Electronic Telegram No. 2778 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 2011ej 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; E. C. Beshore and S. M. Larson, Lunar and Planetary Laboratory, University of Arizona; and E. Christensen, Gemini Observatory, report the discovery of an apparent supernova in unfiltered Catalina Sky Survey (CSS) images: SN 2011 UT R.A. (2000.0) Decl. Mag. 2011ej July 3.36 22 00 42.26 - 8 15 42.0 18.8 Further CSS magnitudes for 2011ej: June 4.44 UT, [20.3; 23.39, 18.9. A. S. Moskvitin, T. A. Fatkhullin, V. N. Komarova, V. V. Sokolov, and T. N. Sokolova, Special Astrophysical Observatory (SAO), Russian Academy of Sciences, report that a CCD spectrogram (range 380-790 nm; 1-nm resolution) was taken of 2011ej with the 6-m BTA telescope (+ Scorpio) on July 7 UT. The spectrum reveals strong H I and Fe II lines. Cross-correlation with a library of supernova spectra using the "Supernova Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) shows matches with the spectrum of the type-II-P supernova 2004et at phase +6 days, redshifted to z = 0.042 +/- 0.004. The authors report magnitude V = 18.91 +/- 0.03 for 2011ej, obtained with the same instrument on July 7.988. NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2011 CBAT 2011 August 3 (CBET 2778) Daniel W. E. Green