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: 1552+72 SS UMI 2023+43 V503 CYG No. 460 1951-09 UU AQL July 1, 1999 ---------------------------------------------------------------------------- 1552+72 SS URSAE MINORIS The dwarf nova type (SU UMA subclass) cataclysmic variable SS UMI is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 21.982 <15.0 PYG JUN 29.972 13.7 PYG JUN 24.939 <14.2 MUY JUL 01.1826 14.0 HSG ---------------------------------------------------------------------------- 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 19.213 16.7 OCN JUN 26.264 11.8 MR JUN 19.311 16.7 OCN JUN 27.134 11.4 OB JUN 19.3201 <13.9 SXN JUN 27.2630 12.05 ZRE JUN 21.981 <13.9 MUY JUN 27.292 11.7 OCN JUN 22.2600 14.95 CCDV ZRE JUN 27.950 11.7 MUY JUN 24.993 <13.9 MU JUN 30.334 11.8 MRV JUN 25.9 <12.6 OB ---------------------------------------------------------------------------- 2023+43 V503 CYGNI The dwarf nova type (SU UMA subclass) cataclysmic variable V503 CYG appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 27.2920 19.69 ZRE JUN 30.005 14.4 PYG ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: HSG - G. HANSON II, USA OB - M. OVERBEEK, SOUTH AFRICA MR - R. MENDE, W. GERMANY OCN - S. O'CONNOR, CANADA MRV - R. MODIC, USA PYG - G. POYNER, ENGLAND MU - A. MURPHY, USA SXN - M. SIMONSEN, USA MUY - E. MUYLLAERT, BELGIUM 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! Kerriann Malatesta, Technical Assistant on behalf of Janet A. Mattei, Director ____________________________________________________________________________ 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! ____________________________________________________________________________