SIMBAD references

G. H. Marion, Harvard-Smithsonian Center for Astrophysics (CfA), on behalf of the CfA Supernova Group, reports that a spectrum (range 340-740 nm) of PSN J12043294+2012114 = 2011bc was obtained on Apr. 3 UT by Marion 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 the object is a type-Ia supernova several days before maximum light. Using the NED redshift of z = 0.020728 for NGC 4076 (which is the presumed host), they estimate the velocity of the Si II 635.5-nm feature to be approximately 17000 km/s.