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[vsnet-obs 46860] (fwd) Re: vsnet-obs 46842



From: "Mike Simonsen" <mikesimonsen@mindspring.com>
Subject: Re: [vsnet-obs 46853] Re: vsnet-obs 46842
Date: Fri, 12 Sep 2003 18:26:16 -0400

> SGEVAR 030912.1611  13.9  SXN   FORMERLY TY SGE

   Would you please be more informative?  Use GSC name if the object
is not TY Sge itself.<

Yes, and my identification of TY Sge should be made clear also.

TY SGE = GSC 1621:53
GSC2.2 N0211313705     20:03:37.47  +17:01:28.5  V=12.011+/-0.014
B-V=1.964+/-0.010 (from A. Henden dat file)
Apparently a SR type variable with a range of 11.7-12.2V and a period of
around 99 days.
This star was historically used as a comp star on the RZ Sge charts, either
a 119 or 120 depending on which chart you used.

The star previously marked as TY Sge on older versions of the AAVSO charts
is now temporarily designated "var" in the unwieldy AAVSO system of
identification of secondary variables on charts.

So SGEVAR is-
GSC2.2 N021131332556  20:03:36.61  +17:01:13.0  V=13.712+/-0.022
B-V=0.634+/-0.022 (from A. Henden dat file)

Both stars are in the immediate vicinity of RZ Sge, whose AAVSO charts have
been the subject of quite a bit of work recently by both the aavso-sequence
and aavso-chart teams.

Mike Simonsen


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