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IAUC 3448: 1979l; 1947 XC = 1979 XA

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IAUC number 

                                                  Circular No. 3448
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 (1979l)
     Further precise positions have been reported as follows:

     1980 UT             R. A. (1950) Decl.        m1    Observer
     Jan.  8.71545    16 07 34.37   -44 01 23.7          Herald
           8.71750    16 07 34.53   -44 01 31.8            "
           8.71819    16 07 34.44   -44 01 37.7            "
          10.72253    16 08 40.65   -46 07 14.9            "
          10.72302    16 08 40.84   -46 07 21.7            "
          10.72344    16 08 40.78   -46 07 22.6            "
          11.78108    16 09 45.39   -47 25 29.7    6     Jekabsons
          13.81102    16 13 12.02   -50 26 14.6    6     Candy
          14.71118    16 15 32.22   -52 03 04.9          Herald
          14.72722    16 15 34.99   -52 04 54.9            "
          17.83357    16 31 20.40   -59 37 45.7    6     Buhagiar
          21.64065    18 09 21.65   -75 26 05.6    5     Gilmore
          21.64572    18 09 52.87   -75 27 26.9            "

D. Herald (Kambah).  0.2-m camera and 0.32-m reflector.
P. Jekabsons, M. P. Candy and M. Buhagiar (Perth Observatory).
A. C. Gilmore and P. M. Kilmartin (Happy Valley, Wellington).
   0.2-m astrograph.  Very thin, faint tail 2o long in p.a. 205o.  With
   10 x 50 binoculars m1 = 4.7, coma diameter 20'.

     Further computations by the undersigned suggest that the
ephemeris on IAUC 3442-3443 is accurate to ~ 0'.5.


1947 XC = 1979 XA
     Extension of the ephemeris on IAUC 3441:

     1980 ET     R. A. (1950) Decl.     Delta     r      B
     Feb. 11    19 56.12    -16 47.4    0.404   0.637   17.0
          21    19 48.63    -18 15.1
     Mar.  2    20 00.93    -18 37.2    0.697   0.673   17.2
          12    20 21.57    -18 16.8
          22    20 43.83    -17 32.0    0.944   0.859   17.8
     Apr.  1    21 04.69    -16 36.6
          11    21 23.07    -15 40.0    1.092   1.091   18.3
          21    21 38.53    -14 49.3
     May   1    21 50.85    -14 09.4    1.152   1.324   18.7


1980 January 23                (3448)              Brian G. Marsden

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