THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS 25 Birch Street, Cambridge, MA 02138 USA Tel. 617-354-0484 Fax 617-354-0665 INTERNET: aavso@aavso.org * * * AAVSO NEWS FLASH * * * Subject: 0206+57A TZ PER 1803+05 V426 OPH No. 326 0217+70 AM CAS 1804+67 EX DRA August 3, 1998 0605+47 SS AUR 1830-37 BP CRA 0803+62 SU UMA 1925+42 V1504 CYG 1612-54 HP NOR 1947+58 V542 CYG ---------------------------------------------------------------------------- 0206+57A TZ PERSEI The dwarf nova type (Z CAM subclass) cataclysmic variable TZ PER is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 25.079 14.5 PYG AUG 01.3944 12.9 SQN JUL 27.4319 14.4 HSG AUG 02.1361 12.7 BRJ JUL 29.4292 14.0 HSG AUG 02.3854 12.8 SQN ---------------------------------------------------------------------------- 0217+70 AM CASSIOPEIAE The dwarf nova type (Z CAM subclass) cataclysmic variable AM CAS is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 25.5396 14.4 POX AUG 01.1368 13.4 BRJ JUL 27.4188 15.2: HSG AUG 02.094 13.4 CGF JUL 29.4347 15.5: HSG AUG 02.1333 13.3 BRJ AUG 01.1090 13.5 CGF AUG 03.1993 13.8 CGF ---------------------------------------------------------------------------- 0605+47 SS AURIGAE The dwarf nova type (UG subclass) cataclysmic variable SS AUR appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 27.4382 <14.5 HSG AUG 02.374 14.0 MRV JUL 29.4688 14.7: HSG AUG 03.369 12.4 MRV ---------------------------------------------------------------------------- 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 AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 21.115 14.0 MRV AUG 02.117 12.5 MRV ---------------------------------------------------------------------------- 1612-54 HP NORMAE The dwarf nova type (Z CAM subclass) cataclysmic variable HP NOR appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 28.3750 <14.5 SRX AUG 03.3729 13.3 SRX JUL 30.4132 <14.5 SRX ---------------------------------------------------------------------------- 1803+05 V426 OPHIUCHI The dwarf nova type cataclysmic variable V426 OPH appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 27.0889 12.4 SWT AUG 02.0917 11.6 BRJ ---------------------------------------------------------------------------- 1804+67 EX DRACONIS The dwarf nova type (UG subclass) cataclysmic variable EX DRA is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials AUG 1.999 15.3 PYG AUG 02.1125 13.4 BRJ AUG 02.0951 13.6 CGF AUG 03.0917 13.0 CGF ---------------------------------------------------------------------------- 1830-37 BP CORONAE AUSTRINAE The dwarf nova type (Z CAM subclass) cataclysmic variable BP CRA appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 23.4882 15.0 SRX JUL 28.3889 14.1 SRX JUL 23.4944 14.8 WPX JUL 30.4271 13.7 SRX JUL 27.4063 <14.4 SRX AUG 03.3951 13.8 SRX ---------------------------------------------------------------------------- 1925+42 V1504 CYGNI The dwarf nova type (POSSIBLE Z CAM subclass) cataclysmic variable V1504 CYG appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 24.033 15.1 PYG AUG 2.035 14.7 PYG JUL 24.095 15.1 PYG AUG 02.1535 15.0: CGF JUL 24.999 15.3 PYG AUG 03.1042 14.3 CGF ---------------------------------------------------------------------------- 1947+58 V542 CYGNI The dwarf nova type (POSSIBLE SS CYG subclass) cataclysmic variable V542 CYG appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 29.4431 <15.2 HSG AUG 02.1153 14.2 BRJ AUG 01.3590 <14.2 SQN AUG 03.0708 13.9 CGF AUG 02.1035 14.6 CGF ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: BRJ - J. BORTLE, USA PYG - G. POYNER, ENGLAND CGF - G. CHAPLE JR., USA SQN - L. SHAW, USA HSG - G. HANSON II, USA SRX - R. STUBBINGS, AUSTRALIA MRV - R. MODIC, USA SWT - R. STEWART, USA POX - M. POXON, 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 ____________________________________________________________________________ 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 sending a message to: observations@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 We look forward to including your observations in future editions of AAVSO NEWS FLASH! ____________________________________________________________________________