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: 0809-76 Z CHA 1815-83 NSV 10934 No. 1116 1120-35 V442 CEN 1953+77 AB DRA February 25, 2003 1140-03 TW VIR ---------------------------------------------------------------------------- 0809-76 Z CHAMAELONIS The dwarf nova type (SU UMA subclass) cataclysmic variable Z CHA appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 23.5020 <14.8 SRX FEB 25.5340 12.3 SRX FEB 25.4900 12.3 SRX ---------------------------------------------------------------------------- 1120-35 V442 CENTAURI The dwarf nova type (SS CYG subclass) cataclysmic variable V442 CEN is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 23.5070 <14.4 SRX FEB 25.5070 14.0 SRX FEB 25.4458 14.5 LMK FEB 25.5430 14.0 SRX ---------------------------------------------------------------------------- 1140-03 TW VIRGINIS The dwarf nova type cataclysmic variable TW VIR appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 23.1341 15.57 CCD DRG FEB 25.5110 13.7 SRX FEB 23.5110 <14.6 SRX FEB 25.5570 13.7 SRX FEB 25.0799 14.2 HHU ---------------------------------------------------------------------------- 1815-83 NSV 10934 The dwarf nova type cataclysmic variable NSV 10934 appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 23.4610 <14.8 SRX FEB 25.5330 12.7 SRX FEB 25.4810 12.7 SRX ---------------------------------------------------------------------------- 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 FEB 23.1875 14.30 CCD DRG FEB 24.7812 13.0 OCR FEB 23.2542 14.3 LMK FEB 25.4368 12.7 CGF FEB 23.8861 12.9 OCR FEB 25.7881 12.9 OCR ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: CGF - G. CHAPLE JR., USA LMK - M. LINNOLT, USA DRG - R. DIETHELM, SWITZERLAND OCR - C. OTTEN, BELGIUM HHU - H. HAUTECLER, BELGIUM 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, 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! ____________________________________________________________________________