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: AB Dra, CU Vel No. 258 February 10, 1998 ________________________________________________________________________________ AB DRACONIS The dwarf nova type (Z Cam subclass) cataclysmic variable AB Dra appears to be in outburst, as indicated by the following observations: AAVSO Observer UT Mag. Initials FEB 07.817 14.0 PYG FEB 09.063 13.4 CGF FEB 10.008 12.7 CGF ----------------------------------------------------------------------------- CU VELORUM The dwarf nova type (SU UMa subclass) cataclysmic variable CU Vel is in outburst, as indicated by the following observations: AAVSO Observer UT Mag. Initials FEB 08.75 <12.9 OB FEB 09.5090 <13.5 SRX FEB 09.861 11.9 OB FEB 10.6236 10.9 SRX According to the AAVSO International Database this star was last in outburst in June 1997. ----------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: CGF - G. Chaple, USA OB - D. Overbeek, South Africa PYG - G. Poyner, England 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! ______________________________________________________________________________