(IAAC) Fwd: Supernova in NGC 6907 in Capricornus

[Lewis J. Gramer]

[ Sorry this one took me a few days to forward, all! It is quite
easy to get lost in all the verbiage on some of the more "advanced"
deepsky observing lists... Sounds like a fine target for medium to
larger amateur scopes - and it may already be brighter now! -Lew ]


========================================================================
   Date: Tue, 25 May 2004 21:05:30 -0700 (MST)
   From: Brian Skiff <...>
Subject: Supernova in NGC 6907

     Reiki Kushida has found a (likely) supernova in NGC 6907,
a fairly bright galaxy in Capricornus, which I think Tom P mentioned
in his southern observing list as having a spiral arm separated from
the main body of the galaxy.  Though faint at present, the object
has the potential to become bright since the galaxy is nearby.
Since the galaxy is fairly dusty, it could be that the SN is obscured
and not get any brighter, however.  A spectrum will have to be obtained
to determine this, which is likely to be got in a day or two.
Here is the relevant part of the IAU Circular issued this evening.

SUPERNOVA 2004bv IN NGC 6907
     S. Nakano, Sumoto, Japan, reports the discovery by R. Kushida,
Yatsugatake South Base Observatory, of an apparent supernova (mag
15.6) on numerous unfiltered CCD survey frames taken around May
24.70 UT with a 0.40-m Schmidt-Cassegrain reflector.  A follow-up
image by Kushida on May 25.77 showed the new object at mag 15.3.
SN 2004bv is located at R.A. = 20h25m06s.34, Decl. = -24o48'53".7
(equinox 2000.0; measured by Y. Kushida), which is 3".8 west and
20".7 south of the center of NGC 6907.  Nothing is visible at this
location on earlier frames of this field back to 1995 by R.
Kushida, the most recent from 2003 July 24 (limiting mag 19).



\Brian