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IAUC 4384: 1987o; 1987c

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IAUC number 

                                                  Circular No. 4384
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 617-495-7244/7440/7444


COMET SHOEMAKER (1987o)
     Carolyn S. and Eugene M. Shoemaker report their discovery of a
new comet with the 0.46-m Schmidt telescope at Palomar.   The
following positions are available:

  1987 UT             R. A.  (1950)   Decl.       m1     Observer
  Apr. 25.44583    16 48 15.93    + 6 29 55.2    14      Shoemaker
       25.48246    16 48 13.90    + 6 30 18.0                "
  May   4.34719    16 39 36.57    + 8 02 02.7    16.8    Skiff
        4.35984    16 39 35.78    + 8 02 08.0              "
        5.35417    16 38 34.76    + 8 12 06.1    16.5      "
        5.37172    16 38 33.52    + 8 12 18.5              "

C. and E. Shoemaker (Palomar).  Tail 0'.5 long to the southeast.
B. A. Skiff (Lowell Observatory, Anderson Mesa Station).  Measurer
   E. Bowell.

     The following preliminary parabolic orbital elements are from the
above observations (T and the argument of perihelion are very uncertain):

         T = 1986 Oct. 13.06 ET     Peri. =  12.79
                                    Node  = 267.37   1950.0
         q =   5.3815 AU            i     = 132.21

     1987 ET     R.A.  (1950) Decl.     Delta      r       m1
     Apr. 25    16 48.68    + 6 25.2    4.809    5.569    16.4
          30    16 43.94    + 7 17.6
     May   5    16 38.94    + 8 08.6    4.752    5.589    16.4
          10    16 33.71    + 8 57.7
          15    16 28.31    + 9 44.5    4.731    5.609    16.4
          20    16 22.79    +10 28.6
          25    16 17.19    +11 09.6    4.746    5.630    16.4
          30    16 11.59    +11 47.1
     June  4    16 06.05    +12 21.0    4.798    5.652    16.4


COMET NISHIKAWA-TAKAMIZAWA-TAGO (1987c)
     Total visual magnitude estimates:   Apr. 26.81 UT, 6.7 (J.
Kobayashi, Kumamoto, Japan, 0.31-m reflector); May 1.47, 7.4 (A.
Hale, Las Cruces, NM, 10x50 binoculars).
     Corrigendum.  On IAUC 4326, line -3, for  E. A. Jacobson
read  D. E. Freese


1987 May 5                     (4384)            Daniel W. E. Green

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