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IAUC 5442: 1992b; 1992 AC

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                                                  Circular No. 5442
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Telephone 617-495-7244/7440/7444 (for emergency use only)
TWX 710-320-6842 ASTROGRAM CAM     EASYLINK 62794505
MARSDEN or GREEN@CFA.BITNET    MARSDEN or GREEN@CFAPS2.SPAN


COMET BRADFIELD (1992b)
     R. H. McNaught, Siding Spring Observatory, reports that William
A. Bradfield, Dernancourt, near Adelaide, has discovered a comet,
described to be diffuse without condensation.  Confirmatory CCD images
were obtained (through cirrus clouds) by S. D. Ryder and McNaught with
the Siding Spring 1.0-m reflector; the Feb. 2 measurements below
are by McNaught:

     1992 UT             R.A. (2000) Decl.       m1   Observer
     Jan. 31.736     16 07         -41 33        10   Bradfield
     Feb.  1.767     16 15.2       -41 46                "
           2.67413   16 22 20.97   -41 52 47.6        Ryder
           2.67926   16 22 23.36   -41 52 50.5          "
           2.68400   16 22 25.73   -41 52 48.5          "
           2.76037   16 23 03.19   -41 53 35.2          "


1992 AC
     Improved orbital elements from MPC 19522:

                    Epoch = 1992 June 27.0 TT
     T = 1992 Feb. 16.4449 TT         Peri. =  25.1210
     e = 0.421546                     Node  = 121.8251  2000.0
     q = 1.217116 AU                  Incl. =  16.0614
       a =  2.104084 AU    n = 0.3229308    P =   3.052 years

1992 TT    R. A. (2000) Decl.     Delta     r    Elong. Phase    V
Jan. 29    9 43.01    +26 40.1    0.254   1.231  163.8   12.9   11.8
Feb.  3    9 55.35    +32 07.8    0.250   1.225  160.7   15.4   11.9
      8   10 08.48    +37 21.8    0.251   1.220  155.8   19.4   12.0
     13   10 22.28    +42 03.8    0.257   1.218  150.4   23.6   12.2
     18   10 36.47    +46 01.4    0.267   1.217  145.2   27.6   12.4
     23   10 50.64    +49 09.4    0.280   1.219  140.5   31.0   12.6
     28   11 04.33    +51 27.9    0.296   1.223  136.6   33.8   12.8
Mar.  4   11 17.15    +52 59.7    0.314   1.229  133.3   36.0   13.0
      9   11 28.84    +53 49.9    0.334   1.236  130.6   37.6   13.2
     14   11 39.32    +54 03.9    0.355   1.246  128.4   38.7   13.4
     19   11 48.58    +53 47.2    0.377   1.258  126.7   39.4   13.5


1992 February 2                (5442)             Daniel W. E. Green

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