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Reports from Geisei Observatory <December 30, 2009>


C/2006 OF2 (Broughton), C/2006 W3 (Christensen), C/2007 Q3 (Siding Spring), 22P/Kopff, 29P/Schwassmann-Wachmann, and 29P/Schwassmann-Wachmann

    These are the last photographic observations for 2009 at Geisei Observatory. C/2006 W3 (Christensen) has been visible for a while low in the southwestern sky in the evening, but the observations provided below are most likely the last in Japan.
    C/2006 OF2 (Broughton) is extremely diffused and very difficult to measure, while C/2007 Q3 (Siding Spring) is seen at 10-11th magnitude visually in the dawn sky. It would not become brighter than it is now.
    29P (29P/Schwassmann-Wachmann), well-known for its occasional outbursts, seems to be at the faintest with a photographic magnitude of 16-17th appearing almost like a cometary nucleus.


C/2007 Q3 (Siding Spring)
21-minute exposure from December 27, 2009, 01:07 (J.S.T)
70cm reflector, TMY 400 film



    CK06O02F   2009 12 20.72049 10 26 33.38 +04 09 52.9          16.0 T      372

    CK06W030   2009 12 04.37361 19 22 12.95 -14 50 11.8          13.0 N      372
    CK06W030   2009 12 04.38351 19 22 13.26 -14 50 16.8                      372
    CK06W030   2009 12 11.37778 19 25 54.38 -15 46 00.5          12.8 N      372
    CK06W030   2009 12 11.38299 19 25 54.50 -15 46 03.4                      372
    CK06W030   2009 12 11.38733 19 25 54.63 -15 46 05.4          12.9 N      372
    CK06W030   2009 12 14.37882 19 27 34.35 -16 08 26.8                      372
    CK06W030   2009 12 14.38403 19 27 34.53 -16 08 28.7          12.5 N      372
    CK06W030   2009 12 18.37882 19 29 51.58 -16 37 05.2          14.0 N      372

    CK07Q030   2009 12 16.78819 13 18 26.25 +20 54 07.0          10.0 T      372
    CK07Q030   2009 12 23.75642 13 31 51.29 +23 07 40.5          11.4 N      372
    CK07Q030   2009 12 26.76285 13 37 34.92 +24 09 00.5                      372

0022P          2009 12 11.40868 23 28 01.10 -08 48 19.1          17.0 N      372

0029P          2009 12 16.71181 09 53 46.71 +11 39 19.5          17.0 N      372
0029P          2009 12 20.67500 09 53 21.22 +11 38 02.5          16.9 N      372
0029P          2009 12 26.68889 09 52 23.35 +11 37 43.1          16.1 N      372

0217P          2009 12 16.62118 05 52 27.21 +04 24 21.1          13.7 N      372
0217P          2009 12 16.63372 05 52 26.31 +04 24 33.7                      372
0217P          2009 12 20.61528 05 48 12.10 +05 31 21.8          14.8 N      372
0217P          2009 12 23.65833 05 45 10.82 +06 22 31.1          14.5 N      372
0217P          2009 12 26.66771 05 42 25.76 +07 12 43.7          14.6 N      372
Copyright (C) 2009 Tsutomu Seki.