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IAUC 5177: 1991d

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                                                  Circular No. 5177
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 (1991d)
     The following precise positions have been reported:

     1991 UT             R.A. (1950) Decl.        m1    Observer
     Jan. 13.44844    9 44 27.17   - 3 23 18.0   15.0   Helin
          13.46736    9 44 26.49   - 3 23 08.3            "
          15.49896    9 43 15.41   - 3 06 03.4            "
          15.52326    9 43 14.47   - 3 05 53.0            "
          19.65104    9 40 38.59   - 2 28 24.8   15     Koishikawa
          19.67535    9 40 37.98   - 2 28 11.2            "
          29.64278    9 33 24.21   - 0 43 14.3   16     Seki
          29.66840    9 33 22.80   - 0 42 58.3            "

E. Helin, K. Lawrence, P. Rose, and R. Bambery (Palomar).
  Prediscovery 0.46-m Schmidt telescope films.
M. Koishikawa (Sendai Astronomical Observatory, Ayashi Station).
  300-mm f/2.8 telephoto lens.  Prediscovery images.
T. Seki (Geisei).

     Preliminary parabolic orbital elements by S. Nakano, Sumoto, Japan,
from 8 observations Jan. 13-29:

     T = 1991 Dec. 29.106 ET          Peri. =  74.500
                                      Node  = 144.461   1950.0
     q = 2.24936 AU                   Incl. =  77.082

     1991 ET      R.A. (1950) Decl.     Delta      r       m1
     Jan.  4     9 49.10    - 4 31.5    3.723    4.412    15.8
           9     9 46.82    - 3 57.6
          14     9 44.14    - 3 18.7    3.527    4.331    15.6
          19     9 41.07    - 2 34.6
          24     9 37.65    - 1 45.2    3.359    4.250    15.4
          29     9 33.91    - 0 50.6
     Feb.  3     9 29.89    + 0 08.9    3.221    4.169    15.2
           8     9 25.66    + 1 13.1
          13     9 21.28    + 2 21.3    3.119    4.088    15.1
          18     9 16.82    + 3 33.0
          23     9 12.36    + 4 47.4    3.055    4.008    15.0


1991 January 30                (5177)             Daniel W. E. Green

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