Electronic Telegram No. 2008
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


NOVA SCUTI 2009
     S. Nakano, Sumoto, Japan, reports the discovery of Hideo Nishimura
(Miyawaki, Kakegawa, Japan) of a possible nova (mag 8) on two 10-s CCD frames
(limiting magnitude 11.5) taken on Nov. 8.3699 and 8.3700 UT using a Canon
EOS 5D camera (+ Minolta 120-mm f/3.5 lens), the new object being measured
by Nishimura to be located at R.A. = 18h43m44s, Decl. = -7d37'01" (equinox
2000.0).  Nishimura adds that nothing is visible at this position on two
frames taken on Nov. 7.377 using same instrumentation (limiting magnitude
11.5), and there is no star on his survey frames taken in 2008; he notes
that nearby Cepheid variable SS Sct (position end figures 43s.50, 43'52".0)
is also visible on his frames.  Nakano has measured mag 8.8 and position
end figures 45s.65, 36'41".5 (uncertainty 2".0) for the new variable from
Nishimura's JPEG image (limiting mag 12.0).
     Following posting on the Central Bureau's unconfirmed-objects webpage,
E. Guido and G. Sostero report that they obtained unfiltered CCD images
remotely through a 0.25-m f/3.4 reflector from the GRAS Observatory near
Mayhill, NM, U.S.A. on Nov. 9.08, finding the presumed nova to be at mag
about 8.5 at R.A. = 18h43m45s.57, Decl. = -7d36'42".0 (equinox 2000.0;
UCAC-2 catalogue reference stars).  Following additional query by the
Central Bureau, Guido adds that the extreme stellar crowding due to nearby
field stars makes this measurement rather difficult, but comparison with a
Digitized Sky Survey (DSS) plate (limiting red magnitude about 20),
obtained on 1996 Aug. 13, fails to show a clear unambiguous pre-outburst
precursor; an animation showing their image and the DSS image is posted at
website URL http://bit.ly/UdKzF.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2009 CBAT
2009 November 9                  (CBET 2008)              Daniel W. E. Green