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THE ASTRONOMER Electronic Circular No 1650       2001 June 21 20.01UT
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.demon.co.uk/astronomer
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NOVALIKE VARIABLE IN SCORPIUS
     K. Haseda, Toyohasi, Aichi, Japan, reports his discovery of a
novalike variable star on T-Max 400 films taken with a 0.10-m f/4
twin patrol camera.  K. Kadota, Ageo, Saitama, provides the
following position for the variable from Haseda's discovery
photograph:  R.A. = 17h57m06s.98, Decl. = -32o23'05".0 (equinox
2000.0).  H. Yamaoka, Kyushu University, reports that Digital Sky
Survey images show a dim star near this position with red mag about
17.5 and blue mag about 20.  Haseda's patrol films indicate that
the star was fainter than mag 12.0-12.9 (not seen) on 27 dates
spanning 1996 Mar. 26-2001 Apr. 22.744 UT; it was detected on his
films at the following magnitudes during the past month:  May
13.617, 10.5; 17.664, 11.0; 28.624, 10.5; June 15.661, 10.4.  K.
Takamizawa, Saku-machi, Nagano, Japan, reports the following
prediscovery observations on his unfiltered T-Max 400 patrol
films:  Apr. 26.737, [12.9; May 12.643, 10.2; 16.698, 11.2; 20.692,
11.0; 25.660, 10.3.  T. Kato, Kyoto University, adds that Kadota
found no object brighter than mag 14 on a CCD image taken on 2000
Feb. 24.842, and that a search of the 2MASS and MSX5C catalogs has
not revealed any likely counterpart.
     W. Liller, Vina del Mar, Chile, reports that he measured a
broadband V magnitude of 10.68 +/- 0.03 on June 21.150 UT, using
nearby GSC 7382837 (V = 9.87, B-V = +0.44).  A low-dispersion
objective-prism spectrogram recorded with the CCD shows a very
intense red line, presumably H-alpha, that is about 5 times the
brightness of the surrounding continuum.  H-beta appears to be
weakly present, indicating that the star is substantially reddened.

IAUC 7647

Denis Buczynski




-- 
Denis Buczynski