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* * * * * 15P/Finlay * * * * *
Year Mn Day MM Mag Ref Scope Pwr coma DC tail p.a. Obs Site 2021 9 19.77 S 13.3 AU 40.0L 144 0.9 2 YOS Mt. Tsukuba, Ibaraki (Diffuse.) 2021 9 5.12 S 11.3 TK 20.3T 100 3 2 GON Alto del Castro, León 2021 8 11.11 S 10.3 TK 20.3T 100 5 2/ GON Alto del Castro, León 2021 8 10.77 S 11.9 AQ 40.0L 182 1.6 3/ WYA Walcha, NSW (Low altitude 13.8°. Diffuse, weakly condensed. Enhances slightly in Swan Band filter.) 2021 8 9.09 S 11.4 AQ 40.7L 72 3 3 BIV 2021 8 6.12 S 10.1 TK 20.3T 100 5 2/ GON Alto del Castro, León 2021 7 19.35 S 10.7 AU 22.0L 160 3 3 GOI Araçatuba 2021 7 14.11 S 10.2 TK 20.3T 100 5 3 GON Alto del Trichero, León 2021 7 12.77 M 11.3 AQ 40.0L 59 2.6 4 WYA Walcha, NSW (Altitude 18.6°. Diffuse, opaque centre. Enhances slightly in Swan Band filter.) 2021 7 9.10 S 10.3 TK 20.3T 77 5 3 GON Alto del Castro - Aralla, León 2021 7 6.76 M 11.1 AQ 40.0L 59 2.9 4 WYA Walcha, NSW (Enhances slightly in Swan Band filter. Opaque inner coma, semi-transparent outer coma. Altitude 18.6°.)
2015 2 17.788 S 11.7 AQ 25.4J 72 1.8 2 BOU Lauwersoog 2015 2 9.43 S 11.7 AQ 25.0L 83 1.9 2/ WYA Walcha, NSW (Low altitude 7.7°. Weakly condensed centre, sky background slightly hazy at low altitude, very windy.) 2015 2 7.78 S 11.1 TK 40.7L 72 3.5 2 BIV 2015 2 6.772 S 11.2 AQ 25.4J 72 1.5 3/ BOU Lauwersoog 2015 1 25.43 M 10.3 TK 25.0L 83 1.3 3 WYA Walcha, NSW (Low altitude 11.1°. Moonlight. Appears as a faint smudge slightly brighter than background sky with brightening to centre.) 2015 1 24.797 S 9.1 TK 8.0B 15 3 3 DIJ Burlage (Moonlight.) 2015 1 24.78 S 10.0 TK 40.7L 72 2.5 3 BIV 2015 1 24.42 M 10.5 AQ 25.0L 83 1 3 WYA Walcha, NSW (Low altitude 10.7°. Coma appears slightly elongated to the East approximately. Difficult due to twilight and moonlight interference. Observed in gaps in clouds.) 2015 1 20.750 S 8.6 TK 8.0B 15 4 4 DIJ Burlage 2015 1 18.43 M 8.2 TK 25.0L 39 2.4 4/ WYA Walcha, NSW (Low altitude 11°. Coma elongated to ENE approximately. Thinly veiled tail visible 2.5’ in length as measured from the coma centre in p.a. 73 deg.) 2015 1 17.76 S 8.5 TK 25.6L 42 3.0 6 BIV 2015 1 17.44 M 7.8 TK 25.0L 39 3.2 5 WYA Walcha, NSW (Low altitude 7.8°. Coma shows diffuse outer coma, gradually brightening to centre to a moderately condensed centre. At 83x,the central condensation is more smeared, opaque and a short tapered tail-like feature extends to the East but not beyond the coma.) 2015 1 16.99 M 7.0 TK 10.0B 20 4 6 GOI Araçatuba 2015 1 16.98 M 7.1 TK 22.0L 60 3 7 GOI Araçatuba 2015 1 14.43 M 10.7 AQ 25.0L 39 1.5 4 WYA Walcha, NSW (Low altitude 12.9°. Coma diffuse with brighter moderately condensed centre. At 83x the coma appears elongated to the East approximately.) 2014 12 29.43 M 10.6 AQ 25.0L 83 1.1 3 WYA Walcha, NSW (Coma very diffuse with weakly condensed central condensation. Centre enhances very slightly using Swan Band filter. Low altitude 15.5°. Moonlight interference.) 2014 12 26.97 S 9.2 TK 22.0L 60 3 3 GOI Araçatuba (Moonlight.) 2014 12 25.704 S 9.1 TK 15.5L 29 4 DIJ Burlage (Still close to Mars, moonlight.) 2014 12 24.97 S 9.2:TK 22.0L 160 3 4 GOI Araçatuba (Very near Mars, moonlight.) 2014 12 24.744 S 8.9 TK 8.0B 15 3 3/ DIJ Burlage (Comet at 8° altitude, 7' from Mars, moonlight.) 2014 12 24.717 S 9.3:TK 25.4J 88 2.5 2/ BOU Lauwersoog (Difficult observation, but definitely seen as a diffuse slightly condensed object only 5' from Mars. Fairly low at 11.7° altitude with the Sun at -15.3°. 2.7 days old Moon 9 degrees away at similar altitude.) 2014 12 21.42 S 9.2 TK 40.6L 76 2 2 CAM Warners Bay, NSW 2014 12 20.45 S 8.7 AA 10.0B 25 SEA Cowra, NSW (Seemed more condensed again [similar to Dec. 18].) 2014 12 20.42 S 9.0 TK 40.6L 76 2 3 CAM Warners Bay, NSW 2014 12 19.97 S 8.8 TK 22.0L 60 3 4 GOI Araçatuba 2014 12 19.46 S 8.7 AA 10.0B 25 4 0.2 90 SEA Cowra, NSW (Did not seem as condensed as at previous date.) 2014 12 18.46 S 8.6 AA 10.0B 25 SEA Cowra, NSW (Low elevation. Appeared to be rather strongly condensed and possibly slightly elongated in anti-solar direction. Somewhat enhanced using Swan Band filter.) 2014 12 18.42 S 9.0 TK 40.6L 76 3 4 CAM Warners Bay, NSW 2014 12 15.43 S 11.0 AQ 25.0L 39 1.5 3 WYA Walcha, NSW (Low altitude 14.6°. Zodiacal light interference. Coma shows very diffuse outer coma and a noticeable central condensation.)
2008 9 9.79 S[13.1 TA 40.0L 257 !0.6 YOS Kita-karuizawa, Gunma (It was mag. 10-11 in August, however, it faded so much within one month.) 2008 8 9.14 S 10.9 TK 20.3T 100 2.5 3 GON Alto del Castro - Aralla, León 2008 8 3.76 S 10.8:TJ 40.0L 144 1.5 4 YOS Kita-karuizawa, Gunma (Tough to see due to the low sky condition. Unexpectedly, the comet is still bright.) 2008 8 2.12 S 11.2 TK 20.3T 77 2.0 3 GON Alto del Castro - Aralla, León (Altitude: 13 deg.) 2008 7 15.13 S 9.2 TK 10.0B 25 4 3 GON Alto del Castro - Aralla, León 2008 7 15.12 S 9.6 TK 20.3T 77 3 4 GON Alto del Castro - Aralla, León (Mountain location, very clear sky. Beginning of astronomical twilight; altitude: 12 deg.) 2008 7 8.11 S 9.7 TK 20.3T 77 2.5 3/ GON Alto del Castro - Aralla, León (Mountain location, very clear sky. Beginning of astronomical twilight; altitude: 9 deg.) 2008 6 14.80 S 10.7 GA 25.4L 71 3 SEA Cowra, NSW (Enhanced through Swan Band filter.)