Electronic Telegram No. 2618 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 2010lt IN UGC 3378 David J. Lane, Stillwater Lake, NS, Canada; and K. A. Gray and Paul Gray, Birdton, NB, Canada, report their discovery of an apparent supernova (mag about 17.0) on an unfiltered CCD image taken with a 0.36-m f/5.5 telescope on 2010 Dec. 31.921 UT, with a confirming image taken by Brian Tieman (Streator, IL, U.S.A.) showing the new object at mag about 17 on 2011 Jan. 2.990. The new object is located at R.A. = 6h06m09s.18, Decl. = +83o50'28".8 (equinox 2000.0), which is about 20" west and 10" north of the nucleus of the galaxy UGC 3378. Nothing is visible at this position on unfiltered CCD images taken by Lane with a 0.28-m C11 telescope (+ ST9 camera) on 2005 Oct. 31 (limiting mag approximately 18.0), 2006 Jan. 5 (limiting mag approximately 18.3), and 2006 Mar. 29 (limiting mag approximately 18.5); also, nothing is visible at the position of 2010lt on digitized Palomar Sky Survey red, infrared, and blue images. Lane has posted an images of 2010lt by himself at http://www.davelane.ca/aro/suspect/ugc3378.jpg. NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2011 CBAT 2011 January 3 (CBET 2618) Daniel W. E. Green