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 * * * 2138+43 SS CYG No. 690 0130+50 KT PER 0641+28 IR GEM November 1, 2000 0206+57A TZ PER 0945+12 X LEO 0547-05 CN ORI 1805-14 UZ SER 0640-16 HL CMA 1953+77 AB DRA ---------------------------------------------------------------------------- 2138+43 SS CYGNI ASTRONOMERS WILL OBSERVE THE CURRENT OUTBURST OF SS CYGNI WITH THE FAR ULTRAVILOET SPECTROSCOPIC EXPLORER (FUSE) SATELLITE! The dwarf nova type (SS CYG subclass prototype) cataclysmic variable SS CYG is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials OCT 30.0104 11.9 GSR OCT 31.9319 11.5 BXA OCT 30.0174 11.8 WSV OCT 31.9458 11.4 BXA OCT 30.0410 12.0 GMB NOV 01.0104 11.5 WSV OCT 30.0472 12.1 BVE NOV 01.0381 11.3 WSV OCT 30.1042 11.8 KB NOV 01.1180 10.9 BEU OCT 30.1159 12.0 MDW NOV 01.1354 11.0 WSV OCT 30.3666 11.6 LMK NOV 01.1354 11.2 MDP OCT 30.819 12.1 MUY NOV 01.1388 11.1 RR OCT 30.8892 12.1 BXA NOV 01.1431 11.2 KMA OCT 31.0326 12.0 BVE NOV 01.1458 11.0 KB OCT 31.0493 11.8 CWO NOV 01.1500 11.2 CCDV JM OCT 31.0521 11.8 WSV NOV 01.1631 11.0 WSV OCT 31.0562 <11.0 BEU NOV 01.1674 11.2 SVD OCT 31.1139 11.9 AAP NOV 01.1674 10.9 MDP OCT 31.1400 12.3 SFS NOV 01.2222 11.21 CCDV OCN OCT 31.2000 11.9 SXN NOV 01.2368 11.13 CCDV OCN OCT 31.2569 11.90 CCDV OCN NOV 01.261 11.17 CCDV OCN OCT 31.3361 11.8 LMK NOV 01.270 11.17 CCDV OCN OCT 31.753 11.8 MUY NOV 01.287 11.11 CCDV OCN OCT 31.77 11.5 VET NOV 01.7194 10.1 FSE OCT 31.772 11.9 OJR NOV 01.728 9.8 KHL OCT 31.8080 11.5 HHU Our colleagues at Space Telescope Science Institute, John Hopkins University, and NASA Goddard Space Flight Center will be observing SS Cyg throughout this outburst and have requested that we inform them of the brightness of SS Cyg during its rise to maximum, maximum, and decline until it reaches minimum again. Your observations are vital in determining whether this is a wide or narrow outburst and in scheduling FUSE observations throughout the outburst. Please monitor SS Cygni closely and keep us informed. ---------------------------------------------------------------------------- 0130+50 KT PERSEI The dwarf nova type (Z CAM subclass) cataclysmic variable KT PER is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials OCT 30.836 <14.3 MUY OCT 31.941 12.4 OJR OCT 31.2438 12.7 SXN NOV 01.136 12.0 RMQ OCT 31.774 12.8 MUY NOV 01.2326 12.6 SXN OCT 31.78 12.7 VET ---------------------------------------------------------------------------- 0206+57A TZ PERSEI The dwarf nova type (Z CAM subclass) cataclysmic variable TZ PER appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials OCT 29.723 14.1 RMQ OCT 31.951 <14.0 OJR OCT 29.805 <14.0 OJR NOV 01.137 13.8 RMQ OCT 31.2500 <14.0 SXN NOV 01.2424 13.2 SXN OCT 31.772 <13.6 MUY ---------------------------------------------------------------------------- 0547-05 CN ORIONIS The dwarf nova type (Z CAM subclass) cataclysmic variable CN ORI is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials OCT 27.624 14.2 SRX NOV 01.146 13.0: RMQ OCT 27.778 <13.8 PEX NOV 01.2854 12.8 SXN OCT 30.781 12.8 PEX ---------------------------------------------------------------------------- 0640-16 HL CANIS MAJORIS The dwarf nova type (Z CAM subclass) cataclysmic variable HL CMA is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials OCT 27.787 <12.7 PEX NOV 01.149 12.3 RMQ OCT 30.803 11.8 PEX ---------------------------------------------------------------------------- 0641+28 IR GEMINORUM The dwarf nova type (SU UMA subclass) cataclysmic variable IR GEM is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials OCT 23.975 <15.0 RMQ NOV 01.154 11.9 RMQ OCT 28.999 <13.6 MGH NOV 01.2965 12.2 SXN ---------------------------------------------------------------------------- 0945+12 X LEONIS The dwarf nova type cataclysmic variable X LEO appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials OCT 17.176 <13.5 MUY NOV 01.158 12.2 RMQ ---------------------------------------------------------------------------- 1805-14 UZ SERPENTIS The dwarf nova type (possible Z CAM subclass) cataclysmic variable UZ SER appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials OCT 27.433 <14.0 SRX OCT 31.75 12.6 VET ---------------------------------------------------------------------------- 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 OCT 29.717 13.4 RMQ OCT 31.769 12.6 OJR OCT 29.767 13.4 OJR NOV 01.167 12.7 RMQ OCT 31.734 13.1 MUY ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: AAP - A. ABBOTT, CANADA MDW - W. MACDONALD II, CANADA BEU - E. BLANKENSHIP, USA MGH - H. MCGEE, ENGLAND BVE - E. VAN BALLEGOIJ, NETHERLANDS MUY - E. MUYLLAERT, BELGIUM BXA - A. BARANSKY, UKRAINE OCN - S. O'CONNOR, CANADA CWO - W. CASTRO, USA OJR - J. OSORIO, SPAIN FSE - S. FOGLIA, ITALY PEX - A. PEARCE, AUSTRALIA GMB - M. GABLE, USA RMQ - M. RESZELSKI, POLAND GSR - R. GESCHWIND, USA RR - R. ROYER, USA HHU - H. HAUTECLER, BELGIUM SFS - S. SCHIFF, USA JM - R. JAMES, USA SRX - R. STUBBINGS, AUSTRALIA KB - W. KAMINSKI, USA SVD - V. STEBLINA, USA KHL - M. KOHL, SWITZERLAND SXN - M. SIMONSEN, USA KMA - M. KOMOROUS, CANADA VET - M. VERDENET, FRANCE LMK - M. LINNOLT, USA WSV - S. WOLFE, USA MDP - P. MCDONALD, CANADA 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! ____________________________________________________________________________