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: SS Cyg, AB Dra, AH Her No. 34 EM Cyg, FG Sge July 2, 1996 ________________________________________________________________________________ SS CYGNI The dwarf nova (SS Cyg subclass prototype) cataclysmic variable SS Cyg is now fading from its current outburst (see News Flash No. 33) as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 27.9 8.6 ZAG JUN 30.2667 9.1 DIL JUN 28.1229 8.8 KMA JUN 30.2715 8.8 BTH JUN 28.1986 8.4 HSG JUN 30.2826 8.6 SQN JUN 28.2389 8.8 DIL JUN 30.3056 8.8 HSG JUN 28.2396 8.7 RR JUN 30.95 8.9 GUN JUN 28.2833 8.4 COL JUL 1.1035 8.9 SET JUN 28.8750 9.1 OJR JUL 1.2667 9.5 RR JUN 29.0 8.4 KIL JUL 1.2750 9.1 BTH JUN 29.1132 9.1: SHS JUL 1.3146 9.4 KMA JUN 29.2507 8.7 DIL JUL 1.9674 9.4 BMM JUN 29.2597 8.6 KSP JUL 2.1028 9.4 RTY JUN 29.2750 8.5 BTH JUL 2.1521 9.4 RTY JUN 29.9 8.3 KIL JUL 2.181 9.8 BEB JUN 29.9 8.4 KIL JUL 2.2167 9.8 RR JUN 30.1882 8.8 MDP JUL 2.2778 9.5 BTH JUN 30.2431 8.8 CKB We thank you for your daily observations which enabled us to confirm our prediction that this outburst would be narrow. ----------------------------------------------------------------------------- AB DRACONIS The dwarf nova type (Z Cam subclass) cataclysmic variable AB Dra appears to be in outburst as indicated by the following observations: AAVSO Observer UT Mag. Initials JUL 1.9750 13.5 BMM JUL 2.2570 12.8 BTH ----------------------------------------------------------------------------- AH HERCULIS The dwarf nova type (Z Cam subclass) cataclysmic variable AH Her is in outburst as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 27.342 14.47CCDV ZRE JUL 1.1701 11.6 HSG JUN 30.2306 13.2 BTH JUL 1.2264 11.6 BTH JUN 30.3000 13.1 DIL JUL 2.124 11.76CCDV ZRE JUN 30.3118 12.9: HSG JUL 2.2319 11.3 BTH ----------------------------------------------------------------------------- EM CYGNI The dwarf nova type (Z Cam subclass) cataclysmic variable EM Cyg is in outburst as indicated by the following observations: AAVSO Observer UT Mag. Initials JUN 27.1979 13.8 DIL JUN 28.2424 13.6: DIL JUN 30.2736 12.5 DIL JUL 1.9715 12.6 BMM ----------------------------------------------------------------------------- FG SAGITTAE FG Sge, the central star of a planetary nebula, continues to brighten (see News Flash No. 33) as indicated by the following observations: AAVSO Observer UT Mag. Initials JUN 27.182 14.46CCDV ZRE JUL 1.2979 14.3 CCDV RR JUL 2.151 13.42CCDV ZRE ----------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: BEB - R. Berg, USA KSP - S. Knight, USA BMM - M. Biesmans, Belgium MDP - P. McDonald, Canada BTH - T. Burrows, USA OJR - J. R. Osorio, Spain CKB - B. Cudnik, USA RR - R. Royer, USA COL - P. Collins, USA RTY - T. Rogers, USA DIL - W. Dillon, USA SET - C. Stephan, USA GUN - J. Gunther, France SHS - S. Sharpe, Canada HSG - G. Hanson, USA SQN - L. Shaw, USA KIL - L. Kiss, Hungary ZAG - G. Zajacz, Hungary KMA - M. A. Komorous, Canada ZRE - R. Zissell, 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! ________________________________________________________________________________