SUPERNOVA 2009ca
G. Pignata, J. Maza, M. Hamuy, R. Antezana, L. Gonzalez, P. Gonzalez, P. Lopez, S. Silva, G. Folatelli, D. Iturra, R. Cartier, F. Forster, and S. Marchi, Universidad de Chile; B. Conuel, Wesleyan University; and D. Reichart, K. Ivarsen, 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 17.1 +/- 0.3) on an unfiltered image taken on Apr. 3.36 UT with the 0.41-m 'PROMPT 3' telescope located at Cerro Tololo. The new object, which is also present at mag approximately 17.5 +/- 0.4 in an image taken on Mar. 30.37, is located at R.A. = 21h26m22s.20 +/- 0".1, Decl. = -40°51'48".6 +/- 0".1 (equinox 2000), which is about 2".5 west and 4".7 south of the center of the apparent host galaxy. Nothing is visible at this position on archival images taken on 2008 Oct. 21.04 and 27.19 (limiting mag 18.5).

NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars.

2009 April 03

(C) Copyright 2009 CBAT (CBET 1750)

Daniel W. E. Green