[IAUC] CBET 1731: 20090323 : SUPERNOVA 2009bb IN NGC 3278

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                                                  Electronic Telegram No. 1731
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS en CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT en CFA.HARVARD.EDU (science)
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SUPERNOVA 2009bb IN NGC 3278
     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 17.0 +/-
0.3) on an unfiltered image taken on Mar. 21.11 UT with the 0.41-m 'PROMPT 3'
telescope located at Cerro Tololo.  The new object, which is also present at
mag approximately 16.6 +/- 0.2 in an image taken on Mar. 23.01 , is located
at R.A. = 10h31m33s.87 +/- 0".1, Decl. = -39o57'30".0 +/- 0".1 (equinox
2000.0), which is about 17".0 west and 13".5 south of the center of the
galaxy NGC 3278.  Nothing is visible at this position on template-subtracted
archival images taken on Mar. 15.13 (limiting mag 18.5) and Mar. 19.20
(limiting mag 18.0).


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                         (C) Copyright 2009 CBAT
2009 March 23                    (CBET 1731)              Daniel W. E. Green