2010CBET.2534....1S

K. Sarneczky, Konkoly Observatory; and Z. Kuli, Hungarian Astronomical Association, report the discovery of a possible supernova (mag 20.2) in 20-min co-added unfiltered CCD images taken on Oct. 31.825 UT with the 0.60-m Schmidt telescope at Konkoly Observatory, Piszkesteto, Hungary. The new object – which is also present at mag 20.4 in an image taken on Oct. 29.873, and at mag 20.0 on Nov. 1.824 – is located at R.A. = 1:12:35.63, Decl. = +15:28:28.5 (equinox 2000.0), which is 0".5 north of the center of the presumed host galaxy, SDSS J011235.64+152828.0 (whose r magnitude is 20.9). No point source is visible at this position on a co-added 20-min reference image taken on 2010 Oct. 7 (limiting mag 21.5). An animated gif showing the variable is posted at http://titan.physx.u-szeged.hu/~sky/poss-sn.gif.