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 1608-28 V893 SCO No. 636 0854-24 VZ PYX 1831+38 LL LYR June 19, 2000 0939+52 ER UMA 1848+26 CY LYR 1109-37 V436 CEN 1925+42 V1504 CYG 1220-45 V373 CEN 1937+21 FY VUL 1508+23 NY SER 2043+41 V516 CYG ---------------------------------------------------------------------------- 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 JUN 18.597 <13.0 SRX JUN 19.558 12.6 SRX ---------------------------------------------------------------------------- 0854-24 VZ PYXIDIS The dwarf nova type (SU UMA subclass) cataclysmic variable VZ PYX is undergoing an outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 11.4493 14.9 PEX JUN 18.422 13.0 SRX JUN 17.4479 12.7 PEX JUN 19.4514 14.0 PEX ---------------------------------------------------------------------------- 0939+52 ER URSAE MAJORIS The dwarf nova type (SU UMA subclass) cataclysmic variable ER UMA is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 10.1826 <14.7 HSG JUN 17.936 12.1 RMQ JUN 10.8958 <12.9 DPV JUN 18.8874 12.90 CCD DRG JUN 11.1896 14.3 HSG ---------------------------------------------------------------------------- 1109-37 V436 CENTAURI The dwarf nova type (SU UMA subclass) cataclysmic variable V436 CEN is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 17.4535 <14.8 PEX JUN 19.443 11.9 SRX JUN 18.426 <13.4 SRX JUN 19.4569 11.9 PEX ---------------------------------------------------------------------------- 1220-45 V373 CENTAURI The dwarf nova type cataclysmic variable V373 CEN is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 08.5229 <15.2 PEX JUN 17.4542 13.5 PEX JUN 11.5028 14.6 PEX JUN 18.443 13.5 SRX JUN 11.562 14.2 SRX JUN 19.5035 13.8 PEX ---------------------------------------------------------------------------- 1508+23 NY SERPENTIS The dwarf nova type (SU UMA subclass) cataclysmic variable NY SER appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 06.961 <15.5 PYG JUN 18.974 14.9: PYG JUN 17.976 <14.7 PYG ---------------------------------------------------------------------------- 1608-28 V893 SCORPII The dwarf nova type cataclysmic variable V893 SCO is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 17.8014 <14.0 PEX JUN 19.438 12.6 SRX JUN 18.435 <13.0 SRX JUN 19.5021 12.6 PEX ---------------------------------------------------------------------------- 1831+38 LL LYRAE The dwarf nova type cataclysmic variable LL LYR is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 18.004 <14.8 PYG JUN 19.003 13.4 PYG JUN 18.90 13.3 VET JUN 19.053 13.4 PYG ---------------------------------------------------------------------------- 1848+26 CY LYRAE The dwarf nova type cataclysmic variable CY LYR appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 18.010 <14.9 PYG JUN 19.010 14.2 PYG ---------------------------------------------------------------------------- 1925+42 V1504 CYGNI The dwarf nova type (SU UMA subclass) cataclysmic variable V1504 CYG appears to be in outburst, as indicated by the following observation: AAVSO Observer UT Mag. Initials JUN 18.996 15.4 PYG ---------------------------------------------------------------------------- 1937+21 FY VULPECULAE The dwarf nova type (Z CAM subclass) cataclysmic variable FY VUL appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 18.029 14.4 PYG JUN 19.027 13.9 PYG ---------------------------------------------------------------------------- 2043+41 V516 CYGNI The dwarf nova type (SS CYG subclass) cataclysmic variable V516 CYG appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 18.023 <15.0 PYG JUN 19.022 14.5 PYG ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: DPV - P. DUBOVSKY, SLOVAKIA PYG - G. POYNER, ENGLAND DRG - R. DIETHELM, SWITZERLAND RMQ - M. RESZELSKI, POLAND HSG - G. HANSON II, USA SRX - R. STUBBINGS, AUSTRALIA PEX - A. PEARCE, AUSTRALIA VET - M. VERDENET, FRANCE 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! ____________________________________________________________________________