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* * * * * 62P/Tsuchinshan 1 * * * * *
Year Mn Day MM Mag Ref Scope Pwr coma DC tail p.a. Obs Site 2005 5 3.51 S[13.8 AU 40.0L 144 !0.8 YOS Gunma, Japan (Not visible at all.) 2005 4 5.53 S 13.8 AU 40.0L 144 1.8 2 YOS Ibaraki, Japan (I believed it became too faint to see visually. But actually, it is still visible, although very faint and diffuse.) 2005 3 8.56 S 13.3 AU 40.0L 144 0.8 1 YOS Ibaraki, Japan (Still visible, but extremely diffuse and hard to see.) 2005 2 9.05 S 12.4 HS 25.6L 84 1.3 3 BIV Poigny-la-foret 2005 2 6.984 S 12.6 AU 31.0J 109 1.2 0 DIJ Lauwersoog 2005 2 6.981 S 12.7 AU 31.0J 109 1.6 1/ BOU Lauwersoog 2005 2 5.80 S 13.1 HS 40.0L 75 1.2 0/ YOS Ibaraki, Japan (Extremely diffuse as before. The surface brightness became fainter, so now it is difficult to see. In the same field with NGC 4710 [11.0 mag], much brighter than 62P.) 2005 1 19.16 S 11.6 TK 25.6L 42 2.0 3 BIV Poigny-la-Foret 2005 1 8.78 S 11.0 TJ 40.0L 75 5.0 2 YOS Ibaraki, Japan (Very large! Very diffuse, but easy to see.) 2004 12 20.11 S 11.8 HS 25.6L 84 2.0 2 BIV Poigny-la-Foret 2004 12 14.67 S 11.8 GA 25.4L 71 SEA Cowra, NSW 2004 12 13.12 S 11.6 TK 20.3L 40 2.0 3 BIV Haute Provence Obs. 2004 12 12.14 S 11.9 HS 20.3L 95 2.0 4 BIV Haute Provence Obs. 2004 12 11.77 S 11.8 HS 40.0L 144 2.4 2 YOS Gunma, Japan (Very wide and diffuse. Much brighter than in November, and easy to see with a large telescope.) 2004 12 9.16 S 12.2 TK 20.3T 77 2 2 GON Aralla, León 2004 11 21.077 S 12.7 AU 31.0J 89 2.0 0/ DIJ Sint Annen 2004 11 21.075 S 12.3 AU 31.0J 89 2.2 2/ BOU Sint Annen 2004 11 17.021 S 12.6 TK 30.0T 74 1.5 1 LOO Le Castellard, France 2004 11 16.188 S 12.4 TK 30.0T 74 1.4 3 LOO Le Castellard, France 2004 11 16.16 S 12.8 TK 20.3T 77 1.7 2 GON Camposagrado, León 2004 11 9.77 S 13.8 HS 40.0L 144 2.0 1/ YOS Gunma, Japan