[IAUC] CBET 2065: 20091205 : SUPERNOVA 2009md IN NGC 3389

Sab Dic 5 21:09:05 ART 2009

                                                  Electronic Telegram No. 2065
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS en CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT en CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html


SUPERNOVA 2009md IN NGC 3389
     S. Nakano, Sumoto, Japan, reports the discovery by Koichi Itagaki
(Teppo-cho, Yamagata, Japan) of an apparent supernova (mag 16.5) on numerous
15-s unfiltered CCD frames (limiting magnitude 19.0) exposed on Dec. 4.81 UT
using a 0.60-m f/5.7 reflector.  The new object is located at R.A. =
10h48m26s.28, Decl. = +12o32'02".8 (equinox 2000.0), which is 24" west and
3" north of the center of NGC 3389.  Nothing is visible at this position on
the Digitized Sky Survey and on Itagaki's many past frames (including one
from 2001 Mar. 21 with limiting mag 18.5), the most recent frame having been
taken on 2009 Nov. 7.72 (limiting mag 18.0).  Itagaki's discovery image has
is posted at website URL http://k-itagaki.jp/images/psn-3389.jpg.  Nakano also
reports that T. Yusa (Osaki, Miyagi-ken, Japan) has confirmed the appearance
of 2009md on ten co-added 60-s unfiltered CCD frames (limiting mag 18.0)
taken remotely using a 0.25-m f/3.4 reflector near Mayhill, NM, U.S.A. on
Dec. 5.38, yielding mag 16.7 and position end figures 26s.29, 03".0 for the
new object.  K. Kadota (Ageo, Japan; also via Nakano) reports that twelve
co-added 120-s unfiltered CCD frames (limiting mag 19.2) taken on Dec. 5.73
using a 0.25-m f/5 reflector yields mag 16.8 and position end figures
26s.30, 02".6 for 2009md.  The 13th-magnitude supernova 1967C also appeared
in NGC 3389.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2009 CBAT
2009 December 5                  (CBET 2065)              Daniel W. E. Green