2012CBET.3119....1D

A. J. Drake, S. G. Djorgovski, M. J. Graham, A. Mahabal, and R. Williams, California Institute of Technology; J. L. Prieto, Princeton University; 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, report the discovery of an apparent supernova in unfiltered Catalina Sky Survey (CSS) images:

---------------------------------------------------------------------------— SN 2012 UT R.A. (2000.0) Decl. Mag. Offset ---------------------------------------------------------------------------— 2012ci May 16.36 14 38 23.48 +23 20 55.1 17.6 3".0 E, 54".2 N ---------------------------------------------------------------------------—

The variable was designated PSN J14382348+2320551 when it was posted at the Central Bureau's TOCP webpage and is here designated SN 2012ci based on the spectroscopic confirmation reported below. Additional CCD magnitudes for 2012ci (unfiltered unless noted otherwise): Apr. 25.26 UT, [19.3 (CSS); May 16.965, 17.7 (Federica Luppi and Luca Buzzi, Varese, Italy; 0.38-m f/6.8 reflector; position end figures 23s.48, 55".3; reference stars from CMC-14 catalogue; nothing visible at this position in Digitized Sky Survey images; image posted at URL http://www.astrogeo.va.it/pub/TOCP/PSN_I4475.jpg); 17.026, R_c = 17.5 (Massimiliano Martignoni, Magnago, Italy, 0.25-m reflector); 18.381, 17.7 (Joseph Brimacombe, Cairns, Australia; luminance filter; position end figures 23s.51, 55".3). Brimacombe's image is posted at website URL http://www.flickr.com/photos/43846774@N02/7230679088/.