THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS 25 Birch Street, Cambridge, MA 02138 USA Tel. 617-354-0484 Fax 617-354-0665 INTERNET: aavso@aavso.org * * * AAVSO NEWS FLASH * * * Subject: VW Hyi, WX Hyi, KT Per, SU UMa No. 261 February 17, 1998 ________________________________________________________________________________ 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 FEB 14.4708 13.7 SRX FEB 16.5340 10.3 SRX FEB 16.4618 11.6 SRX FEB 17.4493 9.5 SRX FEB 16.5076 10.4 SRX ---------------------------------------------------------------------------- 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 FEB 14.4368 14.4 SRX FEB 16.4965 13.8 SRX FEB 16.4576 13.9 SRX FEB 16.5326 13.9 SRX FEB 16.4875 13.8 SRX FEB 17.4479 12.3 SRX ---------------------------------------------------------------------------- KT PERSEI The dwarf nova type (Z Cam subclass) cataclysmic variable KT Per is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 13.815 14.6: PYG FEB 15.9750 12.0 CGF FEB 14.0 <13.8 CGF FEB 16.0215 12.3 SWT FEB 15.0854 13.5 CGF FEB 16.0305 12.1 TSC FEB 15.1222 13.0 SWT ---------------------------------------------------------------------------- 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 FEB 13.874 14.2 PYG FEB 16.1139 12.0 SWT FEB 14.1951 <14.0 SWT FEB 16.823 12.3 WDM FEB 15.1903 13.9 SWT FEB 17.1368 12.4 HSG ----------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: CGF - G. Chaple, USA SWT - R. Stewart, USA HSG - G. Hanson, USA TSC - S. Tracy, USA PYG - G. Poyner, England WDM - M. Westlund, Sweden SRX - R. Stubbings, 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 ________________________________________________________________________________ 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 sending a message to: observations@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 We look forward to including your observations in future editions of AAVSO NEWS FLASH! ______________________________________________________________________________