[IAUC] CBET 2611: 20101229 : POSSIBLE SUPERNOVA NEAR ESO 495-16

[quai en eps.harvard.edu]

                                                  Electronic Telegram No. 2611
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
CBAT Director:  Daniel W. E. Green; Hoffman Lab 209; Harvard University;
 20 Oxford St.; Cambridge, MA  02138; U.S.A.
e-mail:  cbatiau en eps.harvard.edu (alternate cbat en iau.org)
URL http://www.cbat.eps.harvard.edu/index.html
Prepared using the Tamkin Foundation Computer Network


POSSIBLE SUPERNOVA NEAR ESO 495-16
     Simone Leonini, Siena, Italy, reports the discovery by G. Guerrini and
himself of an possible supernova (mag about 15.6) on an unfiltered CCD image
(limiting mag about 17.6) taken on Dec. 27.991 UT during the Montarrenti
Observatory Supernovae Search program using a 0.53-m f/7.8 Ritchey-Chretien
telescope (+ Apogee Alta U47 CCD camera).  The new object is located at R.A.
= 8h32m40s.98, Decl. = -24d02'45".6 (equinox 2000.0), which is 17" south of
the nucleus of the galaxy ESO 495-16.  No stellar source is visible at this
position in past images, including one on 2010 Mar. 6.864 (limiting mag about
19.0), and the variable does not appear on Palomar Sky Survey plates from 1982
Apr. 23 (infrared), 1978 Mar. 4 (red, blue; limiting mag 19.5).  An image was
obtained on Dec. 29.372 by Joseph Brimacombe, Cairns, Australia, via three
600-s clear-filter images (limiting mag about 19.0) using a robotic 0.51-m
RCOS telescope (+ SBIG STL11K camera) from Mayhill, New Mexico, USA, yielding
red mag about 15.2 and position end figures 41s.08, 46".7 for the variable.
The discovery image of the variable is posted at the following website URL:
http://www.jacopobaldi.it/dati/psn%20in%20ESO495-016.jpg; the confirming image
is at http://www.jacopobaldi.it/dati/confirmation%20psn%20in%20ESO495-016.JPG.


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                         (C) Copyright 2010 CBAT
2010 December 29                 (CBET 2611)              Daniel W. E. Green