Reports from Geisei Observatory <April 11, 2009>

C/2009 F6 (Yi-SWAN) and C/2009 G1 (STEREO)

Both comets have been discovered recently and are discussed by Mr. Hirohisa Sato on the notice board of our HP. They are faintly visible and even in photographs taken by the 70cm telescope they are faint because of the very bright moonlight near full moon. They will not brighten much. The magnitude of the nucleus of each comet is given below. The visual magnitudes will be at least 2 magnitudes brighter.

    CK09F060   2009 04 09.43785 00 20 41.49 +55 40 20.3          12.5 N      372
    CK09F060   2009 04 10.78924 00 32 03.31 +55 58 48.5                      372
    CK09F060   2009 04 10.79236 00 32 05.01 +55 58 51.6                      372
    CK09F060   2009 04 10.79444 00 32 05.85 +55 58 53.2                      372
    CK09F060   2009 04 10.79618 00 32 06.81 +55 58 53.9                      372

    CK09G010   2009 04 10.81233 22 36 00.71 -01 07 42.9          13.3 N      372
    CK09G010   2009 04 10.81806 22 36 01.30 -01 07 53.4                      372
    CK09G010   2009 04 10.81927 22 36 01.41 -01 07 56.1                      372