Electronic Telegram No. 2646 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 2011T IN UGC 10733 = PSN J17100362+3230012 M. Peoples, J. Newton, and T. Puckett report the discovery of an apparent supernova (mag 16.3) on an unfiltered CCD image (limiting mag 19.2) taken with a 0.40-m reflector at Portal, AZ, U.S.A., on Jan. 28.54 UT in the course of the Puckett Observatory Supernova Search. The new object, which was confirmed at mag 16.3 on Jan. 29.54 by Puckett with the 40-cm reflector at Portal, is located at R.A. = 17h10m03s.62, Decl. = +32o30'01".2 (equinox 2000.0), which is 22".9 west and 0".9 north of the center of UGC 10733. Nothing is visible at this position on images taken by Puckett on 2010 Mar. 5 (limiting mag 19.8). The object was designated PSN J17100362+3230012 on the Central Bureau's TOCP webpage. Uday K. Gurugubelli, D. K. Sahu, G. C. Anupama, P. Anto, and S. Arora, Indian Institute of Astrophysics, Bangalore, report that a low-resolution spectrum (range 350-750 nm) of 2011T, obtained on Jan. 31.98 UT with the Indian Astronomical Observatory's 2-m Himalayan Chandra Telescope (+ HFOSC), shows it to be a normal type-Ia supernova, about a month after maximum light. Using the SNID code of Blondin and Tonry (2007, Ap.J. 666, 1024), the spectrum of 2011T is found to best match that of SN 1994D at about 40 days after maximum light. NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2011 CBAT 2011 February 2 (CBET 2646) Daniel W. E. Green