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(cba:news) coords for the Cas transient (Joe Patterson) [2006-11-03T09:38:56Z]



along with a brief description of our TOO proposal...



   We propose to obtain a short X-ray observation of the recently
discovered outbursting star in Cassiopeia ("Var Cas 2006").  The
quiescent counterpart appears to be a distant (1 Kpc) B star, and the
4 magnitude outburst is by far the largest ever seen in such a star.
This could be the signature of an accreting compact star in a close binary,
or it could be an extremely violent ejection of a shell by the B star
which has oddly failed to show emission lines at any time in its
history.  The first scenario would produce a strong hard X-ray source
-- probably >0.5 UFU -- while the second would produce only soft X-rays
or none at all.  A short observation with Swift would easily distinguish
between these.

Exact 2000 coords: 00 09 21.98  from Tycho-2 astrometry
                  +54 39 43.9

V= 7.4 in outburst Oct 30, =9.5 on Nov 2, probably 11.6 by about Nov. 9.