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: 0611+15 CZ ORI 0939+52 ER UMA No. 1115 0803+62 SU UMA 0945+12 X LEO February 24, 2003 0804+28 YZ CNC 1518-75 AG APS 0854-24 VZ PYX 1521+08 QW SER ---------------------------------------------------------------------------- 0611+15 CZ ORIONIS The dwarf nova type cataclysmic variable CZ ORI appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 22.8688 15.42 CCD DRG FEB 23.7806 <12.7 GCO FEB 23.0743 15.5 CCDV WJD FEB 24.0806 15.2 TDB FEB 23.4660 <14.4 SRX FEB 24.0854 14.8 SXN ---------------------------------------------------------------------------- 0803+62 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 22.8720 14.9 PYG FEB 24.7951 11.9 GUN FEB 23.3681 15.3 LMK FEB 24.8350 12.0 SPK FEB 23.7972 14.2 VJA ---------------------------------------------------------------------------- 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 20.2625 14.4 SXN FEB 22.8194 12.5 GCO FEB 20.3132 14.0 LMK FEB 22.8793 12.74 CCD DRG FEB 20.8243 <14.2 OJR FEB 22.8868 11.8 OCR FEB 20.8299 14.0 HHU FEB 22.8980 12.2 PYG FEB 20.9041 <12.8 OCR FEB 23.2882 12.3 LMK FEB 21.0000 14.2: CGF FEB 23.4710 12.1 SRX FEB 21.7785 <14.0 GUN FEB 23.7923 12.4 OCR FEB 22.8139 12.0 GUN FEB 23.8875 12.5 GCO ---------------------------------------------------------------------------- 0854-24 VZ PYXIDIS The dwarf nova type (SU UMA subclass) cataclysmic variable VZ PYX appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 19.4310 <14.4 SRX FEB 23.4450 12.2 SRX ---------------------------------------------------------------------------- 0939+52 ER URSAE MAJORIS The dwarf nova type (SU UMA subclass) cataclysmic variable ER UMA appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 22.8729 <14.5 VJA FEB 23.8014 13.7 VJA FEB 22.8760 14.8 PYG FEB 23.8208 13.7 VJA FEB 23.1375 <12.9 SUI ---------------------------------------------------------------------------- 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 FEB 23.0819 15.7 CCDV WJD FEB 23.8805 <12.4 OCR FEB 23.3465 15.1 LMK FEB 23.9111 13.3 GCO FEB 23.4940 <14.1 SRX FEB 24.7986 12.2 GUN FEB 23.7931 <13.5 VJA ---------------------------------------------------------------------------- 1518-75 AG APODIS The dwarf nova type cataclysmic variable AG APS appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 19.4490 <15.0 SRX FEB 23.5210 15.0 SRX ---------------------------------------------------------------------------- 1521+08 QW SERPENTIS The dwarf nova type (SU UMA subclass) cataclysmic variable QW SER is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 13.6910 <14.6 SRX FEB 23.2153 12.6 MUY FEB 21.2000 12.5: SPK FEB 24.0820 12.8 SPK FEB 23.2000 12.5: SPK ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: CGF - G. CHAPLE JR., USA PYG - G. POYNER, ENGLAND DRG - R. DIETHELM, SWITZERLAND SPK - P. SCHMEER, GERMANY GCO - C. GUALDONI, ITALY SRX - R. STUBBINGS, AUSTRALIA GUN - J. GUNTHER, FRANCE SUI - R. SMITH, ENGLAND HHU - H. HAUTECLER, BELGIUM SXN - M. SIMONSEN, USA LMK - M. LINNOLT, USA TDB - D. TAYLOR, CANADA MUY - E. MUYLLAERT, BELGIUM VJA - J. VIRTANEN, FINLAND OCR - C. OTTEN, BELGIUM WJD - J. WEST, USA OJR - J. OSORIO, SPAIN 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! ____________________________________________________________________________