(cba:news) [Fwd: CBET 2050: 20091126 : POSSIBLE NOVA IN ERIDANUS]

[Joe Patterson]

Dear CBAers,

With a galactic latitude of 31 degrees and a possible range of 8 mag, 
this could be an awfully interesting object.  It could be a very nearby 
dwarf nova, or a really distant nova.  Or maybe something else... but 
it's very much worth a looksee to figure out if the new object really is 
that 15th mag star.  If it is, then I highly recommend a photometric 
run!  And if not, well, it's still worth some study.

joe

-------- Original Message --------
Subject: CBET 2050: 20091126 : POSSIBLE NOVA IN ERIDANUS
Date: Wed, 25 Nov 2009 20:52:31 -0500
From: IAUC mailing list <quai at cfa.harvard.edu>
To: iauc at libraries.cul.columbia.edu

                                                   Electronic Telegram 
No. 2050
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS at CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT at CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html


POSSIBLE NOVA IN ERIDANUS
      Hitoshi Yamaoka, Kyushu University, reports the discovery by K. 
Itagaki
(Yamagata, Japan) of a possible nova (mag 8.1) caught on Nov. 25.536 UT with
his 0.21-m patrol system.  A confirming image taken by Itagaki on Nov. 
25.545
with a 0.60-m reflector shows the object at R.A. = 4h47m54s.21, Decl. =
-10d10'43".1 (equinox 2000.0).  Itagaki notes that there is a faint (mag 
about
15) object near this position on his archival patrol images.  Yamaoka 
suggests
that it might be the brightening of a 15th-mag blue star that is 
contained in
many catalogues (USNO-B1.0 position end figures 54s.19, 42".9), noting that
the amplitude of seven magnitudes is rather large for a dwarf nova, but
somewhat small for a rapid classical nova.  Yamaoka adds that the ASAS-3
system (Pojmanski 2002, Acta. Astron. 52, 397) also detected this object at
the following V magnitudes:  Nov. 10.236 UT, [14.0:; 19.241, 7.34; 22.179,
7.98; 24.269, 8.12.


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       superseded by text appearing later in the printed IAU Circulars.

                          (C) Copyright 2009 CBAT
2009 November 26                 (CBET 2050)              Daniel W. E. Green
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