Electronic Telegram No. 2161
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
CBAT Director:  Daniel W. E. Green; Room 209; Dept. of Earth and Planetary
 Sciences; Harvard University; 20 Oxford St.; Cambridge, MA  02138; U.S.A.
e-mail:  cbat@cfa.harvard.edu; dwe_green@eps.harvard.edu
URL http://www.cfa.harvard.edu/iau/cbat.html


SUPERNOVA 2010U IN NGC 4214
     S. Nakano, Sumoto, Japan, reports the discovery by Koichi Itagaki
(Teppo-cho, Yamagata, Japan) of an apparent supernova (mag 16.0) on a 20-s
unfiltered CCD frame taken on Feb. 5.634 UT using a 0.30-m f/7.8 reflector
(+ Bitran BT-214E camera) at the Takanezawa station, Tochigi-ken; Itagaki
confirmed the new object at mag 15.9 on Feb. 6.568.  SN 2010U is located at
R.A. = 12h15m41s.06, Decl. = +36d20'02".9 (equinox 2000.0), which is 20"
east and 27" north of the center of NGC 4214.  Nothing is visible at this
position on Itagaki's image from Jan. 24.74 (limiting mag 18.0) or on the
Digitized Sky Survey.  His discovery image is posted at the following
website URL:  http://www.k-itagaki.jp/images/psn-4214.jpg.  Nakano also
notes that confirming unfiltered 120-s exposures (limiting mag 19.4-19.5)
were taken by K. Kadota (Ageo, Japan, 0.25-m f/5 reflector + SBIG ST-9E
CCD camera), yielding mag 16.3 on Feb. 5.710 and 6.664, with position end
figures 41s.07 +/- 0s.01, 02".4 +/- 0".2 for 2010U.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2010 CBAT
2010 February 6                  (CBET 2161)              Daniel W. E. Green