[vsnet-alert 1370] CVC 159 (KUV 23012+1702 = new UG in Peg; CBA Belgium status)

[Tonny Vanmunster <tvanmuns@innet.be>]

BELGIAN ASTRONOMICAL SOCIETY V.V.S. -  Working Group Variable Stars
Cataclysmic Variables Circular No.159              1997, December 6
Ed.: T. Vanmunster, Walhostraat 1A, 3401 Landen, BELGIUM
     Internet: tvanmuns@innet.be                  TEL. 32-11-831504
     CVC Web Page : http://vsnet.astro.columbia.edu/~cba/cvc
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KUV 23012+1702 = a new UG in Peg [15.8B - 18.2B ?]
================================================

S. Antipin, Sternberg Astronomical Institute, Moscow, communicates : 
"I would like to inform you about a new UG-type star in Peg. This 
star was firstly discovered by M. Kondo, T. Noguchi and H. Maehara 
(Tokyo Ann 20, No.2, p. 130, 1984) as a new blue variable object 
KUV 23012+1702. No classification is given in their work.
I independently discovered and investigated this variable on Moscow 
plates. The new variable definitely is a dwarf nova. Two kinds of 
outbursts were found : bright ones have mag 15.8B in maximum and have 
a duration of more than 8 days; faint ones have mag 16.5B in maximum 
and a duration less than 4 (or 5) days. (All magnitudes are based on 
the USNO A1.0 catalogue B-band scale).
The cycle is (very approximately) 27 days. It would be interesting
to know a brightness in minimum. In the USNO A1.0 catalogue, the
object is shown at mag 18.2B, but it's unsure if this really shows 
the star at minimum light. 
Coordinates of this object are R.A.= 23h03m41.8s, decl.= +17d17'55"
(J2000.0). This is approx. 2 degrees north of Alfa Peg. The variable 
is the NE star of a pair.
A CCD spectrum of KUV 23012+1702 was obtained by G. Wegner and 
J. Dupuis (AJ 106, No.1, p.390, 1993). According to their work the
object is sdBe, U-B=-0.7 mag."

Evidently, this object should be monitored in close detail for
future outbursts. It presumably is a new UGSU-type dwarf nova.
Further details on this object will shortly be published by 
Sergei Antipin in an IBVS issue.


CBA Belgium status
==================

Our observatory is still suffering from a major electronic failure
of its primary telescope, which started in late September. We expect
to be operational again in a few weeks.
One of our objectives for 1998 is to replace the telescope and mount
by a more reliable and larger setup.


Tonny Vanmunster

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