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AAVSO Special Notice #20

Possible Supernova in UGC 4904 (Lynx)
(October 11, 2006)

Daniel W. E. Green, Central Bureau for Astronomical Telegrams, reports
(Central Bureau Electronic Telegram 666) that S. Nakano, Sumoto, Japan,
reports the discovery of a possible supernova in UGC 4904 by K. Itagaki,
Teppo-cho, Yamagata, Japan, at unfiltered CCD magnitude 13.8 on images
taken around Oct. 9.752 UT using a 0.60-m f/5.7 reflector. Itagaki
reported that nothing is visible at this location on the Digitized Sky
Survey.

The object was discovered independently by T. Puckett and R. Gorelli
at unfiltered CCD magnitude 13.8 on images taken Oct. 10.33 UT
using a 0.35-m reflector at Ellijay, GA, in the course of the Puckett
Observatory Supernova Search,

Position of object

Itagaki: 11" west and 7" south of nucleus at
R.A. 09:17:20.78   Decl. +41:54:32.7    (2000)

Puckett and Gorelli: 8.8" west and 8.8" south of galaxy center
R.A. 09:17:20.85   Decl. +41:54:33.0    (2000)


Please observe visually or photometrically with a B, V, and/or Ic filter.

Report observations to the AAVSO as 0910+42 VARUGC4904. Please be sure to
indicate what chart/comparison star(s) you used.

Note that CBET 666 includes information about observations from 2004 of
what may be this object that led to questions about the nature of the
object seen in 2004.

This special notice was compiled by: Elizabeth O. Waagen
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