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IAUC 3287: 1978o; U Gem

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                                                  Circular No. 3287
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 BRADFIELD (1978o)
     D. Herald, Kambah, near Canberra, provides the following
precise positions. obtained with a 31-cm reflector:

     1978 UT             R. A. (1950) Decl.
     Oct. 11.75479    11 02 46.68   -20 36 54.3
          11.75771    11 02 47.11   -20 37 01.8
          12.75056    11 04 23.89   -22 13 15.1
          12.76632    11 04 25.33   -22 14 55.3
          13.75743    11 06 28.99   -23 58 47.8
          13.76444    11 06 30.38   -23 59 35.4

     The following parabolic orbital elements have been calculated.
The ephemeris is from the second set.

                 D. Herald             B. G. Marsden
             (3 obs. Oct. 11-13)    (6 obs. Oct 11-13)
           T = 1978 Sept 28.622     1978 Sept. 29.198 ET
       Peri. = 239.92               240.535
       Node  = 358.86               357.422   1950.0
       Incl. = 138.38               138.233
           q = 0.4221                 0.43408 AU

     1978 ET     R. A. (1950) Decl.     Delta     r      m1
     Oct. 19    11 28.36    -35 59.4    0.559   0.658    8.4
          21    11 45.04    -42 09.9
          23    12 10.98    -49 15.5    0.461   0.730    8.5
          25    12 53.29    -56 50.3
          27    14 04.27    -63 36.0    0.411   0.803    8.6
          29    15 50.92    -67 02.2
          31    17 41.47    -65 22.0    0.422   0.877    9.1
     Nov.  2    18 58.38    -60 16.0
           4    19 44.91    -54 15.7    0.490   0.950    9.7
           6    20 13.88    -48 35.7
           8    20 33.17    -43 38.4    0.593   1.024   10.5


U GEMINORUM
    J. Mattei, American Association of Variable Star Observers,
communicates the following magnitude estimates by J. Morgan, Prescott,
AZ: Oct. 12.52 UT, 14; 13.51, 10.3; 14.52, 9.8.


1978 October 16                (3287)              Brian G. Marsden

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