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IAUC 4929: 1989e1

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                                              Circular No. 4929
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Telephone 617-495-7244/7440/7444 (for emergency use only)
TWX 710-320-6842 ASTROGRAM CAM     EASYLINK 62794505
MARSDEN or GREEN@CFA.BITNET    MARSDEN or GREEN@CFAPS2.SPAN


COMET SKORICHENKO-GEORGE (1989e1)
     A telex received on Dec. 21 from K. I. Churyumov, Kiev Observatory,
reports an earlier independent discovery of this comet by Skorichenko:

     1989 UT           R.A. (1950) Decl.       m1
     Dec. 17.71       19 51.5      +25 29      10

     The following additional precise positions have been reported:

     1989 UT             R.A. (1950) Decl.        m1    Observer
     Dec. 21.37326   19 58 29.92   +25 52 00.4          Hayakawa
          21.38368   19 58 31.08   +25 52 04.8            "
          21.40035   19 58 32.81   +25 52 12.5   10.5   Arai
          21.42662   19 58 36.1    +25 52 22            Kojima
          23.37882   20 02 18.18   +26 06 38.5   11     Sugie

S. Hayakawa (YGCO Nagano Station).  0.25-m f/4.0 reflector.
M. Arai and H. Mori (Yorii Observatory).  0.30-m f/3.8 Comet-Patrol
  Camera.  Measured by Mori.
T. Kojima (YGCO Chiyoda Observatory).  0.25-m f/3.4 Wright-Schmidt.
A. Sugie (Dynic Astronomical Observatory).  0.25-m f/3.4 Schmidt.

     Preliminary parabolic orbital elements by S. Nakano, Center for
Astrophysics, from 9 observations, Dec. 20-23:

     T = 1990 Apr. 14.039 ET          Peri. = 134.543
                                      Node  = 277.536   1950.0
     q = 1.67954 AU                   Incl. =  59.065

     1989/90      R.A. (1950) Decl.     Delta      r       m1
     Dec. 20    19 55.95    +25 42.4    2.603    2.242    10.1
          25    20 05.45    +26 19.1
          30    20 15.56    +27 00.6    2.553    2.162     9.9
     Jan.  4    20 26.30    +27 47.0
           9    20 37.69    +28 38.2    2.498    2.085     9.7
          14    20 49.77    +29 33.7
          19    21 02.58    +30 33.3    2.442    2.013     9.5
          24    21 16.15    +31 36.6
          29    21 30.53    +32 42.9    2.388    1.946     9.3


1989 December 23               (4929)             Daniel W. E. Green

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