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: 0409-71 VW HYI 1608-28 V893 SCO No. 1161 0636-24 PU CMA 1640+25 AH HER May 19, 2003 0854-41 CU VEL 1804+67 EX DRA 1140-03 TW VIR 1953+77 AB DRA ---------------------------------------------------------------------------- 0409-71 VW HYDRI The dwarf nova type (SU UMA subclass) cataclysmic variable VW HYI appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 10.4350 13.8 SRX MAY 18.3700 9.6 SRX MAY 12.7530 <13.5 SRX ---------------------------------------------------------------------------- 0636-24 PU CANIS MAJORIS The dwarf nova type cataclysmic variable PU CMA appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 04.3790 <14.4 SRX MAY 18.3530 11.8 SRX MAY 10.4080 <13.0 SRX ---------------------------------------------------------------------------- 0854-41 CU VELORUM The dwarf nova type (SU UMA subclass) cataclysmic variable CU VEL appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 10.4100 <14.0 SRX MAY 18.3920 11.4 SRX ---------------------------------------------------------------------------- 1140-03 TW VIRGINIS The dwarf nova type cataclysmic variable TW VIR is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 18.1438 <14.3 SXN MAY 18.4438 13.4 MTH MAY 18.3780 13.0 SRX MAY 19.2569 12.6 LMK ---------------------------------------------------------------------------- 1608-28 V893 SCORPII The dwarf nova type cataclysmic variable V893 SCO appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 14.4354 <14.0 LMK MAY 19.3438 12.7 LMK MAY 18.3890 <13.0 SRX ---------------------------------------------------------------------------- 1640+25 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 MAY 14.9560 13.5 PYG MAY 18.9319 12.4 GCO MAY 14.9882 13.5 GCO MAY 19.0520 11.6 OCR MAY 18.1333 12.5 CGF MAY 19.1111 12.5 CGF MAY 18.1819 12.4 SXN ---------------------------------------------------------------------------- 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 MAY 11.9790 14.9 PYG MAY 14.9800 <14.5 PYG MAY 12.9790 <15.1 PYG MAY 18.1188 13.7 CGF MAY 14.2118 <14.5 SXN MAY 19.1104 14.0 CGF ---------------------------------------------------------------------------- 1953+77 AB DRACONIS The dwarf nova type (Z CAM subclass) cataclysmic variable AB DRA is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 14.9400 <14.4 PYG MAY 19.0590 12.8 OCR MAY 18.1181 12.8 CGF MAY 19.1340 12.7 CGF ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: CGF - G. CHAPLE JR., USA OCR - C. OTTEN, BELGIUM GCO - C. GUALDONI, ITALY PYG - G. POYNER, ENGLAND LMK - M. LINNOLT, USA SRX - R. STUBBINGS, AUSTRALIA MTH - H. MATSUYAMA, JAPAN 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! ____________________________________________________________________________