Electronic Telegram No. 2504 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 POSSIBLE SUPERNOVA IN PGC 134795 Ivica Pletikosa and Filip Novoselnik, on behalf of the "La Sagra Sky Survey" (LSSS) supernova search team (which includes also Denis Vida, Ivica Skokic, David Gostinski, Robert Gregic, Salvador Sanchez, Jaime Nomen, Reiner Stoss, Bill Yeung, Juan Rodriguez, and Miguel Hurtado), report the discovery of an apparent supernova (magnitude 17.3) on three CCD images (limiting mag about 20.0) taken on Oct. 13.909, 13.923, and 13.936 UT with a 0.45-m telescope. The new object is located at R.A. = 1h55m18s.37, Decl. = -17d46'46".3 (equinox 2000.0), which is 8".6 west and 6".2 south of the nucleus of the presumed host galaxy, PGC 134795. Additional approximate magnitudes for the suspernova suspect, from unfiltered images unless otherwise noted: 1996 Dec. 4.467, [22 (Digitized Sky Survey, red plate); 2010 Oct. 16.946, 17.9 (LSSS). The LSSS image from Oct. 13 has been posted (with the red DSS image on the right) at the following website URL: http://img833.imageshack.us/img833/9923/pgc134795.png. Joseph Brimacombe, Cairns, Australia, finds the new object at mag 18.2 (red mag 17.9 measured by Vida from the same image) and position end figures 18s.29, 46".5 on a stacked CCD exposure taken on Oct. 17.436 remotely using a 51-cm RCOS telescope at the New Mexico Skies Observatory; Brimacombe's image is posted at website URL http://www.flickr.com/photos/43846774@N02/5089347910/. NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2010 CBAT 2010 October 17 (CBET 2504) Daniel W. E. Green