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* * * * * 62P/Tsuchinshan 1 * * * * *
Year Mn Day MM Mag Ref Scope Pwr coma DC tail p.a. Obs Site 2024 4 10.43 S 11.4 AQ 40.0L 59 4.3 3 WYA Walcha, NSW (Very diffuse, close to faint stars. Bright star held out of field to observe.) 2024 4 7.48 S 11.4 AQ 40.0L 59 5.0 2 WYA Walcha, NSW (Very diffuse and extended coma. Difficult.) 2024 3 12.47 M 10.5 AQ 40.0L 59 4.6 4 WYA Walcha, NSW (Diffuse. Star in western edge of coma. Extended outer coma.) 2024 3 8.912 S 10.4 AQ 25.4J 58 4 1/ BOU Burlage, Germany (Very diffuse object. Some interference from star of magn. 12.0 in coma.) 2024 3 8.910 S 10.5 AQ 25.4J 58 3.8 2/ DIJ Burlage 2024 3 7.969 S 11.2 AQ 15.5L 50 2 2 DIJ Burlage 2024 3 7.47 M 10.0 TK 40.0L 59 5.1 3/ WYA Walcha, NSW (Opaque centre, extended outer coma. Altitude 17.2°.) 2024 3 5.51 M 10.0:TK 40.0L 59 7 5 WYA Walcha, NSW (Magnitude uncertain due to proximity of bright star. Coma can be seen but outer coma visibility hindered.) 2024 3 4.006 S 11.6 AQ 15.5L 70 1.7 2 DIJ Burlage 2024 2 13.53 S 8.9 TK 7.0B 15 12.5 4 WYA Walcha, NSW (Diffuse. Close to stars but resolvable. Extended and transparent outer coma. Altitude 16.9°.) 2024 2 12.94 S 9.4 TK 20.0L 42 & 6 1 SCH Eerbeek (Very diffuse, difficult.) 2024 2 10.31 S 9.4 TK 22.0L 60 4 2 GOI Araçatuba 2024 2 7.985 S 9.1 TK 15.5L 29 8 4/ DIJ Burlage 2024 2 4.036 S 9.0 TK 15.5L 42 9.5 4 DIJ Burlage 2024 1 21.67 M 8.5 TK 40.0L 59 8.5 5 WYA Walcha, NSW (Very large and diffuse, opaque coma with extended edges. Pale aqua-blue in colour.) 2024 1 18.972 S 8.3 TK 8.0B 15 8.5 3/ DIJ Burlage (Moonlight.) 2024 1 18.63 M 8.2 TK 7.0B 15 13 4 WYA Walcha, NSW (Diffuse and opaque coma. Enhances in Swan Band filter, dims with Astronomik UHC filter applied.) 2024 1 15.20 S 8.6 TK 20.0L 42 6 4/ SCH Eerbeek 2024 1 15.039 S 8.0 TK 8.0B 15 12 4/ DIJ Burlage 2024 1 11.06 S 8.2 TK 8.0B 15 & 6 3 SCH Eerbeek 2024 1 11.06 S 8.1 TK 20.0L 42 6 4 SCH Eerbeek 2024 1 11.001 S 8.2 TA 8.0B 15 8 4 BOU Sint Annen 2024 1 10.975 S 7.6 TK 8.0B 15 10 4 DIJ Burlage 2024 1 10.16 S 8.4 TK 20.0L 42 5 5 SCH Eerbeek 2024 1 9.16 S 8.6 TK 20.0L 42 5 5 SCH Eerbeek 2024 1 9.005 S 8.1 TA 8.0B 15 8 3/ BOU Sint Annen 2024 1 8.953 S 7.6 TK 8.0B 15 9 3/ DIJ Burlage 2024 1 7.969 S 7.8 TK 8.0B 15 4 4/ DIJ Burlage 2024 1 7.21 S 7.9 TK 10.0B 20 8 3 GOI Araçatuba 2024 1 7.04 S 7.6 TK 5.0B 10 10 3/ GON Nogarejas, León 2024 1 6.23 S 8.0 TK 10.0B 20 7 2/ GOI Araçatuba 2023 12 25.30 S 8.1 TK 10.0B 20 6 2/ GOI Araçatuba 2023 12 22.132 S 8.5 TK 8.0B 15 9 4/ DIJ Burlage 2023 12 20.990 S 8.6 TK 8.0B 15 10 5 DIJ Burlage (Moonlight.) 2023 12 16.29 S 9.0 TK 10.0B 20 4 3 GOI Araçatuba 2023 12 15.05 S 8.8 TK 20.3T 77 6 3 0.3 290 GON Villacintor, León 2023 12 15.04 S 8.2 TK 5.0B 10 8 3/ GON Villacintor, León 2023 12 12.247 S 8.8 TK 8.0B 15 5 4 DIJ Burlage 2023 12 11.67 M 8.9 TK 40.0L 59 5.3 4/ WYA Walcha, NSW (Enhances well in Swan Band filter. Opaque centre, extended outer coma.) 2023 12 9.27 S 9.2 TK 10.0B 20 4 3 GOI Araçatuba 2023 11 22.025 S 10.5 AQ 15.5L 50 3.4 3 DIJ Burlage 2023 11 11.28 S 10.5 TK 22.0L 60 2.5 4 GOI Araçatuba 2023 10 25.159 S 12.4 AQ 25.4J 88 2.0 1/ BOU Sint Annen 2023 10 23.119 S 12.6 AQ 25.4J 88 1.8 1/ BOU Westerwijtwerd 2023 10 21.19 S 11.0 TK 20.3T 133 4 1/ GON Quintanilla de las Torres, Palencia
2018 2 25.160 S 13.7 AQ 30.5T 139 1 3/ DIJ Burlage 2018 2 25.157 S 13.5 AQ 30.5T 139 1.5 2 BOU Burlage, Germany (Comet close to star of magn. 11.5.) 2018 2 10.64 S 12.4 AQ 25.0L 83 2 2 WYA Walcha, NSW (Coma very diffuse, slight moonlight interference.) 2018 1 20.69 S 12.5 AQ 25.0L 39 3.1 3 WYA Walcha, NSW (Enhances slightly in Swan Band filter. Circular coma with an opaque but weak centre.) 2018 1 18.18 S 10.7 TK 20.3T 77 5 1/ GON Puerto de Aralla, León 2018 1 17.68 S 12.5 AQ 25.0L 83 3.3 2 WYA Walcha, NSW (Coma diffuse. Enhances slightly in Swan Band filter at 39x.) 2018 1 14.21 S 12.1 HS 40.7L 72 2.0 4 BIV 2018 1 13.67 S 11.8 AQ 25.0L 83 2 2 WYA Walcha, NSW (Coma very diffuse, slight brightening to centre.) 2017 12 23.67 S 11.7 AQ 25.0L 39 2.9 3 WYA Walcha, NSW (Low altitude 16°. No enhancement in Swan Band filter.) 2017 12 20.16 S 9.7 TK 20.3T 77 6 2 GON Puerto de Aralla, León 2017 12 18.78 S 11.3 TJ 40.0L 75 2.7 2 YOS Mt. Hanadate, Ibaraki (Bright. Looks diffuse as before.) 2017 12 16.19 S 9.7 TK 20.3T 77 6 2/ GON Villacintor, León 2017 12 15.30 S 10.4 TK 22.0L 60 4 3 GOI Araçatuba 2017 12 14.68 S 11.0 AQ 25.0L 39 4.3 3 WYA Walcha, NSW (Low altitude 16.5°. Coma does not enhance in Swan Band filter, diffuse.) 2017 11 26.20 S 9.8 TK 20.3T 77 6 2/ GON Puerto de Aralla, León 2017 11 25.192 S 10.6 AQ 25.4J 47 3.5 2/ BOU Sint Annen 2017 11 24.78 S 10.4 TJ 40.0L 75 4 1/ YOS Kita-karuizawa, Gunma (Bright and large. Diffuse.) 2017 11 24.70 S 10.9 AQ 25.0L 39 3.2 3 WYA Walcha, NSW (Coma enhances slightly in Swan Band filter. Low altitude 15.1°. Slightly foggy.) 2017 11 16.16 S 9.2 TK 10.0B 25 7 2/ GON Puerto de Aralla, León (Altitude 30°.) 2017 11 16.15 S 9.6 TK 20.3T 77 6 2 GON Puerto de Aralla, León 2017 11 14.12 S 9.6 TK 20.3T 77 6 2/ GON Puerto de Aralla, León (Altitude 21°. Before moonrise.) 2017 10 31.15 S 11.1 TK 40.7L 72 2.5 2 BIV 2017 10 30.72 S 11.0 AQ 25.0L 39 3.2 3 WYA Walcha, NSW (Low altitude 16.6°. Weakly condensed coma. Does not enhance in Swan Band filter.) 2017 10 26.77 S 11.5 TA 40.0L 75 2.4 3 YOS Kita-karuizawa, Gunma (I was surprised that it became very bright and large. Easy to see.) 2017 10 23.22 S 10.2 TK 20.3T 100 5 2 GON Alto del Castro - Aralla, León (Significantly brighter than expected. Altitude 46°. Zodiacal light.)
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