Electronic Telegram No. 2671 Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION CBAT Director: Daniel W. E. Green; Hoffman Lab 209; Harvard University; 20 Oxford St.; Cambridge, MA 02138; U.S.A. e-mail: cbatiau@eps.harvard.edu (alternate cbat@iau.org) URL http://www.cbat.eps.harvard.edu/index.html Prepared using the Tamkin Foundation Computer Network SUPERNOVA 2011aq IN NGC 1056 = PSN J02424814+2834258 Further to CBET 2640, S. B. Cenko, W. Li, and A. V. Filippenko report the LOSS discovery of an apparent supernova on unfiltered KAIT images: SN 2011 UT R.A. (2000.0) Decl. Mag. Offset 2011aq Jan. 24.20 2 42 48.14 +28 34 25.8 18.0 2".9 W, 0".9 S Additional KAIT magnitudes for 2011aq: Jan. 17.20 UT, [19.3; Feb. 3.15, 17.3. This object was designated PSN J02424814+2834258 on the Central Bureau's TOCP webpage and is here designated SN 2011aq based on the spectroscopic report below. J. M. Silverman, S. B. Cenko, and A. V. Filippenko, University of California, Berkeley, report that inspection of a CCD spectrum (range 330-1000 nm), obtained on Mar. 9 UT with the 10-m Keck I telescope (+ LRIS), shows that PSN J02424814+2834258 = 2011aq is a type-II supernova with well-developed P-Cyg line profiles. The spectrum is consistent with an age of about 1.5 months, derived from the discovery and prediscovery images. After removal of the host-galaxy recession velocity of 1550 km/s (measured from narrow host- galaxy emission lines), they find the absorption minimum of the H-alpha line to be blueshifted by about 5300 km/s. NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2011 CBAT 2011 March 11 (CBET 2671) Daniel W. E. Green