THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS 25 Birch Street, Cambridge, MA 02138 USA Tel. 617-354-0484 Fax 617-354-0665 http://www.aavso.org * * * AAVSO NEWS FLASH * * * Subject: 0803+62 SU UMA 1612-54 HP NOR No. 483 1307-60 NN CEN 2101+65 FX CEP August 17, 1999 ---------------------------------------------------------------------------- 0803+62 SU URSAE MAJORIS The dwarf nova type (SU UMA subclass prototype) cataclysmic variable SU UMA appears to be in outburst, as indicated by the following observations: AAVSO Observer UT Mag. Initials AUG 16.96 12.8 KTO According to the AAVSO International Database this star is fainter than visual magnitude 13.8 during quiescence. ---------------------------------------------------------------------------- 1307-60 NN CENTAURI The dwarf nova type (SS CYG subclass) cataclysmic variable NN CEN appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials AUG 11.4708 15.0 SRX AUG 15.4173 13.8 WPX AUG 14.3903 14.2 SRX AUG 16.4312 13.7 WPX ---------------------------------------------------------------------------- 1612-54 HP NORMAE The dwarf nova type (Z CAM subclass) cataclysmic variable HP NOR is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials AUG 11.4548 <14.5 WPX AUG 15.4256 13.5 WPX AUG 11.4958 <14.0 SRX AUG 16.4437 14.0 WPX AUG 14.3993 13.6 SRX ---------------------------------------------------------------------------- 2101+65 FX CEPHEI The dwarf nova type cataclysmic variable FX CEP may be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials AUG 14.945 <15.8 PYG AUG 16.92 15.7 KTO AUG 15.910 <15.4 PYG AUG 16.923 <15.2 PYG AUG 16.00 15.4 KTO ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: KTO - T. KINNUNEN, FINLAND SRX - R. STUBBINGS, AUSTRALIA PYG - G. POYNER, ENGLAND WPX - P. WILLIAMS, NEW ZEALAND Please monitor these and other variable stars closely and phone-in, fax, or e-mail your observations to the AAVSO. Good observing! Janet A. Mattei, Director Rebecca Pellock, Technical Assistant ____________________________________________________________________________ Symbols may include: < = fainter than magnitude given (variable not seen) : = uncertain CCDV = Charge-coupled device with (V) filter If you would like to contribute to AAVSO NEWS FLASH, please send observations of unusual variable star activity to: observations@aavso.org Those who wish to subscribe (free of charge) or unsubscribe to NEWS FLASH may do so by visiting the following web page: http://www.aavso.org If you would like data from the AAVSO International Database for research purposes, please send your request to: Janet Mattei, AAVSO Director, at aavso@aavso.org An archive of past issues of the News Flash is available at the following web page: http://www.aavso.org/newsflash/ We look forward to including your observations in future editions of AAVSO NEWS FLASH! ____________________________________________________________________________