2010CBET.2482....1M

J. Maza, M. Hamuy, R. Antezana, L. Gonzalez, P. Gonzalez, S. Silva, G. Folatelli, R. Cartier, F. Forster, and S. Marchi, 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 two apparent supernovae – one of which appears to be a luminous blue variable in Aquila, from spectroscopy.

SN 2010il was at magnitude approximately 16.4 on an unfiltered image taken on Sept. 29.10 UT with the 0.41-m 'PROMPT 5' telescope located at Cerro Tololo, and at mag approximately 16.3 in an image taken on Sept. 30.11. SN 2010il is located at R.A. = 20:29:53.12 ± 0".1, Decl. = -2:11:24.7 ± 0".1 (equinox 2000.0), which is about 3".3 east and 3".9 north of the center of the galaxy NGC 6922. Nothing is visible at this position on archival images taken on Sept. 18.15 (limiting mag 18.5) and 10.09 (limiting mag 18.0).

The suspected supernova in NGC 1511 was at magnitude approximately 15.9 on an unfiltered image taken on Sept. 29.25 UT with the 0.41-m 'PROMPT 4' telescope located at Cerro Tololo, and at mag approximately 15.6 in an image taken on Sept. 30.11; the variable is located at R.A. = 3:59:38.07 ± 0".1, Decl. = -67:37:54.6 ± 0".1 (equinox 2000.0), which is about 6".3 east and 8".5 north of the center of the galaxy NGC 1511. Nothing is visible at this position on archival images taken on Sept. 6.39 and 18.38 (limiting mag 18.0).