Electronic Telegram No. 1891 Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A. IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions) CBAT@CFA.HARVARD.EDU (science) URL http://www.cfa.harvard.edu/iau/cbat.html SUPERNOVA 2009hr Further to CBET 1879, A. J. Drake, S. G. Djorgovski, A. Mahabal, M. J. Graham and R. Williams, California Institute of Technology; 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 CRTS discovery of an apparent supernova in unfiltered CSS images: SN 2009 UT R.A. (2000.0) Decl. Mag. Offset 2009hr July 29.45 00 40 34.13 +03 32 29.1 15.9 1".6W, 9".0S Further observations: Feb. 2.10, [19.5 (CSS); July 31.32, 16.8 (Palomar 1.5-m reflector, Gunn-g), 15.9 (Gunn-r), 16.2 (Gunn-i), 16.1 (Gunn-z). The apparent host galaxy is clearly seen in CFHT 3.6-m + MEGAPRIME images from 2005 June 10. NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2009 CBAT 2009 August 1 (CBET 1891) Brian G. Marsden