[IAUC] CBET 847: 20070218 : SUPERNOVA 2007Z IN PGC 16993

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                                                  Electronic Telegram No. 847
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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SUPERNOVA 2007Z IN PGC 16993
     E. J. Christensen, Lunar and Planetary Laboratory, reports his
discovery of an apparent supernova (mag approximately 17.5) on four
unfiltered CCD images obtained with the Mt. Lemmon Survey 1.5-m
telescope on Feb. 17.221-17.237 UT.  The new object is located at
R.A. = 5h15m42s.68, Decl. = +19o21'49".5 (equinox 2000.0), which is
10".4 west and 2".7 north of the center of the apparent host galaxy
(which itself has position end figures 43s.42, 46".8).  Nothing is
visible at this position on survey images from Jan. 25 (limiting mag
approximately 21.5) or on a Digitized Sky Survey image.  Following
posting of this object at the Central Bureau's unconfirmed-objects
webpage, H. Naito (Nishi-Harima Astronomical Observatory) and H.
Yamaoka (Kyushu University) report that a confirming image was
obtained by Naito on Feb. 18.423 with the 2.0-m NAYUTA telescope (+
MINT with R-band filter), showing 2007Z at mag about 17.5.


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                         (C) Copyright 2007 CBAT
2007 February 18                 (CBET 847)               Daniel W. E. Green