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IAUC 6553: P/1997 B1

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                                                  Circular No. 6553
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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COMET P/1997 B1 (KOBAYASHI)
     On Jan. 31 S. Nakano, Sumoto, Japan, reported observations on Jan. 30
and 31 by Takao Kobayashi of what appeared to be a minor planet.  Further
observations through Feb. 2 showed the orbit to be decidedly cometary.  In
response to our enquiry, W. Offutt verified that the object is indeed a
comet.  Available CCD precise positions follow, observers reporting the
comet as asteroidal except as noted.

     1997 UT             R.A. (2000) Decl.        m2    Observer
     Jan. 30.70931   10 00 20.77   +16 29 55.6   18     Kobayashi
          30.72829   10 00 20.04   +16 29 48.0            "
          31.66902    9 59 51.71   +16 22 47.8            "
          31.68528    9 59 51.20   +16 22 40.5            "
     Feb.  1.52586    9 59 25.23   +16 16 22.0            "
           1.77053    9 59 16.75   +16 14 31.5            "
           2.59105    9 58 50.59   +16 08 22.9   17.6   Abe
           2.60067    9 58 50.28   +16 08 18.0            "
           2.83560    9 58 42.63   +16 06 28.4   17.7   Ticha
           2.85667    9 58 41.92   +16 06 18.9            "
           3.20292    9 58 30.41   +16 03 43.9   17.8   Offutt
           3.23778    9 58 29.17   +16 03 28.2   17.6     "
           3.56081    9 58 18.31   +16 01 00.5          Kojima
           3.57109    9 58 17.97   +16 00 55.4   17.4     "
           3.90250    9 58 06.63   +15 58 23.2          Pravec
           3.91046    9 58 06.32   +15 58 19.7            "
           4.23674    9 57 55.23   +15 55 53.1   17.8   Offutt
           4.26837    9 57 54.05   +15 55 38.8   17.8     "
           4.48063    9 57 46.28   +15 54 00.2   17.7   Balam
           4.48720    9 57 46.07   +15 53 55.3   17.5     "
           4.60091    9 57 42.51   +15 53 05.5   17.3   Kojima
           4.61927    9 57 41.84   +15 52 58.1   17.1     "

T. Kobayashi (Oizumi).  0.41-m f/4.3 reflector.
H. Abe (Yatsuka).  0.26-m f/6 reflector.
J. Ticha and M. Tichy (Klet).  0.57-m f/5.2 reflector.  Measurer Tichy.
   Unfiltered images show suggestion of 10" tail in p.a. 300 deg.
W. Offutt (Cloudcroft).  0.6-m f/7 Ritchey-Chretien.  Head slightly
   diffuse; definite, very faint tail in p.a. 284 deg, 17" long on
   Feb. 3, 8" on Feb. 4.
T. Kojima (Chiyoda).  0.25-m f/6 reflector.
P. Pravec and L. Sarounova (Ondrejov).  0.65-m f/3.6 reflector.
D. D. Balam (Victoria).  0.5-m reflector.

                      (C) Copyright 1997 CBAT
1997 February 4                (6553)              Brian G. Marsden

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