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THE ASTRONOMER Electronic Circular No 1767      2002 Apr 20 18.40UT
Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise,  Basingstoke,
Hants, RG22 4PP,England.Telephone/FAX(01256)471074Int:+441256471074
INTERNET: GUY@TAHQ.DEMON.CO.UK             GMH at AST.STAR.RL.AC.UK
WORLD WIDE WEB                         http://www.theastronomer.org
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TASV J0715+215
Mike Collins, Everton, Beds, England, reports his discovery of an
uncatalogued variable star in Gemini during searches for the UK
Nova/Supernova Patrol. The object, located in patrol area 67, was
first noted on photographic exposures of 2002 January 15.9UT on
Kodak 2415 with a 135mm telephoto lens when the magnitude was
estimated to be 12.3. A follow-up image of 2002 February 7.0UT
again recorded it but at magnitude 12.8. It was noted that it was
not recorded and fainter than magnitude 12.9 on photographs of 1990
January 24.1UT.
 
Nick James imaged the field on 2002 Feb 06.95667 and derived the
following position:
RA 07h 15m 7.989s +21 35' 22.13" (2000).
The object is an S-type star and catalogued in Stephenson's 1984
list as star 321. It is evidently absent from the Guide Star
Catalog.

Further estimates by Mike Collins:
1989 Oct 6.1UT, 12.7? 1992 Dec 30.0, 12.9; 1993 Oct 17.0, [12.9;
1994 Jan 2.9, [12.4; 1997 Jan 28.9, 12.8? 1997 Dec 28.0, 12.6; 2001
Feb 14.9, [12.9.
He adds that a preliminary analysis shows that the ephemeris:

JDmax = 2447805+374dxE satisfies all the observed maxima.

A chart will shortly be published on the Charts and Sequence Notes
service (CSN) and subsequently on our WWW site.

Guy M Hurst