Electronic Telegram No. 1683
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html


SUPERNOVA 2009W
     Further to CBETs 1681 and 1682, A. J. Drake, A. Mahabal, S. G. Djorgovski,
R. Williams, and M. J. Graham, California Institute of Technology; M. Catelan,
Pontificia Universidad Catolica; E. C. Beshore, S. M. Larson, and R. Hill,
Lunar and Planetary Laboratory, University of Arizona; and E. Christensen,
Gemini Observatory, report the CRTS discovery of an apparent supernova in
unfiltered Catalina Sky Survey (CSS) images:

 SN       2009 UT       R.A. (2000.0) Decl.      Mag.      Offset
 2009W    Feb. 2.55   16 23 45.60  +11 44 07.0   17.9    17".5 W, 16".2 S

The host galaxy, SDSS J162346.79+114423.2, has Gunn magnitudes u = 19.0,
g = 17.5, r = 17.1, i = 16.9, and z = 16.8, and redshift z = 0.017.  Further
magnitudes for 2009W:  2008 Sept. 28.13 UT, [20.2 (CSS); 2009 Feb. 3.45, g =
18.6, r = 18.0, i = 18.1 (Palomar 1.52-m telescope + Gunn filters).


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2009 CBAT
2009 February 5                  (CBET 1683)              Daniel W. E. Green