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IAUC 3473: 1980d; NOTICE TO SUBSCRIBERS

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                                                  Circular No. 3473
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


PERIODIC COMET WILD 3 (1980d)
     Paul Wild, Astronomical Institute, Berne University, reports
his discovery of a comet on exposures with the 0.4-m Schmidt
telescope at Zimmerwald as follows:

     1980 UT             R. A. (1950) Decl.         m1
     Apr. 11.07708    13 30 57.71   +12 28 25.3    15.5
          11.94201    13 30 14.28   +12 29 26.8
          12.90417    13 29 25.51   +12 30 22.8
     May   7.86337    13 10 01.95   +11 36 05.5    15.5
           7.90104    13 10 00.44   +11 35 53.1

The object is diffuse, evidently with a rather strong central
condensation; no tail was reported.

     Computations by the discoverer, and also by the undersigned,
show that this is a short-period comet.  The following orbit, by
the undersigned, indicates that the comet passed 0.13 AU from
Jupiter in 1976 Aug.  Before then q = 4.2 AU, e = 0.12, P = 10.3 years.

       T = 1980 Oct. 6.301 ET
   Peri. = 179.543                    e =   0.36674
   Node  =  71.851   1950.0           a =   3.62518 AU
   Incl. =  15.529                    n =   0.142794
       q =   2.29567 AU               P =   6.90 years

     1980 ET     R. A. (1950) Decl.     Delta     r      m1
     May  11    13 08.21    +11 18.4
          21    13 03.92    +10 07.3    1.711   2.478   15.6
          31    13 02.13    + 8 36.8
     June 10    13 02.71    + 6 51.1    1.857   2.432   15.7


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1980 May 9                     (3473)              Brian G. Marsden

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