2012CBET.3232....1P

G. Pignata, M. Cifuentes, and Y. Apostolovski, Universidad Andres Bello; J. Maza, M. Hamuy, R. Antezana, L. Gonzalez, R. Cartier, F. Forster, S. Silva, F. Carrasco, P. Sanchez, C. Hervias, and R. Ramirez, Universidad de Chile; F. Aros, Pontificia Universidad Catolica de Chile; B. Conuel, Wesleyan University; G. Folatelli, IPMU, University of Tokyo; and D. Reichart, K. Ivarsen, J. Haislip, A. Crain, D. Foster, M. Nysewander, and A. LaCluyze, University of North Carolina at Chapel Hill, on behalf of the CHASE project (which is part of the Millennium Center for Supernova Science collaboration), report the discovery of an apparent supernova (mag approximately 17.8) on an unfiltered image taken on Sept. 5.08 UT with the 0.41-m 'PROMPT 3' telescope located at Cerro Tololo. The new object is located at R.A. = 22:03:02.99 ± 0".2, Decl. = -22:31:01.0 ± 0".2 (equinox 2000.0), which is about 4".9 west and 0".5 south of center of the presumed host galaxy. The variable was designated PSN J22030299-2231010 when it was posted at the Central Bureau's TOCP webpage and is here designated SN 2012ev based on the spectroscopic confirmation reported below. Additional unfiltered CCD magnitudes for 2012ev: 2011 July 24-2012 Aug. 28, [20.5 (stack of twenty-two 40-s CHASE images); 2012 Aug. 28.10, [18.5 (CHASE); Sept. 6.05, 17.7 (CHASE); 8.945, 18.2 (Federica Luppi and Luca Buzzi, Varese, Italy; 0.38-m f/6.8 reflector; position end figures 03s.05, 00".6; reference stars from CMC-14 catalogue; image posted at website URL http://www.astrogeo.va.it/pub/TOCP/PSN_J22030299-2231010.jpg). Joseph Brimacombe, Cairns, Australia, reports that four 15-min CCD images taken with a 41-cm RCOS telescope (+ STL6K camera + infrared filter) yields position end figures 02s.97, 00".0 (photometry was too difficult due to the background light of the presumed host galaxy); his image is posted at website URL http://www.flickr.com/photos/43846774@N02/7974278686/.