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Reports from Geisei Observatory<October 11, 2002>


• P/2002 T1(LINEAR), 46P/Wirtanen, C/2002 R3(LONEOS)
The following are measurements made by the 21cm Epsilon telescope. These will not be reported to IAU because the accuracy is not as good as that of the 60cm reflector. The 21cm telescope has a small f-ratio (f/3.0) and collects light around the coma resulting in a brighter magnitude measurement.
P/2002 T1
2002 UT        R.A   (2000)      Decl.     m1
Oct. 9.60625    1 36 47.48   +16 28 28.9  16.5
     9.67465    1 36 41.58   +16 37 09.2
    10.62986    1 35 36.95   +18 37 18.4  16.5
    10.64132    1 35 36.04   +18 38 44.6

46P/Wirtanen
2002 UT        R.A   (2000)      Decl.     m1
Oct. 9.82309   10 42 21.57   +14 00 56.9  10.5
    10.83004   10 45 40.78   +13 48 04.7  10.8

C/2002 R3
2002 UT        R.A   (2000)      Decl.     m1
Oct. 9.62292    3 48 38.42   +21 31 49.8  17.2
     9.63924    3 48 36.95   +21 31 49.5
     9.65486    3 48 35.54   +21 31 48.3 

46P/Wirtanen was visible in the 21cm telescope on October 9, but on the tenth it was not visible. In a photograph taken on October 10, it showed a little tail.
[46P/Wirtanen]
46P/Wirtanen
4:52-55 October 11, 2002
Telescope:ε210 Film:TM400






Copyright (C) 2002 Tsutomu Seki.