[IAUC] CBET 2031: 20091119 : SUPERNOVA 2009ll IN ESO 122-4

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                                                  Electronic Telegram No. 2031
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
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SUPERNOVA 2009ll IN ESO 122-4
     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; G. Pignata, 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 18.4 +/- 0.4) on an unfiltered image taken on
Nov. 12.32 UT with the 0.41-m 'PROMPT 5' telescope located at Cerro Tololo.
The new object is located at R.A. = 6h42m12s.52 +/- 0".1, Decl. = -61o04'27".2
+/- 0".1 (equinox 2000.0), which is about 4".6 west and 12".2 south of the
center of the galaxy ESO 122-4.  Nothing is visible at this location on an
R-band image taken on 1988 with the European Southern Observatory 1-m Schmidt
telescope (limiting mag 19.0).  Additional approximate unfiltered CCD
magnitudes for 2009ll:  2008 Sept. 1.32-2009 Nov. 3.31, [20.5 (thirty-eight
40-s stacked archival images); 2009 Jan. 31.10, [19.0; Oct. 8.36, [18.5;
Nov. 8.34, 18.7; 13.11, 18.3 (seven 40-s exposures); 19.10, 18.2 (thirty-one
40-s images).


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                         (C) Copyright 2009 CBAT
2009 November 19                 (CBET 2031)              Daniel W. E. Green