SIMBAD references

Stuart Parker, Oxford, Canterbury, New Zealand, reports his discovery of an apparent supernova (red mag 14.8) on a 30-s unfiltered CCD image (limiting mag 18.5) taken on Oct. 6.706 UT with a 35-cm Celestron C14 reflector (+ ST10 camera) at his Parkdale Observatory in the course of the Backyard Observatory Supernova Search. The new object is located at R.A. = 10:10:09.15, Decl. = -38:08:05.1 (equinox 2000.0; reference stars from USNO-B and UCAC3 catalogues), which is 4" east and 3" south of the nucleus of the galaxy ESO 316-38. Nothing is visible at this position on Digitized Sky Survey red and infrared images (limiting red magnitude > 19). The variable was designated PSN J10100915-3808151 when it was posted at the Central Bureau's TOCP webpage and is here designated SN 2012gw based on the spectroscopic confirmation reported below. Additional CCD magnitudes for 2012gw: July 27.298, [18.5 (Parker); Oct. 10.680, 14.8 (Parker; red unfiltered mag; limiting mag 18.0); 11.768, 16.9 (Joseph Brimacombe, Cairns, Australia; infrared filter, bandpass > 700 nm; position end figures 09s.13, 05".1; image posted at website URL http://www.flickr.com/photos/43846774@N02/8078525364/).