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IAUC 3592: 1981c; 1981 FD

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IAUC number 

                                                  Circular No. 3592
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


COMET ELIAS (1981c)
     Jonathan H. Elias, Cerro Tololo Interamerican Observatory, reports
his discovery of a comet as shown below.  The object is diffuse
with neither condensation nor tail.

     1981 UT          R. A. (1950) Decl.    m1
     Apr.  3.02      11 19.5     -77 10     15
           4.14      11 15.5     -76 54


1981 FD
     E. Bowell, Lowell Observatory, reports his discovery of an unusual
minor planet near Jupiter   Precise positions are as follows:

     1981 UT             R. A. (1950) Decl.       Mag.   Observer
     Mar. 30.27153    12 11 58.00   + 0 09 38.0   16.8   Bowell
          30.31736    12 11 56.39   + 0 09 36.8            "
     Apr.  1.21181    12 10 58.74   + 0 09 12.3   17.0     "
           1.25069    12 10 57.46   + 0 09 11.4            "
           5.23611    12 09 05.89   + 0 07 18.1   16.8     "
           9.20556    12 07 32.16   + 0 03 45.6   17.2     "
           9.24097    12 07 31.36   + 0 03 44.0            "
          11.12212    12 06 54.63   + 0 01 26.5   17     McCrosky
          11.17723    12 06 53.50   + 0 01 21.4            "

E. Bowell and B. A. Skiff (Anderson Mesa Station).  0.33-m photographic
   telescope.  Position uncertain on Apr. 5.
R. E. McCrosky (Agassiz Station).  Measurer: C.-Y. Shao.

     Computations by Bowell and by the undersigned suggest that
this is a minor planet of Griqua type (2:1 Jupiter librator).  Approximate
orbital elements: T = 1981 Feb. 1, Peri. = 137o, Node = 19o, Incl. =
2o.6, q = 1.70 AU, e = 0.49, a = 3.33 AU.  An ephemeris follows:

     1981 ET     R. A. (1950) Decl.     Delta     r     Mag.
     Apr. 16    12 05.73    - 0 06.6
          26    12 05.35    - 0 33.4    0.935   1.858   18.1
     May   6    12 07.80    - 1 14.0
          16    12 12.97    - 2 07.5    1.131   1.936   18.8
          26    12 20.46    - 3 11.9
     June  5    12 29.89    - 4 25.0    1.376   2.023   19.3


1981 April 16                  (3592)              Brian G. Marsden

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