Electronic Telegram No. 1711

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

SUPERNOVA 2009ao IN NGC 2939
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 16.3 +/- 0.2) on an unfiltered image taken on Mar. 4.12 UT with the 0.41-m 'PROMPT 5' telescope located at Cerro Tololo. The new object, which was confirmed with the 'PROMPT 5' telescope at mag approximately 15.8 +/- 0.2 on Mar. 5.04, is located at R.A. = 9h38m08s.54 +/- 0".1, Decl. = +9o31'00".7 +/- 0".1 (equinox 2000.0), which is about 9".6 east and 25".6 south of the center of the galaxy NGC 2939. Nothing is visible at this position on archival images taken on Feb. 19.12 and 24.12 (limiting mag 18.0).

NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars.

2009 March 05
(C) Copyright 2009 CBAT
(CBET 1711)
Daniel W. E. Green