Reports from Geisei Observatory <March 26, 2010>

Observations of C/2007 Q3 (Siding Spring) and a photograph of bright C/2009 K5 (McNaught)

The nucleus of C/2007 Q3 was split and Component B has become very faint.
C/2009 K5 has brightened to show an attractive appearance in the predawn eastern sky. This photograph was taken with Nikon D-700 at ISO 2000 and image processing was made by Mr. Shimomoto. The nucleus is sharply imaged making the positional measurements accurate.

C/2009 K5 (McNaught)
10-minute exposure from 3:26, March 26, 2010 J.S.T.
70cm f/7 reflector, TM400 film
Copyright (C) 2010 T. Seki, Geisei Observatory

    CK07Q03a   2010 01 21.82118 14 24 34.37 +34 21 18.8                      372
    CK07Q03a   2010 03 25.72882 15 23 22.49 +58 42 44.3          14.5 N      372
    CK07Q03a   2010 03 25.74444 15 23 22.38 +58 42 59.5          14.3 N      372
    CK07Q03a   2010 03 25.80000 15 23 21.91 +58 43 51.6          14.5 N      372
    CK07Q03b   2010 03 25.72882 15 23 21.65 +58 42 42.5          17.3 N      372
    CK07Q03b   2010 03 25.80000 15 23 21.22 +58 43 49.1          17.5 N      372

    CK09K050   2010 03 17.76875 19 16 35.02 +08 19 16.2          11.1 T      372
    CK09K050   2010 03 17.78090 19 16 35.95 +08 19 59.1                      372
    CK09K050   2010 03 19.76146 19 19 18.10 +10 18 10.6          12.9 N      372
    CK09K050   2010 03 19.76597 19 19 18.42 +10 18 25.8                      372
    CK09K050   2010 03 25.78889 19 27 48.90 +16 53 30.0          11.6 T      372