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IAUC 5441: 1992 BC

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                                                  Circular No. 5441
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


1992 BC
     E. Helin reports the discovery of a fast-moving asteroidal
object by K. Lawrence and herself on exposures obtained with the
assistance also of P. Rose and C. Brewer with the 0.46-m Palomar
Schmidt telescope.  The following measurements are by Rose:

     1992 UT             R.A. (2000) Decl.       Mag.
     Jan. 29.38924    9 21 43.85   +28 36 03.5   16.5
          30.36823    9 24 18.74   +30 46 42.1
          30.50072    9 24 37.60   +31 04 56.4
          31.38299    9 27 15.77   +33 10 36.9   16.5
          31.50139    9 27 35.03   +33 27 43.1

     Preliminary orbital elements by B. G. Marsden:

     T = 1992 Mar. 31.717 TT          Peri. =  76.604
     e = 0.36223                      Node  = 123.603   2000.0
     q = 0.92114 AU                   Incl. =  14.759
       a =  1.44433 AU     n = 0.567814     P =   1.74 years

1992 TT     R. A. (2000) Decl.     Delta,     r    Elong. Phase      V
Jan. 29     9 20.78    +27 46.3    0.140    1.122  167.1   11.3     15.7
     30     9 23.32    +29 56.6    0.135    1.117  165.4   12.8     15.7
     31     9 26.12    +32 15.2    0.131    1.111  163.4   14.6     15.6
Feb.  1     9 29.24    +34 42.1    0.127    1.106  161.1   16.8     15.6
      2     9 32.73    +37 17.2    0.123    1.101  158.5   19.1     15.6
      3     9 36.67    +40 00.2    0.120    1.096  155.7   21.7     15.6
      4     9 41.15    +42 50.6    0.117    1.091  152.7   24.5     15.7
      5     9 46.28    +45 47.7    0.114    1.086  149.5   27.4     15.7
      6     9 52.22    +48 50.5    0.112    1.081  146.2   30.5     15.7
      7     9 59.15    +51 57.5    0.110    1.076  142.8   33.7     15.8
      8    10 07.34    +55 07.2    0.109    1.071  139.3   36.9     15.8
      9    10 17.12    +58 17.4    0.108    1.066  135.7   40.3     15.9
     10    10 28.95    +61 26.0    0.107    1.061  132.1   43.6     16.0
     11    10 43.46    +64 30.0    0.107    1.057  128.5   47.0     16.0
     12    11 01.48    +67 26.1    0.107    1.052  124.9   50.3     16.1
     13    11 24.1     +70 10.3    0.107    1.047  121.4   53.6     16.2


1992 January 31                (5441)             Daniel W. E. Green

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