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IAUC 5510: 1992 JB; 4U 1543-47

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                                                  Circular No. 5510
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@CFA or GREEN@CFA (.SPAN, .BITNET or .HARVARD.EDU)


1992 JB
     E. F. Helin reports the discovery of a fast-moving asteroidal
object by J. Alu and K. Lawrence on films taken by Alu, Lawrence,
P. Rose, and R. Bambery with the 0.46-m Palomar Schmidt telescope:

     1992 UT             R.A. (2000) Decl.       Mag.
     May   1.38437   15 23 11.51   - 8 30 14.2   14.5
           1.40677   15 23 11.95   - 8 27 42.3
           2.43333   15 23 58.74   - 6 35 36.6
           3.26424   15 24 37.01   - 5 10 55.4

     Preliminary orbital elements by G. V. Williams:

     T = 1992 Mar.  6.964 TT          Peri. = 305.849
     e = 0.32041                      Node  = 218.423   2000.0
     q = 0.99417 AU                   Incl. =  14.710
       a =  1.46290 AU     n = 0.557037     P =   1.77 years

1992 TT     R. A. (2000) Decl.     Delta      r    Elong. Phase      V
Apr. 28    15 19.77    -15 43.0    0.105    1.109  166.2   12.5     13.6
May   3    15 24.41    - 5 36.6    0.125    1.130  165.5   12.9     14.0
      8    15 26.98    + 1 21.8    0.149    1.151  160.4   17.1     14.6
     13    15 28.53    + 6 03.8    0.176    1.173  155.4   21.0     15.1
     18    15 29.61    + 9 10.3    0.205    1.195  151.1   24.1     15.6
     23    15 30.54    +11 09.3    0.237    1.219  147.4   26.6     16.0
     28    15 31.56    +12 19.4    0.270    1.242  144.1   28.6     16.4
June  2    15 32.84    +12 53.2    0.305    1.266  141.1   30.2     16.7
      7    15 34.53    +12 59.8    0.341    1.290  138.3   31.5     17.1


4U 1543-47
     B. A. Harmon, R. B. Wilson, M. H. Finger, W. S. Paciesas, B. C.
Rubin, and G. J. Fishman, NASA/Marshall Space Flight Center, report,
on behalf of the BATSE-Compton Gamma Ray Observatory Experiment
Team:  "Hard x-ray flux from the recurrent x-ray nova 4U 1543-47
has been monitored using earth occultation since Apr. 18.  Maximum
flux between 20 and 230 keV was detected on Apr. 20 (IAUC 5504),
and as of Apr. 25 the flux had dropped below the BATSE instrument
one-day sensitivity level.  Monitoring of the source is continuing."


1992 May 4                     (5510)            Daniel W. E. Green

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