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: 0523-03 V1159 ORI 1640+25 AH HER No. 395 0804+28 YZ CNC 1848+26 CY LYR February 11, 1999 1051+50 CY UMA ---------------------------------------------------------------------------- 0523-03 V1159 ORIONIS The dwarf nova type (SU UMA subclass) cataclysmic variable V1159 ORI is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 09.852 <15.0 PYG FEB 10.831 13.4 PYG FEB 10.0980 15.14 CCDV ZRE FEB 11.0347 13.3 TSC FEB 10.783 14.0 MUY ---------------------------------------------------------------------------- 0804+28 YZ CANCRI The dwarf nova type (SU UMA subclass) cataclysmic variable YZ CNC is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 10.0840 14.2 BRJ FEB 11.0410 11.6 BRJ FEB 10.1470 14.10 CCDV ZRE FEB 11.0486 11.8 TSC FEB 10.5014 13.3 SRX FEB 11.060 12.0 CGF FEB 10.799 12.1 MUY FEB 11.1382 11.9 MKJ FEB 10.887 11.6 PYG FEB 11.2660 11.92 CCDV ZRE FEB 11.0188 11.4 DPL FEB 11.3236 11.8 RR ---------------------------------------------------------------------------- 1051+50 CY URSAE MAJORIS The dwarf nova type (SU UMA subclass) cataclysmic variable CY UMA is in superoutburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 09.937 <14.8 PYG FEB 11.217 12.6 MUY FEB 10.01 <13.9 SPK FEB 11.3100 12.60 CCDV ZRE FEB 10.840 12.5 MUY FEB 11.809 12.2 SPK FEB 11.076 12.3 SPK ---------------------------------------------------------------------------- 1640+25 AH HERCULIS The dwarf nova type (Z CAM subclass) cataclysmic variable AH HER is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 06.233 14.1 MUY FEB 11.228 11.8 MUY FEB 09.3540 12.90 CCDV ZRE ---------------------------------------------------------------------------- 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 FEB 06.237 <14.0 MUY FEB 11.235 13.1 MUY ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: BRJ - J. BORTLE, USA RR - R. ROYER, USA CGF - G. CHAPLE JR., USA SPK - P. SCHMEER, GERMANY DPL - P. DOMBROWSKI, USA SRX - R. STUBBINGS, AUSTRALIA MKJ - J. MCKENNA, USA TSC - S. TRACY, USA MUY - E. MUYLLAERT, BELGIUM ZRE - R. ZISSELL, USA PYG - G. POYNER, ENGLAND 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! ____________________________________________________________________________