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AAVSO Special Notice #22

Bright New Variable in Cassiopeia
(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:


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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