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THE ASTRONOMER Electronic Circular No 2053      2004 Oct 30 15.29UT
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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ANTIPIN V79 (VAR 79 Peg) = 1RXS J215434.4+355023
The discovery of this new variable was announced on IBVS 5573 by S. V. 
Antipin issued on 2004 October 26. It is located at:
RA 21h 54m 33.66s DEC +35 50' 17.4" (2000).

Chris Jones, Laindon, England, reports detection of an outburst seen 
visually on 2004 October 29.806UT at magnitude 14.4 using a 0.46-m 
telescope. In response to a message relayed by Gary Poyner, Tonny 
Vanmunster, Belgium, confirmed the outburst.

Antipin surveyed the variable on 440 plates of the Moscow collection 
taken for the interval JD 2442278-50279. He noted that the light curve 
shows two kinds of outbursts: the short-lasting ones and the longer 
ones. The long-lasting outbursts with flat maxima resemble 
superoutbursts of SU UMa-type dwarf novae. The outbursts are relatively 
frequent. Second, the amplitude of variability strongly changed during 
the interval of observation: the brightness of Var 79 at minimum 
increased smoothly in 1980-1982. The photographic magnitudes changed 
within 14m.0-<18m.1 before 1980 to 14m.35-17m.0 after 1982. The only 
exception is the year 1987 when the star was fainter than 17m.1 on 
Moscow plates and appeared at b=18m.26, as measured in the GSC 2.2 
catalogue, on a POSS II blue plate. Furthermore, Antipin proposes to 
identify the new variable with the X-ray source 1RXS J215434.4+355023.

A finder chart also appears in IBVS 5573.

Guy M Hurst