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IAUC 6299: 1996 B2; C/1996 B1; 67P; 65P

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                                                  Circular No. 6299
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
BMARSDEN@CFA.HARVARD.EDU or DGREEN@CFA.HARVARD.EDU (science)
Phone 617-495-7244/7440/7444 (for emergency use only)


COMET 1996 B2
     T. Nakamura, National Astronomical Observatory, Tokyo, Japan;
and S. Nakano, Sumoto, report the visual discovery of another comet
by Yuji Hyakutake.  The following observations are available:

     1996 UT             R.A. (2000) Decl.        m1    Observer
     Jan. 30.826     14 31.2       -24 55        11.0   Hyakutake
          31.74632   14 32 03.65   -24 56 00.7          Kojima
          31.74872   14 32 03.87   -24 56 00.9   11.9   Ikari
          31.75363   14 32 03.94   -24 56 01.0          Kojima
          31.75710   14 32 04.18   -24 56 00.4   11.7     "
          31.75712   14 32 04.24   -24 56 01.2   12.0   Ikari

Y. Hyakutake (Hayato-machi, Aira-gun, Kagoshima-ken).  25x150
  binoculars.  Comet diffuse with central condensation; coma
  diameter about 2'.5.
T. Kojima (YGCO Chiyoda Observatory).  0.25-m f/6.0 reflector + CCD.
  Coma diameter about 2'.5, very strong condensation and short tail
  extended toward west-northwest.  Communicated by Nakano.
Y. Ikari (Ohtsu).  0.25-m reflector + CCD.  Communicated by Nakano.

     R. H. McNaught, Siding Spring, reports the comet as moderately
condensed with a 4' coma, m1 = 10 (20x120 binoculars) on Jan.
31.747 UT.


COMET C/1996 B1 (SZCZEPANSKI)
     Further total magnitude estimates:  Jan. 27.823 UT, 11.5 (T.
Osawa, Kawachi-cho, Tochigi-ken, Japan, 0.12-m f/6 reflector;
independent photographic discovery); 31.16, 9.3 (K. Hornoch,
Lelekovice, Czech Republic, 0.35-m reflector, visual; coma diameter
5').


COMET 67P/CHURYUMOV-GERASIMENKO
     Total magnitude estimates (cf. IAUC 6289): Jan. 14.75 UT, 12.0
(H. Mikuz, Miren, Slovenia, 0.20-m reflector); 17.15, 11.2 (A. Hale,
Cloudcroft, NM, 0.41-m reflector); 23.13, 11.4 (Hale).


COMET 65P/GUNN
     Total visual magnitude estimates by Hale (0.41-m reflector):
Jan. 21.54 UT, 13.7; 24.53, 13.7; 25.51, 13.7.

                      (C) Copyright 1996 CBAT
1996 January 31                (6299)            Daniel W. E. Green

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