[IAUC] CBET 1899: 20090807 : NOVA SAGITTARII 2009 No. 3

Vie Ago 7 12:09:33 ART 2009

                                                  Electronic Telegram No. 1899
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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NOVA SAGITTARII 2009 No. 3
     Koichi Nishiyama, Kurume, Fukuoka-ken, Japan; and Fujio Kabashima,
Miyaki-cho, Saga-ken, Japan report their discovery of a possible nova (mag =
7.7) in Sagittarius on two 60-s frames on Aug. 6.494 and 6.495 UT
using 105-mm f/4 lens + unfiltered CCD (limiting magnitude 13.3).  They
confirmed the discovery on five frames taken around Aug. 6.494 (0.40-m f/9.8
reflector + unfiltered CCD, limiting magnitude = 16.2) at the J2000.0 position
R.A. = 18h07m07s.67, Decl. = -33d46'33".9.  They note that there was no motion
during 80 minutes and that nothing is visible at this location on survey
frames (limiting magnitude 12.7) on July 22.531 and 29.584 UT.  The object is
also absent on the DSS (POSS2/UKSTU red), ASAS, AAVSO, SIMBAD, 2MASS and
USNO-B1.0, although this last catalogue shows a faint star (I = 12.45) nearby
(at end figures 07s.509, 33".13).

     Grzegorz Pojmanski, Dorota Szczygiel and Bogumil Pilecki, Warsaw
University Astronomical Observatory, subsequently reported independently that
the ASAS3V instrument of the All Sky Automated Survey (telephoto lens 200/2.8,
diameter 70 mm + CCD + Johnson V  filter, three 3-minute exposures, pixel size
14".8) detected a stellar object at V = 7.78 on Aug. 6.182 UT at the
approximate position R.A. = 18h07m08s, Decl. = -33d 46'.6.  The object was not
visible on Aug. 4.152 UT.  A lightcurve and images can be found at
http://www.astrouw.edu.pl/cgi-asas/asas_disc/180708-3346.6,5040 .


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                         (C) Copyright 2009 CBAT
2009 August 7                    (CBET 1899)              Brian G. Marsden