Electronic Telegram No. 2102
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 2009nk IN NGC 5491
     S. Nakano, Sumoto, Japan, reports the discovery by Koichi Itagaki
(Teppo-cho, Yamagata, Japan) of an apparent supernova (mag 17.0) on multiple
15-s unfiltered CCD frames (limiting magnitude 19.0) taken on Dec. 29.865 UT
using a 0.60-m f/5.7 reflector.  The new object is located at R.A. =
14h10m58s.72, Decl. = +6d21'47".9 (equinox 2000.0), which is 20" east and
6" south of the center of NGC 5491.  Nothing is visible at this position on
the Digitized Sky Survey or on Itagaki's image taken on 2005 May 3 UT
(limiting magnitude 19.0).  The discovery image has been posted at website
URL http://www.k-itagaki.jp/images/psn5491.jpg.  Nakano adds that sixteen
180-s unfiltered CCD frames (limiting mag 18.8) taken by K. Kadota (Ageo,
Japan, 0.25-m f/5 reflector) on Dec. 30.80 in strong moonlight were co-added
to yield mag 17.2 and position end figures 58s.77, 47".8 for 2009nk.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2009 CBAT
2009 December 30                 (CBET 2102)              Daniel W. E. Green