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IAUC 5093: 1990k; 1990 SA

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IAUC number 

                                                  Circular No. 5093
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 HOLT-OLMSTEAD (1990k)
     E. Bowell, Lowell Observatory, reports the discovery
by Henry E. Holt and C. Michelle Olmstead of a comet on 0.46-m
Schmidt films taken by Holt, Olmstead, H. R. Holt, and J. A. Brown
at Palomar.  H. E. Holt measured, and S. J. Bus reduced, the
following positions:

     1990 UT             R.A. (1950) Decl.        m1
     Sept.14.34983    1 39 13.7    + 7 38 01     17.5
          17.42726    1 37 47.5    + 8 03 49


1990 SA
     R. H. McNaught, University of Adelaide, reports his discovery
of a fast-moving asteroidal object on U.K. Schmidt Telescope plates
taken by K. S. Russell.  McNaught observed with the Uppsala Southern
Schmidt:

     1990 UT             R.A. (1950) Decl.        V     Observer
     Sept.16.58867   23 05 05.01   - 3 51 20.9   15.5   Russell
          16.63034   23 05 05.50   - 3 55 42.7            "
          17.53346   23 05 20.69   - 5 29 29.2          McNaught
          17.56377   23 05 20.92   - 5 32 34.7          Russell
          17.58461   23 05 21.23   - 5 34 37.9            "
          17.59564   23 05 21.14   - 5 35 49.0            "
          17.60953   23 05 21.48   - 5 37 11.9            "
          18.45470   23 05 36.52   - 7 01 44.6          McNaught
          18.45959   23 05 36.57   - 7 02 09.6            "

     Preliminary orbital elements from the above observations:

     T = 1990 July  9.813 ET          Peri. = 119.185
     e = 0.54503                      Node  = 171.517   1950.0
     q = 1.14462 AU                   Incl. =  41.806
       a =  2.51578 AU     n = 0.246999     P =   3.99 years

     1990 ET      R.A. (1950) Decl.     Delta      r       V
     Sept.16    23 04.93    - 2 48.5    0.383    1.386    15.0
          21    23 06.33    -10 58.7
          26    23 07.97    -17 28.8    0.473    1.449    15.9
     Oct.  1    23 09.97    -22 28.8
           6    23 12.36    -26 14.6    0.597    1.515    16.8


1990 September 18              (5093)             Daniel W. E. Green

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