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: 0945+12 X LEO 1911-00 FO AQL No. 638 1004-69 OY CAR 1953+77 AB DRA June 26, 2000 1207-43 MU CEN ---------------------------------------------------------------------------- 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 JUN 23.1722 <14.9 HSG JUN 25.1694 12.4 HSG JUN 24.1674 12.2 HSG JUN 25.400 12.5 SRX JUN 24.408 12.8 SRX ---------------------------------------------------------------------------- 1004-69 OY CARINAE The dwarf nova type (SU UMA subclass) cataclysmic variable OY CAR is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 20.5653 <14.5 PEX JUN 25.398 12.8 SRX JUN 23.509 <14.0 SRX JUN 25.4410 12.8 PEX JUN 24.423 12.4 SRX ---------------------------------------------------------------------------- 1207-43 MU CENTAURI The dwarf nova type (SS CYG subclass) cataclysmic variable MU CEN is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 20.5715 14.8 PEX JUN 25.432 12.8 SRX JUN 21.7 <13.3 OB JUN 25.5153 12.7 PEX JUN 23.510 <14.0 SRX JUN 25.685 12.9 OB JUN 24.430 14.0 SRX ---------------------------------------------------------------------------- 1911-00 FO AQUILAE The dwarf nova type (SS CYG subclass) cataclysmic variable FO AQL is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 24.327 16.2 CCDV OCN JUN 26.215 13.99 CCDV OCN JUN 24.967 <14.2 RMQ JUN 26.2847 13.5 SXN JUN 25.2778 <15.4 HSG ---------------------------------------------------------------------------- 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 JUN 23.1875 14.6 HSG JUN 25.1819 12.7 HSG JUN 23.922 12.7 RMQ JUN 25.3500 12.3 LMK JUN 24.952 12.4 RMQ JUN 25.3549 12.4 LMK ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: HSG - G. HANSON II, USA PEX - A. PEARCE, AUSTRALIA LMK - M. LINNOLT, USA RMQ - M. RESZELSKI, POLAND OB - M. OVERBEEK, SOUTH AFRICA SRX - R. STUBBINGS, AUSTRALIA OCN - S. O'CONNOR, CANADA 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! ____________________________________________________________________________