SIMBAD references

Simone Leonini, Siena, Italy, report the discovery by A. Dimai (Cortina d'Ampezzo, Italy) of an apparent supernova (mag about 16.8) on two unfiltered CCD images (limiting mag 18.0) taken on Oct. 30.774 UT taken with the 0.28-m telescope of the Col Drusci Observatory in the course of the Italian Supernovae Search Project. The new object is located at R.A. = 21:45:09.63, Decl. = +10:06:12.6 (equinox 2000.0), which is 13" west and 9" north of the nucleus of the presumed host galaxy. No stellar source is visible at this position on Palomar Sky Survey infrared, red, and blue plates (1994 July 3, F plate; 1990 Sept. 13, J plate; 1990 July 20, N plate; limiting mag 19.5). The images utilized for the discovery are posted at the following website URL: http://www.astrofilisenesi.it/public/Sne/Uploads/PSN_PGC067294.jpg. The variable was designated PSN J21450963+1006126 when it was posted at the Central Bureau's TOCP webpage and is here designated SN 2012gf based on the spectroscopic confirmation reported below. Additional CCD magnitudes for 2012gf: Sept. 6, [18.0 (Dimai); 27, [18.0 (Dimai); Oct. 16.783, 17.4 (Dimai; pre-discovery; barely visible; limiting mag about 18.0); Nov. 6.077, 17.6 (R. A. Koff, Bennett, CO, USA; Meade 0.25-m f/10 reflector + Apogee U-47 camera; limiting magnitude 19.2; position end figures 09s.47, 12".9; image posted at http://antelopehillsobservatory.org/SNpictures/PSNJ21450963+1006126final.jpg); 7.101, 18.1 (J. Brimacombe, Cairns, Australia; luminance filter; position end figures 09s.47, 13".9). Brimacombe's image is posted at the following website URL: http://www.flickr.com/photos/43846774@N02/8166259876/.