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: 0124+57 KU CAS 1803+05 V426 OPH No. 666 0524-03 V1159 ORI 1841+37 AY LYR August 31, 2000 0741-12 UY PUP 1904+43 MV LYR 1552+72 SS UMI 1953+77 AB DRA ---------------------------------------------------------------------------- 0124+57 KU CASSIOPEIAE The dwarf nova type (SS CYG subclass) cataclysmic variable KU CAS is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials AUG 29.011 <15.3 PYG AUG 30.938 13.8 MUY AUG 29.079 <14.1 MGH AUG 30.954 13.8 RMQ AUG 29.889 13.9 MUY AUG 31.051 13.9 MGH AUG 29.907 13.7 RMQ AUG 31.0958 13.7 BRJ AUG 30.1035 13.7 BRJ AUG 31.2701 13.5 HSG AUG 30.869 13.3 PYG ---------------------------------------------------------------------------- 0524-03 V1159 ORIONIS The dwarf nova type (SU UMA subclass) cataclysmic variable V1159 ORI appears to be in outburst, as indicated by the following observation: AAVSO Observer UT Mag. Initials AUG 30.702 13.7 SRX ---------------------------------------------------------------------------- 0741-12 UY PUPPIS The dwarf nova type (possible Z CAM subclass) cataclysmic variable UY PUP appears to be in outburst, as indicated by the following observation: AAVSO Observer UT Mag. Initials AUG 30.752 13.8 SRX ---------------------------------------------------------------------------- 1552+72 SS URSAE MINORIS The dwarf nova type (SU UMA subclass) cataclysmic variable SS UMI appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials AUG 28.921 <15.4 PYG AUG 30.851 14.4 MUY AUG 29.1 <14.7 CGF AUG 30.906 <15.0 PYG AUG 29.849 <14.2 MUY AUG 30.950 14.0 RMQ AUG 30.0403 14.3 CGF AUG 31.2444 13.9 HSG ---------------------------------------------------------------------------- 1803+05 V426 OPHIUCHI The variable V426 OPH is brightening, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials AUG 21.1174 12.7 SXN AUG 26.855 12.4 RMQ AUG 21.863 12.7 MUY AUG 27.8174 12.1 DPV AUG 22.844 12.7 MUY AUG 27.851 11.9 MUY AUG 22.862 12.8 RMQ AUG 27.853 12.4 RMQ AUG 23.8236 12.5 DPV AUG 28.1270 12.4 BEB AUG 23.862 12.6 MUY AUG 28.482 12.0 SRX AUG 23.890 12.8 RMQ AUG 28.837 11.9 MUY AUG 24.1424 12.2 SXN AUG 29.0928 11.8 BEB AUG 24.922 12.6 MUY AUG 29.2084 11.8 BEB AUG 25.06 13.1 BRJ AUG 29.851 11.7 MUY AUG 25.1208 12.5 SXN AUG 30.0597 11.7 BRJ AUG 25.851 12.4 RMQ AUG 30.853 11.7 MUY AUG 25.858 12.6 MUY AUG 30.871 11.8 RMQ AUG 26.06 12.3 BRJ AUG 30.914 11.4 MGH AUG 26.830 11.8 RMQ AUG 31.0632 11.7 BRJ AUG 26.850 12.4 MUY AUG 31.0908 11.7 BEB ---------------------------------------------------------------------------- 1841+37 AY LYRAE The dwarf nova type (SU UMA subclass) cataclysmic variable AY LYR is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials AUG 28.9028 <15.3 JCN AUG 30.0694 13.1 BRJ AUG 28.928 <15.3 PYG AUG 30.856 13.3 MUY AUG 28.999 <14.2 MGH AUG 30.889 13.9 RMQ AUG 29.1 <14.2 CGF AUG 30.911 13.3 PYG AUG 29.82 13.7 KTO AUG 30.926 13.2 MGH AUG 29.845 13.6 RMQ AUG 30.9361 13.3 POX AUG 29.854 13.8 MUY AUG 31.0611 13.4 BRJ AUG 29.8660 13.5 JCN AUG 31.0694 13.2 DPL AUG 29.899 13.1 MGH AUG 31.1243 13.5 SXN AUG 30.0486 13.4 CGF AUG 31.2236 13.8 AAP AUG 30.0541 13.4 DPL AUG 31.2521 13.5 HSG ---------------------------------------------------------------------------- 1904+43 MV LYRAE The variable MV LYR is brightening, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials AUG 25.845 16.0: RMQ AUG 29.856 14.0 MUY AUG 25.864 <14.0 MUY AUG 30.0708 14.1 BRJ AUG 26.853 <14.0 MUY AUG 30.0847 13.8 TSC AUG 26.861 <15.7 RMQ AUG 30.858 13.9 MUY AUG 26.943 <15.2 PYG AUG 30.891 13.7 RMQ AUG 27.854 <14.0 MUY AUG 30.914 13.9 PYG AUG 28.856 <14.0 MUY AUG 31.0625 14.0 BRJ AUG 28.931 14.2 PYG AUG 31.1299 14.0 SXN AUG 29.04 13.7 VET AUG 31.2556 14.2 HSG AUG 29.840 13.9 RMQ ---------------------------------------------------------------------------- 1953+77 AB DRACONIS The dwarf nova type (Z CAM subclass) cataclysmic variable AB DRA is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials AUG 30.0 14.3 CGF AUG 30.948 13.3 RMQ AUG 30.0847 14.7 BRJ AUG 31.0653 13.8 CGF AUG 30.847 13.4 MUY AUG 31.0764 13.1 BRJ AUG 30.908 14.4 PYG AUG 31.2424 13.6 HSG AUG 30.9347 13.3 POX ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: AAP - A. ABBOTT, CANADA MGH - H. MCGEE, ENGLAND BEB - R. BERG, USA MUY - E. MUYLLAERT, BELGIUM BRJ - J. BORTLE, USA POX - M. POXON, ENGLAND CGF - G. CHAPLE JR., USA PYG - G. POYNER, ENGLAND DPL - P. DOMBROWSKI, USA RMQ - M. RESZELSKI, POLAND DPV - P. DUBOVSKY, SLOVAKIA SRX - R. STUBBINGS, AUSTRALIA HSG - G. HANSON II, USA SXN - M. SIMONSEN, USA JCN - C. JONES, ENGLAND TSC - S. TRACY, USA KTO - T. KINNUNEN, FINLAND VET - M. VERDENET, FRANCE 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! ____________________________________________________________________________