October 31, 2006
Daniel W. E. Green, Central Bureau for Astronomical Telegrams, reports (Central Bureau Electronic Telegram 711) that S. Nakano, Sumoto, Japan, reports the discovery of a brightening star in Cassiopeia by Akihiko Tago, Ayabe, Tsuyama, Okayama-ken, Japan. Unfiltered CCD observations by Tago include October 25.538 UT, 10.7; 27.409, 10.5; 30.411, 8.8; 31.469, 7.5. Tago used a 70-mm f/3.2 lens and a Canon EOS 20Da digital camera (limiting magnitude 12).
Tago adds that a star of magnitude 11.8, which did not show variability in his earlier images and which he identifies as GSC 3656-1328, is located very close to the new object's position of:
R.A. = 00h 09m 21.81s, Decl. = +54o 39' 43.8" (2000.0)
According to Green, apparently the GSC star is the same as listed in the USNO-A2 catalogue as 1425.00229853, having position end figures 22.00s, 44.0" and blue and red magnitudes 11.9 and 11.3, respectively.
A search at AAVSO of SIMBAD, the GCVS+NameLists, and VSX showed nothing variable close to the position of the new object.
Visual, PEP, and CCD coverage is requested; photometric observers should use a V filter if possible.
The position of the object lies within the field of the 'a' scale AAVSO chart for R Cas. The comparison star magnitudes on this chart go to 7.5, so they may be used while the object is so bright. The chart is at:
obsolete link: [http://www.aavso.org/cgi-bin/searchcharts3.pl?name=r%20cas]
2016 link: https://www.aavso.org/vsp
Please report observations to the AAVSO as: 0004+54B VAR CAS 06. Also, be sure to indicate what chart/comparison star(s) you used.
Congratulations to Akihiko Tago on his latest discovery!
This special notice was compiled by: Elizabeth O. Waagen
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