Electronic Telegram No. 2269

Central Bureau for Astronomical Telegrams
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138,
U.S.A. IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
URL http://www.cfa.harvard.edu/iau/cbat.html

G. Pignata and M. Cifuentes, Universidad Andres Bello; J. Maza, M. Hamuy, R. Antezana, L. Gonzalez, P. Gonzalez, S. Silva, G. Folatelli, R. Cartier, F. Forster, and S. Marchi, Universidad de Chile; B. Conuel, Wesleyan University; and D. Reichart, K. Ivarsen, J. Haislip, A. Crain, D. Foster, M. Nysewander, and A. LaCluyze, University of North Carolina at Chapel Hill, on behalf of the CHASE project, report the discovery of an apparent supernova (mag approximately 17.6 +/- 0.3) on an unfiltered image taken on May 4.05 UT with the 0.41-m 'PROMPT 5' telescope located at Cerro Tololo. The new object, which is also present at mag approximately 17.2 in an image taken on May 4.98, is located at R.A. = 11h04m06s.57 +/- 0".1, Decl. = +4°49'58".7 +/- 0".1 (equinox 2000.0). Nothing is visible at this position on archival images taken on Apr. 4.13 (limiting mag 17.5) and (in a stack of five 40-s images) on Mar. 25.01 (limiting mag 18.7). The surface brightness of the presumed host galaxy has no clear galaxy core.

2010 May 06
(C) Copyright 2010 CBAT
(CBET 2269 )
Daniel W. E. Green