2009CBET.1769....1P

G. Pignata, J. Maza, M. Hamuy, R. Antezana, L. Gonzalez, P. Gonzalez, P. Lopez, S. Silva, G. Folatelli, D. Iturra, R. Cartier, F. Forster, S. Marchi, and A. Rojas, 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 18.2 ± 0.4) on an unfiltered image taken on Apr. 15.13 UT with the 0.41-m 'PROMPT 4' telescope located at Cerro Tololo. The new object, which is also present in images taken on Apr. 3.32 (at mag approximately 18.8 ± 0.5) and 17.08 (at mag approximately 18.1 ± 0.4), is located at R.A. = 12:08:07.21 ± 0".1, Decl. = -31:59:25.3 ± 0".1 (equinox 2000.0), which is about 1".6 west and 6".5 north of center of the presumed host galaxy. Nothing is visible at this position on archival images taken on Mar. 27.19 (limiting mag 19.2) and 30.31 (limiting mag 18.9) or on Digitized Sky Survey (limiting mag 19.0, though no passband or dates indicated).