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IAUC 5917: GRO J0422+32; 1993aj; 1993s

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                                                  Circular No. 5917
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)


GRO J0422+32
     E. L. Martin and M. Serra-Ricart, Instituto de Astrofisica de
Canarias, report:  "The x-ray transient GRO J0422+32, a possible
black-hole binary, is currently returning to its quiescent state.
CCD observations at the Teide Observatory 0.80-m IAC telescope give
the following magnitudes in the R band:  1993 Nov. 27.25 UT, 18.5;
Dec. 14.02, 14.9; 15.97, 15.0; 17.03, 15.0; 18.12, 15.2; 1994 Jan.
4.11, 18.0; 4.98, 18.9.  The last two nights of data show that the
object has rapidly faded by more than 3 mag and indicate that this
outburst (IAUC 5901) has been short-lived (duration < 40 days, as
with that of August 1993; IAUC 5842)."


SUPERNOVA 1993aj IN ANONYMOUS GALAXY
     A. V. Filippenko and T. Matheson, University of California at
Berkeley, report that an uncalibrated CCD spectrogram (range 310-
1000 nm) obtained on Jan. 7 UT with the 3-m Shane reflector at Lick
Observatory suggests that this object (IAUC 5915) is a type-II
supernova, within a few weeks of maximum brightness.  Broad hydrogen
Balmer lines with P-Cyg profiles are visible.


PERIODIC COMET MUELLER 5 (1993s)
     Improved orbital elements from MPEC 1994-A04:

1994 TT     R. A. (2000) Decl.   Delta     r    Elong. Phase    m1
Jan.  8     6 34.53   +22 59.2   3.405   4.378  170.4    2.2   17.6
     18     6 28.67   +23 29.6   3.436   4.368  158.8    4.7   17.6
     28     6 23.69   +23 58.0   3.495   4.358  147.5    7.0   17.6
Feb.  7     6 20.02   +24 23.8   3.580   4.349  136.5    9.0   17.7
     17     6 17.92   +24 47.0   3.686   4.340  125.9   10.6   17.7
     27     6 17.55   +25 07.7   3.808   4.331  115.7   11.9   17.8
Mar.  9     6 18.91   +25 26.0   3.942   4.323  106.0   12.8   17.8
     19     6 21.96   +25 41.9   4.084   4.315   96.7   13.2   17.9
     29     6 26.58   +25 55.3   4.228   4.307   87.8   13.4   18.0


1994 January 7                 (5917)            Daniel W. E. Green

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