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IAUC 4887: 1989 UP

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                                                Circular No. 4887
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


1989 UP
     D. L. Rabinowitz and J. V. Scotti, University of Arizona,
report their discovery of a fast-moving asteroidal object.  The
following positions have been reported:

     1989 UT             R.A. (1950) Decl.        V     Observer
     Oct. 27.53229    4 17.20      - 0 06.2      15.5   Rabinowitz
          27.54190    4 17.35      - 0 05.5               "
          27.70139    4 19 51.81   + 0 06 54.6          McNaught
          27.70341    4 19 53.60   + 0 07 02.7            "
          27.70624    4 19 56.03   + 0 07 14.0            "
          28.31447    4 29.52      + 0 45.6             Rabinowitz
          28.43802    4 31 29.52   + 0 54 33.7          Helin
          28.47361    4 32 01.38   + 0 56 59.6            "
          29.32844    4 46.57      + 1 59.8      15.8   Rabinowitz
          29.40394    4 47.82      + 2 05.6      16.2     "
          30.28916    5 03.96      + 3 15.4               "

D. L. Rabinowitz and J. V. Scotti (Kitt Peak).  0.91-m Spacewatch
  Telescope + 2048x2048 CCD.  Rough preliminary measures.
R. H. McNaught (Siding Spring).  Uppsala Southern Schmidt telescope.
E. F. Helin, B. Roman, J. Alu, K. Lawrence (Palomar).  0.46-m
  Schmidt telescope films.  Measured by Alu.

     Preliminary orbital elements from 7 observations, Oct. 27-30:

     T = 1989 Nov. 26.439 ET          Peri. =  17.449
     e = 0.46411                      Node  =  52.698   1950.0
     q = 0.98184 AU                   Incl. =   3.824
       a =  1.83217 AU     n = 0.397425     P =   2.48 years

     1989 ET      R.A. (1950) Decl.     Delta      r       V
     Oct. 31     5 17.41    + 4 15.5    0.051    1.030    15.1
     Nov.  1     5 37.46    + 5 41.1
           2     5 58.41    + 7 08.2    0.049    1.023    15.2
           3     6 19.96    + 8 34.2
           4     6 41.76    + 9 56.8    0.049    1.017    15.4
           5     7 03.42    +11 13.6
           6     7 24.57    +12 22.8    0.050    1.011    15.6


1989 October 30                (4887)             Daniel W. E. Green

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