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IAUC 5656: 1992bj; HR 1469; N LMC 1992

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                                                  Circular No. 5656
Central Bureau for Astronomical Telegrams
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

     C. Pollas, Observatoire de la Cote d'Azur, reports his discovery,
on films taken Oct. 17.90 and 18.93 UT, of a supernova (mag
about 19.5-20) located about 0".1 west and 4".9 north of the
nucleus of a galaxy of mag about 18 (R.A. = 23h19m21s.8, Decl.
= +24 53'02", equinox 1950.0), near SAO 91205.  The supernova's
position has end figures 22s.42, 06".4.  Nothing is visible at this
location on a Technical Pan plate from 1990 or on the prints of the
Palomar Sky Survey.
   A. V. Filippenko, T. Matheson, and L. C. Ho, University of
California at Berkeley, report that CCD spectra (range 320-1000 nm)
obtained on Nov. 18 UT with the Shane 3-m reflector at Lick Observatory
reveal that this object is a supernova of type II.  Prominent
H-alpha having a P-Cyg profile is present.  The redshift of the
parent galaxy is roughly 0.056, measured from the narrow H-alpha
emission of the superposed H II region.  Additional photometry and
spectroscopy would be useful in order to determine the distance to
the supernova with the expanding photosphere method.

HR 1469
     A. Bradley, Hubble Space Telescope (HST) Operations, Goddard
Space Flight Center; and D. Hoffleit and I. Platais, Department of
Astronomy, Yale University, report:  "During the routine operation
of the HST Fixed Head Star Trackers on Nov. 4.642 UT, a considerable
fade in brightness, to mag 6.9 for at least 3 hr, was noticed
of the star HR 1469 = 49 Eri = NSV 1671 (normally at V = 5.31).
Cousins (1963, MNASSA 22, 12) reported on possible variability of
0.08 mag, but the large decrease in brightness observed by the FHST
has not been recorded before, to our knowledge.  To investigate in
more detail the nature of the light variability in HR 1469, we
would encourage professional and amateur astronomers to monitor for
the possible light change as well as to check the photographic
plates for other minima in the past."

     Visual magnitude estimates:  Nov. 13.460 UT, 10.2 (P.
Camilleri, Cobram, Victoria, Australia); 13.854, 10.7 (J. Hers,
Sedgefield, South Africa); 14.078, 10.65 (W. Liller, Vina del Mar,
Chile; CCD); 14.597, 10.7 (Camilleri); 14.826, 10.9 (Hers); 15.204,
10.87 (Liller; CCD); 15.451, 11.0 (Camilleri); 16.144, 11.33
(Liller; CCD); 16.475, 11.5 (Camilleri).

1992 November 18               (5656)            Daniel W. E. Green

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