2012CBET.3110....2M

G. H. Marion, Harvard-Smithsonian Center for Astrophysics (CfA), on behalf of the CfA Supernova Group, report that a spectrum (range 340-740 nm) of PSN J13411049+3022372 = 2012cf was obtained on May 17 UT by J. Irwin with the F. L. Whipple Observatory 1.5-m telescope (+ FAST). Cross-correlation with a library of supernova spectra using the "Supernova Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) shows that 2012cf is a type-Ia supernova a few days before maximum brightness. A good fit is found to the template of SN 2002er at 4 days before maximum. The velocity of the Si II 635.5-nm absorption feature is measured to be approximately 11800 km/s, using an estimated redshift of z = 0.039861 for PGC 48432 as reported in NED (de Vaucouleurs et al. 1991, RC3.9C).