[IAUC] CBET 1561: 20081106 : SUPERNOVA 2008gx IN NGC 3144

[IAUC mailing list]

                                                  Electronic Telegram No. 1561
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS en CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT en CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html


SUPERNOVA 2008gx IN NGC 3144
     Markku Nissinen and Veli-Pekka Hentunen, Kangaslampi, Varkaus, Finland,
report the discovery of an apparent supernova (mag 16.8) on CCD images
(limiting mag 19.1) taken over three hours beginning on Nov. 4.857 UT with
a 30.5-cm Meade LX200 f/10 reflector (+ SBIG ST8-XME camera + Bessel R filter).
The new object is located at R.A. = 10h15m32s.95, Decl. = +74o12'59".1
(equinox 2000.0), which is 3" east and 14" south of the center of the galaxy
NGC 3144.  Nothing is visible at this position on their 150-s unfiltered image
taken on 2008 Oct. 22 (limiting red mag 19.7) or on a Palomar Sky Survey F
image (via the Digitized Sky Survey; limiting red mag 20.8).  At their
request, A. Oksanen (Muurame, Finland) obtained confirming CCD images with
a 40-cm reflector on Nov. 5.136 showing 2008gx at magnitude V = 16.9 and
at position end figures 32s.92, 59".4; an additional image taken by
Oksanen on Nov. 5.681 yields V = 16.8 and position end figures 32s.90,
59".8.  Oksanen has posted an image of 2008gx at the following website URL:
http://murtoinen.dyndns.org/ccd/ngc3174/NGC%203174_V_20081105T1620.jpg.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2008 CBAT
2008 November 6                  (CBET 1561)              Daniel W. E. Green