2012CBET.3265....1H

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, Princeton University; M. Catelan, Pontificia Universidad Catolica de Chile; R. H. McNaught, Australian National University; 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 public images from the Catalina Sky Survey (CSS).

---------------------------------------------------------------------------— SN 2012 UT R.A. (2000.0) Decl. Mag. Offset ---------------------------------------------------------------------------— 2012fi Oct. 10.42 5 21 25.93 -16 52 55.9 18.0 11".2 E, 21".9 S ---------------------------------------------------------------------------—

The variable was designated PSN J05212593-1652559 when it was posted at the Central Bureau's TOCP webpage and is here designated SN 2012fi based on the spectroscopic confirmation reported below. Further CCD magnitudes for 2012fi (unfiltered unless noted otherwise): Feb. 23.10 UT, [19.5 (CSS); Oct. 17.077, 18.0 (Federica Luppi and Luca Buzzi, Varese, Italy; 0.38-m f/6.8 reflector; position end figures 26s.07, 58".7; reference stars from USNO-B1.0 catalogue; image posted at website URL http://www.astrogeo.va.it/pub/TOCP/PSN_P17166.jpg); Oct. 17.418, 17.6 (Joseph Brimacombe, Cairns, Australia; luminance filter; position end figures 26s.09, 58".9; image posted at the following website URL: http://www.flickr.com/photos/43846774@N02/8098401906/). Luppi and Buzzi note that a knot or H II region is visible in Digitized Sky Survey images within 1".5 of the position of 2012fi.