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IAUC 3618: 1981g; 1981h; 1975 IX

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IAUC number 

                                                  Circular No. 3618
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
TWX 710-320-6842 ASTROGRAM CAM     Telephone 617-864-5758


COMET GONZALEZ (1981g)
     C. Torres, Department of Astronomy, University of Chile, provides
the following precise position, presumably of the cometary object
reported on IAUC 3617:

     1981 UT             R. A. (1950) Decl.       m1
     July 22.41453     0 17 46.4    -69 01 13     16

     The following ephemeris, by the undersigned, should be regarded
as very uncertain, but it may help observers locate the comet:

     1981 ET     R. A. (1950) Decl.     Delta     r      m1
     June  5    23 49.20    -36 58.7    2.584   2.814   16.1
          15    23 57.64    -42 15.8
          25     0 05.44    -48 29.0    2.274   2.769   15.7
     July  5     0 12.13    -55 33.1
          15     0 16.80    -63 12.5    2.111   2.740   15.5
          25     0 17.2     -71 01.8
     Aug.  4     0 06.3     -78 29.9    2.138   2.726   15.5
          14    23 04.2     -84 58.2
          24    17 08       -86 56.5    2.330   2.728   15.7


PERIODIC COMET KEARNS-KWEE (1981h)
     This comet seems to have been recovered as follows:

     1981 UT             R. A. (1950) Decl.       m1     Observer
     June 29.77122     3 11 38.0    +25 14 43     18     Seki
     July 13.04        3 37 15.3    +27 04 06            Sheffer

T. Seki (Geisei).  0.6-m reflector.  Single observation.
Y. Sheffer (Wise Observatory).  1-m reflector.  Probable faint
   trail on a 42-min exposure consistent with expected motion.

     The above observations are moderately consistent in suggesting
that the prediction on MPC 5852 (elements on MPC 5129) requires correction
by Delta-T = -0.07 to -0.13 day.


COMET KOBAYASHI-BERGER-MILON (1975 IX)
     Corrigendum.  On IAUC 2810, the 1975 July 25.06239 observation
was made by Debehogne and Roland (Uccle), not by Tomita.


1981 July 24                   (3618)              Brian G. Marsden

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