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: 0814+73 Z CAM 1521+08 QW SER No. 641 0905+51 DI UMA 1615-59 RT NOR July 6, 2000 1120-35 V442 CEN ---------------------------------------------------------------------------- 0814+73 Z CAMELOPARDALIS The dwarf nova type (Z CAM subclass prototype) cataclysmic variable Z CAM is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 05.1819 13.3 HSG JUL 06.1660 11.6 HSG JUL 05.2 13.3 CGF JUL 06.2313 11.5 HSG JUL 05.89 11.6 GUN JUL 06.4285 10.9 HSG JUL 06.1236 11.6 CGF ---------------------------------------------------------------------------- 0905+51 DI URSAE MAJORIS The dwarf nova type cataclysmic variable DI UMA may be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 05.1882 <15.5 HSG JUL 06.1764 15.4: HSG ---------------------------------------------------------------------------- 1120-35 V442 CENTAURI The dwarf nova type (SS CYG subclass) cataclysmic variable V442 CEN appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 04.381 <14.4 SRX JUL 06.432 12.6 SRX ---------------------------------------------------------------------------- 1521+08 QW SERPENTIS (TMZ V46) The dwarf nova type cataclysmic variable QW SER is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 02.950 <14.3 RMQ JUL 05.990 12.5 SPK JUL 04.97 <12.8 SPK JUL 06.446 12.6 SRX JUL 05.941 12.4 SPK ---------------------------------------------------------------------------- 1615-59 RT NORMAE The dwarf nova type (R CrB subclass) cataclysmic variable RT NOR appears to be fading, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 26.7 10.0 OB JUL 04.0 11.1 OB JUN 29.9 10.0 OB JUL 04.7 11.5 OB ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: CGF - G. CHAPLE JR., USA RMQ - M. RESZELSKI, POLAND GUN - J. GUNTHER, FRANCE SPK - P. SCHMEER, GERMANY HSG - G. HANSON II, USA SRX - R. STUBBINGS, AUSTRALIA OB - M. OVERBEEK, SOUTH AFRICA 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! ____________________________________________________________________________