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 1140-03 TW VIR No. 307 0749+22 U GEM 1951-09 UU AQL June 3, 1998 0855+18 SY CNC 2138+43 SS CYG ---------------------------------------------------------------------------- 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 JUN 01.005 <13.8 PYG JUN 03.4056 13.0 HSG ---------------------------------------------------------------------------- 0749+22 U GEMINORUM The dwarf nova type (SS CYG subclass) cataclysmic variable U GEM is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 27.1833 14.2: HSG JUN 03.1236 9.4 HAB JUN 02.0833 9.1 CGF ---------------------------------------------------------------------------- 0855+18 SY CANCRI The dwarf nova type (Z CAM subclass) cataclysmic variable SY CNC may be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 28.0917 13.2 BRJ JUN 02.0965 12.7 BRJ MAY 29.1889 13.0 HSG ---------------------------------------------------------------------------- 1140-03 TW VIRGINIS The dwarf nova type (UG subclass) cataclysmic variable TW VIR is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 29.1100 15.12 CCDV ZRE JUN 02.0960 13.92 CCDV ZRE MAY 29.1875 14.9: HSG JUN 02.3750 13.6 SRX ---------------------------------------------------------------------------- 1951-09 UU AQUILAE The dwarf nova type (UG subclass) cataclysmic variable UU AQL is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 01.3576 <15.2 HSG JUN 02.974 11.3 OB JUN 02.0 <12.6 OB JUN 03.3868 12.4 HSG JUN 02.5764 11.5 SRX ---------------------------------------------------------------------------- 2138+43 SS CYGNI 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 MAY 30.017 12.1 PYG JUN 01.8472 10.5 TUB MAY 30.0229 11.6 BMM JUN 01.8854 10.4 TUB MAY 30.2875 12.0 DIL JUN 01.9097 10.4 TUB MAY 30.4021 11.7 HSG JUN 01.950 10.5 CMG MAY 30.93 12.1 BXA JUN 02.1153 10.9 BRJ MAY 30.9667 11.5 BMM JUN 02.9097 10.3 TUB MAY 31.4236 11.7 SQN JUN 02.9990 10.4 SJZ MAY 31.98 10.9 BXA JUN 03.2624 10.2 BEB MAY 31.9910 11.0 BMM JUN 03.3486 10.2 KMA JUN 01.1931 11.0 KMA JUN 03.3569 10.5 HAB JUN 01.3583 10.9 HSG JUN 03.3833 10.3 HSG The slow rise to maximum indicates that this may be an anomalous outburst. ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: BEB - R. BERG, USA KMA - M. KOMOROUS, CANADA BMM - M. BIESMANS, BELGIUM OB - M. OVERBEEK, SOUTH AFRICA BRJ - J. BORTLE, USA PYG - G. POYNER, ENGLAND BXA - A. BARANSKY, UKRAINE SJZ - J. SPEIL, POLAND CGF - G. CHAPLE JR., USA SQN - L. SHAW, USA CMG - G. COMELLO, HOLLAND SRX - R. STUBBINGS, AUSTRALIA DIL - W. DILLON, USA TUB - V. TUBOLY, HUNGARY HAB - R. HAYS JR., USA ZRE - R. ZISSELL, USA HSG - G. HANSON, USA 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! ___________________________________________________________________________