.11, 18.0, 0.35' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD);
    01.22, 18.0, 0.3' (J. Chambó Bris, Valles, Valencia, Spain, 0.2-m Newtonian + CCD);
    01.13, 17.8, 0.7' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.3' tail in p.a. 328 deg);


C/2024 G3 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 16.96, 7.3, 4' (M. Goiato, 20x100 Binoculars);
    09.96, 6.5, 5' (M. Goiato, 20x100 Binoculars; 1° tail in p.a. 100 deg);
jan 30.94, 4.5, 12' (M. Goiato, 0.007-m Naked eye; 6° tail in p.a. 100 deg);
    30.94, 4.7, 10' (M. Goiato, 7x50 Binoculars; 9° tail in p.a. 100 deg);
    29.92, 4.9, 7' (M. Goiato, 7x50 Binoculars; 7° tail in p.a. 95 deg);
    28.92, 4.7, 6' (M. Goiato, 7x50 Binoculars; 7° tail in p.a. 95 deg);
    27.93, 4.5, 8' (M. Goiato, 7x50 Binoculars; 8° tail in p.a. 92 deg);
    27.41, 4.6, 7.5' (C. Wyatt, 15x70 Binoculars; 8° tail in p.a. 87 deg);
    23.95, 3.2, 8' (W. Souza, 10x50 Binoculars; 3.5° tail);
    23.95, 3.5, 8' (W. Souza, 20x80 Binoculars; 3° tail);


C/2024 J2 (Wierzchos)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 02.22, 16.2, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
    01.23, 15.1, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD);
jan 31.74, 14.6, 2.2' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.12° tail in p.a. 349 deg);


C/2024 L5 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 06.24, 16.1, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);


C/2024 M1 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 18.94, 17.3, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
    17.08, 17.3, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
    13.92, 18.0, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    08.85, 17.6, 0.3' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    04.77, 15.7, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
    03.16, 17.0, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
    01.90, 17.7, 0.7' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    01.85, 15.7, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
    01.11, 16.9, 0.3' (P. Dekelver, 0.3-m Newtonian + CCD);
    01.01, 17.7, 0.4' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
jan 31.86, 17.1, 0.3' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    30.82, 16.8, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    26.93, 17.1, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


C/2024 N4 (Sarneczky)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 20.08, 18.0, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
    19.14, 17.8, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    18.09, 17.9, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    17.14, 18.2, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
    04.09, 19.1, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    01.18, 17.9, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);


C/2024 S1 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jan 27.89, [19.0, -- (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);


C/2024 Y1 (Masek)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jan 24.13, 17.0, 1' (M. Mašek, Malargue, 0.107-m Camera lens + CCD);
    24.13, 15.8, 1.9' (M. Mašek, Malargue, 0.107-m Camera lens + CCD);


C/2025 A3 (Tsuchinshan)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 04.13, 19.9, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);


P/2015 CD60 (LINEAR)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 19.58, 19.1, 0.2' (J. Xiong, Daocheng, China(remote,O40), 0.203-m Newtonian + CCD);
    02.07, 17.0, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);


P/2019 A8 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 16.88, 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
feb 14.43, 17.5, 0.3' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD);
    05.84, 18.2, 0.2' (J. Ryske, Y71 Makroskooppi, Fregenal de la Sierra, Spain, 0.3-m Ritchey-Chretien + CCD; 0.25' tail in p.a. 80 deg);
jan 30.83, 18.2, -- (J. Ryske, Y71 Makroskooppi, Fregenal de la Sierra, Spain, 0.3-m Ritchey-Chretien + CCD);
    28.09, 18.7, 0.3' (M. Mašek, Malargue, 0.3-m Cassegrain reflector + CCD; 0.2' tail in p.a. 67 deg);
    25.86, 18.6, -- (J. Ryske, Y71 Makroskooppi, Fregenal de la Sierra, Spain, 0.3-m Ritchey-Chretien + CCD);


P/2023 S1
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb 19.96, 14.8, 0.7' (E. Bryssinck, 0.4-m Newtonian + CCD);
    18.90, 15.4, 1.1' (T. Csorgei, 0.28-m Schmidt-Cassegrain + CCD; 1.2' tail in p.a. 295 deg);
    18.14, 16.2, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
    17.91, 13.7, 0.7' (W. Kutschera, 0.508-m Newtonian);
    16.92, 15.2, -- (G. van Buitenen, Dordrecht, NL (G06), 0.203-m Ritchey-Chretien + CCD);
    09.03, 14.1, 2.6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.1° tail in p.a. 297 deg);
    07.68, 15.5, 0.4' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);
    06.17, 14.6, 1.3' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    05.72, 14.7, 0.7' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD);
    04.67, 14.8, 0.7' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD; 1.2' tail in p.a. 285 deg);
    04.11, 14.4, 1.7' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    03.59, 14.7, 0.8' (A. Pearce, Perth Observatory, Bickley (MPC 323), 0.35-m Schmidt-Cassegrain + CCD; 1.2' tail in p.a. 300 deg);
    02.13, 14.7, 0.7' (P. Dekelver, 0.3-m Newtonian + CCD);
    01.94, 13.8, 3.8' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.12° tail in p.a. 293 deg);
    01.66, 15.8, 0.3' (J. Xiong, Daocheng, China(remote,O40), 0.203-m Newtonian + CCD);
    01.61, 15.1, 0.9' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD; 2' tail in p.a. 295 deg);
    01.03, 14.8, 0.7' (P. Dekelver, 0.3-m Newtonian + CCD; 3.5' tail in p.a. 298 deg);
jan 31.98, 14.0, 2.7' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.12° tail in p.a. 295 deg);
    31.95, 13.7, 0.8' (W. Kutschera, 0.508-m Newtonian);
    31.66, 15.0, 0.6' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD);
    31.02, 14.7, 0.7' (P. Dekelver, 0.3-m Newtonian + CCD; 1.1' tail in p.a. 294 deg);
    30.60, 14.8, 0.9' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD; 1.6' tail in p.a. 292 deg);
    30.49, 15.2, 0.6' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 2' tail in p.a. 295 deg);
    30.45, 13.8, 3.6' (T. Lehmann, Utah (remote), 0.106-m Refractor + CCD; 0.18° tail in p.a. 296 deg);
    29.68, 15.1, 0.8' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD; 1.8' tail in p.a. 290 deg);
    27.69, 15.2, 0.8' (A. Pearce, Perth Observatory, 0.35-m Schmidt-Cassegrain + CCD; 1.4' tail in p.a. 285 deg);
    23.04, 15.4, 0.94' (K. Hills, 0.5-m Newtonian + CCD);