2012CBET.3306....1P

Stuart Parker, Oxford, Canterbury, New Zealand, reports his discovery of an apparent supernova (red mag 17.4) on a 35-s unfiltered CCD image (limiting mag 19.0) taken on Oct. 10.510 UT with a 30-cm Astro-Tech AT12RC Ritchey- Chretien astrograph (+ ST10 camera) at his Parkdale Observatory in the course of the Backyard Observatory Supernova Search. The new object is located at R.A. = 6:20:06.24, Decl. = -64:57:08.5 (equinox 2000.0; reference stars from USNO-B and UCAC3 catalogues), which is 8" east and 1" south of the nucleus of the galaxy PGC 75651. Nothing is visible at this postion on Digitized Sky Survey red and infrared images (limiting red magnitude > 19). The variable was designated PSN J06200624-6457085 when it was posted at the Central Bureau's TOCP webpage and is here designated SN 2012gp based on the spectroscopic confirmation reported below. Additional CCD magnitudes for 2012gp: Sept. 27.700, [18.5 (Parker); Oct. 14.374, 17.4 (Parker; 35-cm Celestron C14 reflector + ST10 camera; limiting mag 18.5); 19.570, 17.1 (Parker; instrumentation as on Oct. 14); 20.672, R = 16.7 (J. Brimacombe, Cairns, Australia; position end figures 07s.31, 08".6; image posted at website URL http://www.flickr.com/photos/43846774@N02/8110432939/); 20.679, 16.7 (Brimacombe; infrared filter, bandpass > 700 nm; position end figures 07s.18, 08".0; image posted at the following website URL: http://www.flickr.com/photos/43846774@N02/8109994621/).