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IAUC 5414: 1991a1

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                                                  Circular No. 5414
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 SHOEMAKER-LEVY (1991a1)
     Further precise positions have been reported as follows:

     1991 UT             R.A. (2000) Decl.        m1    Observer
     Nov.  3.17188    1 53 25.31   +38 35 16.6          McCrosky
           3.18612    1 53 23.54   +38 35 14.6            "
           6.18884    1 47 11.63   +38 27 32.2            "
           6.20258    1 47 09.90   +38 27 29.8            "
           7.30920    1 44 52.26   +38 23 59.4   15.5   Shoemaker
           9.25938    1 40 49.70   +38 17 00.3            "
           9.31806    1 40 42.37   +38 16 47.7            "
     Dec.  1.76250    0 57 20.38   +35 52 07.5          Meyer
           1.80625    0 57 16.10   +35 51 46.0            "

R. E. McCrosky and C.-Y. Shao (Oak Ridge).  1.5-m reflector + CCD.
C. S. Shoemaker, E. M. Shoemaker and D. H. Levy (Palomar).  0.46-m
   Schmidt.  Measurer T. King.
E. Meyer and H. Raab (Linz).  0.3-m f/5.2 Schmidt-Cassegrain.

     Parabolic orbital elements from 26 observations Oct. 6-Dec. 1:

     T = 1992 July 24.5080 TT         Peri. = 145.2242
                                      Node  =  49.0506  2000.0
     q = 0.836525 AU                  Incl. = 113.5019

1991/92     R. A. (2000) Decl.     Delta      r    Elong. Phase      m1
Dec. 20     0 31.70    +33 14.4    2.862    3.342  110.9   16.0     15.0
     30     0 22.20    +31 55.0    2.913    3.226   99.6   17.5     14.9
Jan.  9     0 15.75    +30 48.9    2.970    3.109   88.8   18.4     14.8
     19     0 11.96    +29 59.8    3.025    2.990   78.6   18.8     14.7
     29     0 10.44    +29 29.1    3.072    2.870   69.0   18.7     14.5
Feb.  8     0 10.82    +29 17.3    3.105    2.748   60.0   18.1     14.4
     18     0 12.76    +29 24.2    3.119    2.625   51.8   17.2     14.2
     28     0 15.97    +29 49.3    3.111    2.500   44.4   16.1     13.9
Mar.  9     0 20.24    +30 32.6    3.077    2.374   37.9   14.9     13.7
     19     0 25.37    +31 34.1    3.017    2.246   32.8   13.9     13.4


1991 December 26               (5414)              Brian G. Marsden

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