Electronic Telegram No. 2627

Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION CBAT Director: Daniel W. E. Green; Hoffman Lab 209; Harvard University; 20 Oxford St.; Cambridge, MA 02138; U.S.A. e-mail: cbatiau@eps.harvard.edu (alternate cbat@iau.org) URL http://www.cbat.eps.harvard.edu/index.html Prepared using the Tamkin Foundation Computer Network

SUPERNOVA 2011D IN UGC 2498

     Further to CBET 2596, A. Narla, S. B. Cenko, W. Li, and A. V. Filippenko
report the Lick Observatory Supernova Search discovery of an apparent
supernova on unfiltered KAIT images, as tabulated below.  An independent
discovery was later reported by the CRTS group (cf. CBET 2619; S. Howerton,
Arkansas City, KS, U.S.A.; A. J. Drake, S. G. Djorgovski, A. Mahabal, M. J.
Graham, and R. Williams, California Institute of Technology; J. L. Prieto,
Carnegie Observatories; M. Catelan, Pontificia Universidad Catolica de Chile;
E. C. Beshore and S. M. Larson, Lunar and Planetary Laboratory, University of
Arizona; and E. Christensen, Gemini Observatory) via public images from the
Catalina Sky Survey (CSS).

 2011 UT        R.A. (2000.0) Decl.     Mag.      Offset            Observers
 Jan. 5.09    3 02 14.58  +17 20 58.9   18.2   33".8 E, 14".7 N     CSS
 Jan. 6.30    3 02 14.53  +17 20 58.3   18.2   34".4 E, 14".8 N     KAIT

Additional magnitudes for 2011D:  2010 Dec. 8.32 UT, [19.3 (KAIT); 10.19,
[19.4 (CSS); 2011 Jan. 7.21, 18.2 (KAIT); 8.13, 17.8 (S. Howerton, remotely
with the LB-1 0.6-m telescope near Rodeo, NM, U.S.A.).  Drake notes that the
presumed host galaxy, UGC 2498, has redshift z = 0.0231.

Host galaxy info: vel= 6933 km/s ; 1.6' x 0.7'; 15.13mag; SABcd

SN type info: IIb

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