2011CBET.2905....1C

F. Ciabattari, S. Donati, E. Mazzoni, G. Petroni, and M. Rossi, Borgo a Mozzano Italy, report the discovery of an apparent supernova (mag 18.1) on unfiltered CCD images obtained on Nov. 17.73 and 18.79 UT with a 0.5-m Newtonian reflector in the course of the Italian Supernovae Search Project, the new object being located at R.A. = 23:18:16.55, Decl. = +0:15:43.1 (equinox 2000.0; astrometry with respect to UCAC2-catalogue stars), which is 14" east and 4" north of the center of the galaxy NGC 7589. Nothing is visible at this position in their images from September (limiting magnitude 19.1). The variable was designated PSN J23181655+0015431 when it was posted at the Central Bureau's TOCP webpage and is here designated SN 2011hv based on the spectroscopic confirmation reported below. Additional magnitudes for 2011hv: 1988 Aug. 17, [20.3 (Palomar Sky Survey via Digitized Sky Survey; J plate; via Ciabattari); 1991 Sept. 4, [20.3 (Palomar Sky Survey, F plate; via Ciabattari); 2011 Nov. 19.088, 17.4 (Joseph Brimacombe, Cairns, Australia; luminance filter; position end figures 16s.50, 42".7; image posted at website URL http://www.flickr.com/photos/43846774@N02/6363363975/).