2012CBET.3111....2C

S. B. Cenko, A. V. Filippenko, and J. M. Silverman, University of California, Berkeley; and A. Gal-Yam, Weizmann Institute of Science, report that a CCD spectrum (range 340-800 nm) obtained on May 18 UT by L. Pei, M. Nguyen, D. Carson, and A. J. Barth (University of California, Irvine) with the Kast double spectrograph on the Shane 3-m telescope at Lick Observatory shows that 2012cg is probably a very young type-Ia supernova. The spectrum resembles that of SN 1990N about two weeks before maximum brightness (Leibundgut et al. 1991, Ap.J. 371, L23). Intensive follow-up observations at all wavelengths are encouraged.