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IAUC 3865: 1983 RD

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                                                  Circular No. 3865
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
TWX 710-320-6842 ASTROGRAM CAM     Telephone 617-864-5758


1983 RD
     The following precise positions have been reported:

    1983 UT           R.A.  (1950.0)  Decl.     Mag. Observer

    Sept. 7.30347   23 45 08.65   +15 16 16.8        Shoemaker
          7.32291   23 45 19.25   +15 15 27.5          "
         12.41944    0 38 45.85   +10 39 47.0   13   Dunbar
         12.46111    0 39 12.48   +10 37 04.3          "
         13.06042    0 45 59.58   + 9 56 54.6        Helin
         13.07152    0 46 06.49   + 9 56 11.8          "
         13.25764    0 48 18.22   + 9 43 41.3        Dunbar
         13.26806    0 48 24.96   + 9 42 59.4          "
         13.33542    0 49 08.62   + 9 38 26.2          "
         13.35625    0 49 22.06   + 9 37 00.6          "
         14.32847    1 00 27.87   + 8 28 37.2          "
         14.33889    1 00 34.59   + 8 27 51.5          "
         15.58994    1 14 52.93   + 6 57 59.4   13   Gilmore
         15.60036    1 14 59.86   + 6 57 11.3          "

C. Shoemaker and E. Shoemaker (Palomar Mountain Observatory).
   0.46-m Schmidt telescope.  Measurer: C. Shoemaker.
R. S. Dunbar (Palomar Mountain Observatory).  1.2-m Schmidt
   telescope. Measurers: Dunbar and S. J. Bus.
E. Helin, J. Ciffreo and A. Maury (CERGA, Observatoire de Calern,
   Caussols, St. Vallier de Thiey).  0.9-m Schmidt telescope.
A. C. Gilmore (Mount John University Observatory).  0.25-m
   astrograph. Images slightly trailed.  Measurer: P. M. Kilmartin.

     Improved orbital elements by the undersigned:

         T = 1983 Sept. 27.2765 ET
     Peri. = 192.9749                    e =   0.476007
     Node  = 173.3843   1950.0           a =   2.045819 AU
     Incl. =   9.3723                    n =   0.3368242
         q =   1.071994 AU               P =   2.926 years

     1983 ET     R.A. (1950.0) Decl.      p        r      Mag.

     Sept.13     0 45.31    +10 02.0    0.086    1.084    13.4
          14     0 56.67    + 8 52.8
          15     1 08.11    + 7 40.5    0.084    1.081    13.4
          16     1 19.57    + 6 25.8
          17     1 30.97    + 5 09.3    0.084    1.078    13.4


1983 September 16              (3865)              Brian G. Marsden

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