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IAUC 5733: 1993K; 1993J

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                                                  Circular No. 5733
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

     A. Williams, University of Western Australia; and R. Martin,
Perth Observatory, report their discovery of a possible supernova
of mag 14.5 approximately 30" east and 31" north of the nucleus of
NGC 2223 (R.A. = 6h22m.5, Decl. = -22D49', equinox 1950.0).  The
discovery was made on Mar. 28.55 UT in the course of the Perth
Observatory Research Group's automated supernova search program,
using the 0.61-m Perth-Lowell automated telescope.  The object was
reobserved on Mar. 29.5, but it had not been present on Mar. 10.5 UT.

     P. C. Schmidtke, Arizona State University, obtained BVRI images
of the field with the 0.9-m telescope at the Cerro Tololo Interamerican
Observatory, starting on Mar. 30.09 UT.  He confirmed the presence
of a star approximately 30" east and 28" north of the center of the
galaxy, quick-look photometry yielding V = 15.4, B-V = +0.2, V-R = +0.1.

     M. M. Phillips, Cerro Tololo Interamerican Observatory, reports
that J. Maza and M. Wischnjewsky, University of Chile, obtained a
low-resolution spectrum (range 320-760 nm) of the object with the CTIO
1.5-m telescope.  The spectrum is essentially featureless, suggesting
that this supernova--like 1993J--is a type II event in an early stage.

     G. Gomez, Instituto de Astrofisica de Canarias; and R. Lopez,
University of Barcelona, report: "A spectrum (range 500-850 nm,
resolution 0.3 nm) taken on Mar. 30 by E. Perez with the 2.5-m Isaac
Newton Telescope shows some similarity to the premaximum spectrum
of the type II supernova 1990E.  In particular, there is a very broad
(FWZI about 70 nm) emission band toward 650 nm that could correspond
to H alpha."

     Corrigenda.  On IAUC 5731, the names P. Pujol and B. A. Hong
should have been given as F. Pujol and H. B. Ann, respectively, and
the time of the first CCD image should have been Mar. 28.89, rather
than Mar. 29.1.

     Further visual magnitude estimates: Mar. 29.95 UT, 11.1 (F.
Garcia, Lugo, Spain); 30.84, 10.3 (P. Schmeer, Bischmisheim, Germany).

1993 March 30                  (5733)              Brian G. Marsden

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