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IAUC 4832: 1989 OB

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                                                  Circular No. 4832
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 OB
     Further precise positions have been reported as follows:

     1989 UT             R.A. (1950) Decl.       Mag.   Observer
     July  7.40052   21 15 53.07   -13 16 39.8   18.5   Shoemaker
           7.43438   21 15 54.20   -13 16 01.7            "
          31.39844   21 25 30.20   - 3 27 19.9            "
     Aug.  1.41302   21 25 39.46   - 2 55 43.1            "
           2.37204   21 25 48.14   - 2 25 19.7            "
           3.56106   21 25 58.05   - 1 46 31.2          McNaught
           3.56389   21 25 58.01   - 1 46 26.3            "
           3.56771   21 25 58.02   - 1 46 17.7            "

C. S. Shoemaker, E. M. Shoemaker and H. E. Holt (Palomar).
R. H. McNaught (Siding Spring).  Uppsala Southern Schmidt.

     Improved orbital elements from 12 observations July 7-Aug. 3:

     T = 1989 Sept.27.1378 ET         Peri. =  71.3019
     e = 0.556845                     Node  = 289.5003  1950.0
     q = 1.204962 AU                  Incl. =   7.9504
       a =  2.719053 AU    n = 0.2198253    P =   4.484 years

     1989 ET      R.A. (1950) Decl.     Delta      r       V
     Aug.  2    21 25.75    - 2 37.0    0.364    1.366    15.7
           7    21 26.33    + 0 08.5
          12    21 26.75    + 3 06.4    0.316    1.317    15.3
          17    21 27.23    + 6 14.8
          22    21 27.98    + 9 30.4    0.282    1.276    15.1
          27    21 29.25    +12 48.7
     Sept. 1    21 31.33    +16 04.8    0.261    1.243    15.0
           6    21 34.53    +19 13.8
          11    21 39.14    +22 11.2    0.251    1.220    15.1
          16    21 45.34    +24 53.2
          21    21 53.26    +27 16.3    0.251    1.207    15.1
          26    22 02.92    +29 17.5
     Oct.  1    22 14.32    +30 55.0    0.258    1.206    15.2
           6    22 27.34    +32 08.2
          11    22 41.73    +32 57.2    0.274    1.216    15.3
          16    22 57.15    +33 23.0
          21    23 13.23    +33 27.2    0.298    1.237    15.5


1989 August 11                 (4832)              Brian G. Marsden

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