Electronic Telegram No. 3111

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 2012cg IN NGC 4424

Further to CBET 3105, M. Kandrashoff, S. B. Cenko, W. Li, and A. V.
Filippenko report the LOSS discovery of an apparent supernova on unfiltered
KAIT images:

 SN       2012 UT       R.A. (2000.0) Decl.      Mag.      Offset
 2012cg   May 17.22   12 27 12.83  + 9 25 13.2   16.9    17".3 E, 1".5 S

Additional KAIT magnitudes for 2012cg in NGC 4424 (unfiltered unless noted otherwise):  May 12.30 UT, [18.5 (KAIT);
14.87, [19.0 (G. Cortini, Predappio, Italy; Celestron C14 telescope +
Starlight X-Press SXVR H9 camera); 17.26, 16.8 (KAIT); 18.332, 14.9 (Joseph
Brimacombe, Cairns, Australia; luminance filter; position end figures 12s.84,
13".1; image posted at http://www.flickr.com/photos/43846774@N02/7225356298/);
18.840, R_c = 15.1 (Massimiliano Martignoni, Magnago, Italy; 0.25-m f/10
reflector; position end figures 12s.82, 12".9); 18.89, 15.2 (Cortini);
18.975, 14.9 (Federica Luppi and Luca Buzzi, Varese, Italy; 0.38-m f/6.8
reflector; position end figures 12s.84, 13".1; reference stars from CMC-14
catalogue; image posted at http://www.astrogeo.va.it/pub/TOCP/PSN_N4424.jpg). 

Host galaxy info: vel= 437 km/s ; 3.6' x 1.8'; 12.34mag; SB(s)a

SN type info: Ia

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