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 1051+50 CY UMA No. 970 0547-05 CN ORI 1140-03 TW VIR May 28, 2002 0803+62 SU UMA 1153-41 V359 CEN 0945+12 X LEO 1338-07 HS VIR ---------------------------------------------------------------------------- 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 25.3990 <13.0 SRX MAY 28.4090 8.9 SRX MAY 28.3820 8.9 SRX ---------------------------------------------------------------------------- 0547-05 CN ORIONIS The dwarf nova type (Z CAM subclass) cataclysmic variable CN ORI appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 13.3560 13.8 SRX MAY 24.3600 12.6 SRX ---------------------------------------------------------------------------- 0803+62 SU URSAE MAJORIS The dwarf nova type (SU UMA subclass prototype) cataclysmic variable SU UMA is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 21.9701 14.1 RMQ MAY 26.9380 11.9 PYG MAY 22.1292 14.55 CCDV GKA MAY 27.1528 11.8 SXN ---------------------------------------------------------------------------- 0945+12 X LEONIS The dwarf nova type cataclysmic variable X LEO is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 22.1194 16.72 CCDV GKA MAY 27.3680 12.5 SRX MAY 23.4300 <12.5 SRX MAY 27.3810 12.5 SRX MAY 24.3740 <12.5 SRX MAY 28.2951 12.4: LMK MAY 24.4310 <13.0 NLX MAY 28.3580 12.5 SRX MAY 25.3900 <12.5 SRX ---------------------------------------------------------------------------- 1051+50 CY URSAE MAJORIS The dwarf nova type (SU UMA subclass) cataclysmic variable CY UMA appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 20.8785 16.8 CCD DRG MAY 22.9340 13.1: MGH MAY 21.1013 <14.0 TSC MAY 23.0847 <13.5 TSC MAY 22.1410 <14.8 TDB MAY 27.8740 12.8 SPK ---------------------------------------------------------------------------- 1140-03 TW VIRGINIS The dwarf nova type cataclysmic variable TW VIR appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 24.0644 15.7 CCDV HDU MAY 27.3650 12.5 SRX MAY 24.1847 <13.9 GTN MAY 27.3770 12.5 SRX MAY 24.3830 <13.2 SRX MAY 28.3580 12.6 SRX MAY 25.3690 <13.0 SRX ---------------------------------------------------------------------------- 1153-41 V359 CENTAURI The dwarf nova type cataclysmic variable V359 CEN appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 16.3870 <14.8 SRX MAY 27.4100 <13.8 SRX MAY 19.6860 <13.8 SRX MAY 28.3620 13.8 SRX MAY 24.3880 <13.8 SRX MAY 28.3800 13.8 SRX MAY 25.3990 <13.8 SRX MAY 28.4060 13.8 SRX ---------------------------------------------------------------------------- 1338-07 HS VIRGINIS The dwarf nova type cataclysmic variable HS VIR appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 19.6090 <14.8 PEX MAY 28.3660 14.2 SRX MAY 21.1305 <13.6 TSC MAY 28.4030 14.0 SRX MAY 23.1021 <13.5 TSC ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: DRG - R. DIETHELM, SWITZERLAND PYG - G. POYNER, ENGLAND GKA - K. GRAHAM, USA RMQ - M. RESZELSKI, POLAND GTN - T. GANDET, USA SPK - P. SCHMEER, GERMANY HDU - D. HURDIS, USA SRX - R. STUBBINGS, AUSTRALIA LMK - M. LINNOLT, USA SXN - M. SIMONSEN, USA MGH - H. MCGEE, ENGLAND TDB - D. TAYLOR, CANADA NLX - P. NELSON, AUSTRALIA TSC - S. TRACY, USA PEX - A. PEARCE, AUSTRALIA 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! ____________________________________________________________________________