Electronic Telegram No. 632 Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A. IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions) CBAT@CFA.HARVARD.EDU (science) URL http://cfa-www.harvard.edu/iau/cbat.html SUPERNOVA 2006gc IN UGC 3219 S. Blondin, M. Modjaz, R. Kirshner, and P. Challis, Harvard-Smithsonian Center for Astrophysics, report that a spectrogram (range 350-740 nm) of SN 2006gc (cf. CBET 628, IAUC 8750), obtained by P. Berlind on Sept. 19.50 UT with the F. L. Whipple Observatory 1.5-m telescope (+ FAST), shows it to be a type-II supernova roughly one month past explosion. The spectrum consists of P-Cyg lines of the Balmer series, consistent with the plateau phase of a normal type-II supernova. Adopting a recession velocity of 8481 km/s for the host galaxy (from de Vaucouleurs et al. 1991, Third Ref. Cat. of Bright Galaxies), the maximum absorption in the H_beta line (rest 486.1 nm) is blueshifted by roughly 9500 km/s. J. M. Silverman, T. N. Steele, and A. V. Filippenko, University of California, Berkeley, report that inspection of CCD spectra (range 325-1030 nm), obtained on Sept. 19 UT with the Lick 3-m telescope (+ Kast), shows that SN 2006gc is of type II, probably several weeks after the explosion. Removing the host-galaxy recession velocity of 8481 km/s (de Vaucouleurs et al. 1991, Third Reference Catalogue of Bright Galaxies), the minimum of the H-alpha P-Cyg profile is measured to be -11500 km/s. NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2006 CBAT 2006 September 19 (CBET 632) Daniel W. E. Green