Electronic Telegram No. 3981 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 2011ki IN UGC 10246 = PSN J16103055+2730005 S. Howerton, Arkansas City, KS, USA; A. J. Drake, S. G. Djorgovski, A. Mahabal, M. J. Graham, and R. Williams, California Institute of Technology; J. L. Prieto, Carnegie Observatories; M. Catelan, Pontificia Universidad Catolica de Chile; R. H. McNaught and G. Garradd, Australian National University; E. C. Beshore and S. M. Larson, Lunar and Planetary Laboratory, University of Arizona; and E. Christensen, Gemini Observatory, reported the Catalina Real-time Transient Survey discovery of an apparent supernova in public images from the Catalina Sky Survey (CSS): SN 2011 UT R.A. (2000.0) Decl. Mag. Offset 2011ki June 1.34 16 10 30.55 +27 30 00.5 19.0 6".9 W, 3".0 N The variable was designated PSN J16103055+2730005 when it was posted at the Central Bureau's TOCP webpage and is here designated SN 2011ki based on the spectroscopic confirmation of this as a type-II supernova on June 3 by Gal-Yam et al. (cf. website URL http://www.astronomerstelegram.org/?read=3403; they also observed 2011ki at mag 19.9 on June 3.38 UT, deriving position end figures 30s.46, 29'59".2). Further CCD magnitudes for 2011ki: 2011 May 20.41, [20.2 (CSS); June 3.357, 18.6 (J. Brimacombe, Cairns, Australia; remotely using a 51-cm RCOS telescope + STL11K camera at the New Mexico Skies observatory near Mayhill, NM, USA; position end figures 30s.48, 30"01".3; image posted at URL http://www.flickr.com/photos/43846774@N02/5807504812/). NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2014 CBAT 2014 September 19 (CBET 3981) Daniel W. E. Green