2010CBET.2215....1M

J. Maza, M. Hamuy, R. Antezana, L. Gonzalez, P. Gonzalez, S. Silva, G. Folatelli, R. Cartier, F. Forster, S. Marchi, and A. Rojas, Universidad de Chile; G. Pignata and M. Cifuentes, Universidad Andres Bello; 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 15.5 ± 0.2) on an unfiltered image taken on Mar. 19.22 UT with the 0.41-m 'PROMPT 1' telescope located at Cerro Tololo. The new object, which is also present in an image taken on Mar. 20.16 at mag approximately 15.2, is located at R.A. = 15:49:49.23 ± 0".1, Decl. = -29:23:09.7 ± 0".1 (equinox 2000), which is about 3".1 west and 2".0 north of the center of the galaxy NGC 6000. Nothing is visible at this position in archival images taken on Feb. 22.25 and Mar. 12.33 (limiting mag 17.5). NGC 6000 was also the host galaxy of the type-II supernova 2007ch (cf. CBETs 961, 963).