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: 0207-63 WX HYI 1848+26 CY LYR No. 1202 1719-35 V478 SCO 2138+43 SS CYG July 22, 2003 1804+67 EX DRA 2158+41 BL LAC 1841+37 AY LYR ---------------------------------------------------------------------------- 0207-63 WX HYDRI The dwarf nova type (SU UMA subclass) cataclysmic variable WX HYI appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 08.6910 14.6 SRX JUL 21.6120 <13.7 SRX JUL 13.5530 <12.5 SRX JUL 22.5740 13.7 SRX ---------------------------------------------------------------------------- 1719-35 V478 SCORPII The dwarf nova type cataclysmic variable V478 SCO appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 21.4200 <14.8 SRX JUL 22.4030 14.9 SRX JUL 22.3264 <14.2 LMK JUL 22.4430 14.9 SRX ---------------------------------------------------------------------------- 1804+67 EX DRACONIS The eclipsing dwarf nova type cataclysmic variable EX DRA appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 21.9319 <14.5 OJR JUL 22.2438 13.9 SXN ---------------------------------------------------------------------------- 1841+37 AY LYRAE The dwarf nova type (SU UMA subclass) cataclysmic variable AY LYR is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 21.2708 <14.2 AAP JUL 22.0150 13.5 PYG JUL 21.8750 13.3 GUN JUL 22.0880 13.3 PYG JUL 21.8944 13.0 OJR JUL 22.2076 13.8 SXN JUL 21.9690 13.1 MGH JUL 22.2722 13.8 AAP ---------------------------------------------------------------------------- 1848+26 CY LYRAE The dwarf nova type cataclysmic variable CY LYR is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 21.9670 <14.0 MGH JUL 22.2792 <14.0 AAP JUL 22.1931 14.5 SXN JUL 22.2854 14.0 LMK ---------------------------------------------------------------------------- 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 JUL 20.0060 12.0 PYG JUL 21.8785 10.1 OJR JUL 20.1403 11.4 CGF JUL 21.8792 10.2 OJR JUL 20.1465 11.9 MHI JUL 21.8819 10.3 CCU JUL 20.1931 11.8 BWX JUL 21.9000 10.1 SPK JUL 20.8576 11.3 CCU JUL 21.9549 9.8 OJR JUL 20.8694 10.5 GUN JUL 21.9556 9.9 OJR JUL 20.9139 11.1 OJR JUL 21.9830 9.9 SPK JUL 20.9153 11.2 POX JUL 22.0440 10.0 PYG JUL 20.9600 11.7 GRL JUL 22.0890 9.8 PYG JUL 21.0620 11.7 SPK JUL 22.2472 9.6 SGE JUL 21.3174 11.2 AAP JUL 22.2875 9.7 RR JUL 21.8375 10.1 KYU JUL 22.3556 8.6 AAP JUL 21.8681 9.3 GUN ---------------------------------------------------------------------------- 2158+41 BL LACERTAE The variable BL LAC is brightening, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 20.0080 14.7 PYG JUL 22.0470 14.0 PYG JUL 20.9146 <14.3 OJR JUL 22.3167 14.0 RR JUL 21.8986 14.1 OJR ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: AAP - A. ABBOTT, CANADA MHI - H. MENALI, USA BWX - A. BEATON, CANADA OJR - J. OSORIO, SPAIN CCU - C. CREMASCHINI, ITALY POX - M. POXON, ENGLAND CGF - G. CHAPLE JR., USA PYG - G. POYNER, ENGLAND GRL - B. GRANSLO, NORWAY RR - R. ROYER, USA GUN - J. GUNTHER, FRANCE SGE - G. SARTY, CANADA KYU - Y. KUZNETSOV, UKRAINE SPK - P. SCHMEER, GERMANY LMK - M. LINNOLT, USA SRX - R. STUBBINGS, AUSTRALIA MGH - H. MCGEE, ENGLAND SXN - M. SIMONSEN, 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, Director Rebecca Pellock, 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! ____________________________________________________________________________