2012CBET.3152....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; and S. M. Larson and E. Christensen, Lunar and Planetary Laboratory, University of Arizona, report the discovery of an apparent supernova in unfiltered Catalina Sky Survey (CSS) images:

---------------------------------------------------------------------------— SN 2012 UT R.A. (2000.0) Decl. Mag. Offset ---------------------------------------------------------------------------— 2012da June 18.24 13 02 33.66 +27 26 11.3 16.8 20".2 W, 10".7 S ---------------------------------------------------------------------------—

The variable was designated PSN J13023366+2726113 when it was posted at the Central Bureau's TOCP webpage and is here designated SN 2012da based on the spectroscopic confirmation reported below. Additional CCD magnitudes for 2012da: June 10.19 UT, [19.5 (CSS); 18.953, 16.4 (Nick James, Chelmsford, Essex, England; C11 telescope + ST9XE camera); 19.185, 16.5 (Joseph Brimacombe, Cairns, Australia, remotely using a 51-cm RCOS reflector + STL11K camera at the New Mexico Skies Observatory near Mayhill, NM, U.S.A.; luminance filter presumed; position end figures 33s.56, 12".2; image posted at website URL http://www.flickr.com/photos/43846774@N02/7404022044/).