* * * * * 210P/Christensen * * * * *

Year Mn Day    MM  Mag Ref Scope Pwr coma  DC tail p.a. Obs  Site
2020  5 24.43   M 13.8 AQ  40.6L 165  0.6  3            CAM  Katherine, NT
2020  5 17.35   M 13.6 AQ  25.0L 125  0.9  2/           WYA  Walcha, NSW
(Very diffuse and difficult. Low altitude 15.7°.)
2020  5 10.35   S 12.9 AQ  25.0L 125  1.1  3            WYA  Walcha, NSW
(Low altitiude 12.5°. Difficult, diffuse with slight brightening to centre.)
2020  4 22.865  S 11.2 AQ  25.4J  72  1.0  3/           BOU  Westerwijtwerd
(Low altitude 10.0° with Sun at -15.2°.)
2020  4 21.865  S 11.0 AQ  25.4J  72  1.2  3/           BOU  Westerwijtwerd
(Low altitude 9.0° with Sun at -15.5°.)
2020  4 20.867  S 11.2 AQ  25.4J  88 &1.0  4/           BOU  Westerwijtwerd
(Low altitude 7.6° with Sun at -16.1°.)

2009  3 22.14   S 13.7 HN  20.3T 133  1.0  2/           GON  Alto del Castro - Aralla, León
(Nearby field stars checked in DSS. Comparison stars taken from Henden photometry near NY Ser.)
2009  1  6.244  S 10.8 AU  31.0J  72  1.8  3/           DIJ  Burlage
2009  1  6.244  S 10.4 AU  31.0J  72  1.7  4            BOU  Burlage, Germany
2009  1  4.26   S 10.1 TK  20.3T 100  2.2  5            GON  Pandorado, León
(Mountain location, very clear sky. Beginning of astronomical twilight. Altitude 10°.)