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IAUC 5055: 1990i

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                                                  Circular No. 5055
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 TSUCHIYA-KIUCHI (1990i)
     The following additional precise positions have been reported:

     1990 UT             R.A. (1950) Decl.        m1    Observer
     July 17.50590   12 22 39.81   +29 36 08.2    9     Koishikawa
          17.51667   12 22 38.67   +29 35 51.4            "
          18.09282   12 21 25.94   +29 21 54.4          McCrosky
          18.09755   12 21 25.42   +29 21 47.3            "
          18.24208   12 21 07.18   +29 18 15.2          Balam
          18.24764   12 21 06.72   +29 18 10.1            "
          18.25632   12 21 05.64   +29 17 58.1            "
          19.06980   12 19 26.4    +28 58 21            McCrosky
          19.07434   12 19 26.0    +28 58 15              "
          19.24660   12 19 05.16   +28 54 05.0          Balam
          19.25285   12 19 04.53   +28 53 56.5            "
          19.26118   12 19 03.39   +28 53 44.8            "

M. Koishikawa (Sendai Astronomical Observatory, Ayashi Station).
   0.15-m f/5.5 reflector.  Communicated by H. Kosai.
R. E. McCrosky and C.-Y. Shao (Oak Ridge Observatory).  1.5-m reflector
   + CCD.  Only two reference stars on July 19.
D. D. Balam and J. B. Tatum (Climenhaga Observatory, Victoria).

     Preliminary parabolic elements from 11 observations July 13-19:

     T = 1990 Sept.28.648 ET          Peri. = 180.830
                                      Node  = 330.059   1950.0
     q = 1.09430 AU                   Incl. = 143.758

     1990 ET      R.A. (1950) Decl.     Delta      r       m1
     July  8    12 46.56    +33 30.9    1.667    1.697     8.9
          13    12 33.00    +31 26.7
          18    12 21.63    +29 24.2    1.787    1.587     8.8
          23    12 12.06    +27 25.2
          28    12 03.96    +25 30.6    1.904    1.482     8.6
     Aug.  2    11 57.03    +23 40.7
           7    11 51.03    +21 55.2    2.007    1.384     8.4
          12    11 45.77    +20 13.7
          17    11 41.08    +18 35.6    2.085    1.294     8.2


1990 July 19                   (5055)             Daniel W. E. Green

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