Electronic Telegram No. 1786
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html


VARIABLE STAR IN LIBRA
     T. Puckett, Ellijay, GA, U.S.A., reports the discovery of a previously
unknown variable star (magnitude V = 14.4) in CCD images taken with a 60-cm
reflector at Ellijay by Puckett, R. Gagliano, and T. Orff on Apr. 27.269 UT.
The new object, which was confirmed at mag 14.8 on Apr. 28.130, is located
at R.A. = 14h43m41s.91 +/- 0s.01, Decl. = -17o55'49".7 +/- 0".2 (equinox
2000.0).  Nothing was visible at this location on an image taken with the
same telescope on Mar. 19.12 (limiting mag 19).  A. Henden, AAVSO, reports
that images obtained with the 35-cm telescope of the Sonoita Research
Observatory on Apr. 30.23 yields position end figures 41s.91, 50".2
(UCAC2 catalogue for reference stars) and the following magnitude and
colors:  V = 14.90, B-V = +0.06, V-R_c = +0.08, R_c - I_c = +0.13
(zero-point uncertainty 0.03 mag).  Henden notes that these are typical
colors for a cataclysmic variable (CV) star.  He adds that the NOMAD
catalogue lists a very faint star with magnitudes B = 20.0 and R = 20.1,
the GSC 2.3.2 catalogue lists a star with magnitudes J = 20.4, F = 19.6,
N = 19.1, and there is no 2MASS detection at this location; these data all
imply a CV outburst with an amplitude of about 5 magnitudes.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2009 CBAT
2009 April 30                    (CBET 1786)              Daniel W. E. Green