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: 0853-70 SY VOL 1723-46 AT ARA No. 1198 1552+72 SS UMI 1911-00 FO AQL July 16, 2003 ---------------------------------------------------------------------------- 0853-70 SY VOLANTIS The dwarf nova type cataclysmic variable SY VOL may be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 02.3950 <14.8 SRX JUL 06.3760 <14.4 SRX JUL 03.3810 <14.8 SRX JUL 16.3660 14.6 SRX ---------------------------------------------------------------------------- 1552+72 SS URSAE MINORIS The dwarf nova type (SU UMA subclass) cataclysmic variable SS UMI appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 13.9375 17.6 CCD RZD JUL 16.0630 14.1 PYG JUL 13.9810 <14.7 PYG JUL 16.0903 14.5: CGF JUL 14.9900 <15.4 PYG JUL 16.1875 14.3 TDB JUL 15.1757 <14.7 TDB JUL 15.9860 14.0 PYG ---------------------------------------------------------------------------- 1723-46 AT ARAE The dwarf nova type (SS CYG subclass) cataclysmic variable AT ARA appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 05.4340 <15.0 LMK JUL 11.4271 <13.5 LMK JUL 06.4020 <14.0 SRX JUL 13.5620 <13.0 SRX JUL 08.4160 <13.6 SRX JUL 16.3720 13.6 SRX ---------------------------------------------------------------------------- 1911-00 FO AQUILAE The dwarf nova type (SS CYG subclass) cataclysmic variable FO AQL appears to be brightening, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 13.0370 <14.5 PYG JUL 15.0100 <14.5 PYG JUL 13.3965 <14.2 LMK JUL 16.0060 <14.5 PYG JUL 14.0450 <14.5 PYG JUL 16.3021 14.1 LMK ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: CGF - G. CHAPLE JR., USA RZD - D. RODRIGUEZ, SPAIN LMK - M. LINNOLT, USA SRX - R. STUBBINGS, AUSTRALIA PYG - G. POYNER, ENGLAND TDB - D. TAYLOR, 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 Gamze Menali, 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! ____________________________________________________________________________