2010CBET.2336....1V

S. Valenti and A. Pastorello, Queen's University, Belfast; M. Turatto, Istituto Nazionale di Astrofisica (INAF), Osservatorio di Catania; and S. Benetti and F. Bufano, INAF, Osservatorio di Padova, on behalf of a larger collaboration, report that a low-signal-to-noise spectrogram of 2010dc (cf. CBET 2291), obtained on June 19.4 UT with the European Southern Observatory's New Technology Telescope (+ EFOSC2; range 350-730 nm; resolution 1.9 nm) under poor sky conditions, is that of a type-Ib/c supernova, 2-3 weeks after maximum. Comparison of the observed spectrum with a library of supernova spectra via the "GELATO" code (Harutyunyan et al. 2008, A.Ap. 488, 383; available at website URL https://gelato.tng.iac.es/login.cgi) shows strong resemblance to that of SN 2007gr (Valenti et al. 2008, Ap.J. 673, 155) at 17 days after B-band maximum.