Electronic Telegram No. 1863

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 2009gu IN ESO 68-12
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 16.3 +/- 0.3) on an unfiltered image taken on June 27.10 UT with the 0.41-m 'PROMPT 3' telescope located at Cerro Tololo. The new object, which is also present in an image taken on June 27.98 at mag approximately 15.5 +/- 0.2, is located at R.A. = 15h54m50s.94 +/- 0".1, Decl. = -68°43'00".2 +/- 0".1 (equinox 2000.0), which is about 28".7 east and 0".8 north of the center of the galaxy ESO 68-12. Nothing is visible at this position on archival images taken on June 1.19 and 11.08 (limiting mag 18.0).

NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars.

2009 June 12
(C) Copyright 2009 CBAT
(CBET 1863)
Daniel W. E. Green