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IAUC 4631: 1988h

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                                                  Circular No. 4631
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
MARSDEN or GREEN@CFA.BITNET    MARSDEN or GREEN@CFAPS2.SPAN


COMET SHOEMAKER-HOLT-RODRIQUEZ (1988h)
     The following precise positions have been reported:

     1988 UT             R.A. (1950) Decl.        m1    Observer
     July  6.63090   19 51 57.32   +16 15 09.8   15.5   Seki
           6.65990   19 51 55.54   +16 14 55.8           "
          11.16911   19 46 59.03   +15 36 09.0          Schwartz
          11.38663   19 46 44.27   +15 34 05.6   15.0   Helin
          11.42083   19 46 41.79   +15 33 48.5            "
          16.23819   19 41 13.30   +14 46 14.8          Bus
          16.25351   19 41 12.26   +14 46 05.2           "

T. Seki (Geisei).  0.6-m reflector.
G. Schwartz (Oak Ridge Observatory).  Measurer C.-Y. Shao.
E. Helin, J. Alu, B. Roman, and E. Majkowski (Palomar).
   0.46-m reflector.  Measurer R. Coker.
S. J. Bus and K. W. Zeigler (Lowell Observatory, Anderson Mesa Station).
    1.8-m reflector + CCD.  Communicated by E. Bowell.

     Improved parabolic elements from observations June 11-July 16:

     T = 1989 June 12.480 ET          Peri. = 232.204
                                      Node  = 114.572   1950.0
     q = 2.47202 AU                   Incl. =  97.659

     1988 ET      R.A. (1950) Decl.     Delta      r       m1
     Aug.  7    19 15.99    +10 01.0    3.203    4.049    13.6
          17    19 05.37    + 7 19.4
          27    18 56.18    + 4 27.2    3.208    3.899    13.4
     Sept. 6    18 48.77    + 1 31.5
          16    18 43.37    - 1 22.1    3.324    3.751    13.4
          26    18 40.05    - 4 08.9
     Oct.  6    18 38.75    - 6 46.3    3.505    3.606    13.3
          16    18 39.36    - 9 13.0
          26    18 41.73    -11 28.7    3.700    3.464    13.2
     Nov.  5    18 45.69    -13 33.8
          15    18 51.07    -15 29.2    3.867    3.326    13.2
          25    18 57.71    -17 16.0
     Dec.  5    19 05.46    -18 55.6    3.973    3.194    13.0


1988 July 19                   (4631)            Daniel W. E. Green

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