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: 0725-19 CL PUP 1307-60 NN CEN No. 1131 0744-23 BV PUP 1424-25 GY HYA March 25, 2003 0905+51 DI UMA 1815-83 NSV 10934 1102-55 V342 CEN 1953+77 AB DRA ---------------------------------------------------------------------------- 0725-19 CL PUPPIS The variable CL PUP may be brightening, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAR 06.4770 <14.6 SRX MAR 23.4020 14.8 SRX MAR 12.4390 <13.8 SRX MAR 24.4410 14.7 SRX MAR 22.4100 14.7 SRX MAR 25.4270 14.8 SRX ---------------------------------------------------------------------------- 0744-23 BV PUPPIS The dwarf nova type (SS CYG subclass) cataclysmic variable BV PUP is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAR 15.3118 <14.5 LMK MAR 23.4010 14.4 SRX MAR 18.3556 <14.1 LMK MAR 24.4400 14.0 SRX MAR 20.3056 14.6 LMK MAR 25.3438 13.6 LMK MAR 21.3264 14.2 LMK MAR 25.4260 13.8 SRX MAR 22.4080 14.8 SRX ---------------------------------------------------------------------------- 0905+51 DI URSAE MAJORIS The dwarf nova type cataclysmic variable DI UMA appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAR 22.0341 <19.0 CCD DRG MAR 24.1986 <15.5 SXN MAR 22.8530 <15.3 PYG MAR 24.8270 15.1 PYG ---------------------------------------------------------------------------- 1102-55 V342 CENTAURI The dwarf nova type cataclysmic variable V342 CEN appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAR 24.4050 <15.0 SRX MAR 25.4960 14.8 SRX MAR 25.4460 14.8 SRX ---------------------------------------------------------------------------- 1307-60 NN CENTAURI The dwarf nova type (SS CYG subclass) cataclysmic variable NN CEN appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAR 24.4760 <14.4 SRX MAR 25.4680 14.3 SRX MAR 25.4370 14.3 SRX ---------------------------------------------------------------------------- 1424-25 GY HYDRAE The dwarf nova type cataclysmic variable GY HYA appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAR 15.7480 <14.6 SRX MAR 25.4930 14.8 SRX MAR 24.4870 <14.5 SRX MAR 25.5040 14.8 SRX ---------------------------------------------------------------------------- 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 MAR 22.4190 <14.8 SRX MAR 24.4920 12.6 SRX MAR 23.4540 <14.4 SRX MAR 25.4490 14.0 SRX MAR 24.4650 12.6 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 MAR 22.9000 14.8 HHU MAR 24.8210 13.0 PYG MAR 22.9027 <13.1 OCR MAR 24.8278 12.6 VJA MAR 23.8958 <13.1 OCR MAR 25.0431 12.7 CGF MAR 24.1697 13.55 CCD DRG ---------------------------------------------------------------------------- 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 SRX - R. STUBBINGS, AUSTRALIA HHU - H. HAUTECLER, BELGIUM SXN - M. SIMONSEN, USA LMK - M. LINNOLT, USA VJA - J. VIRTANEN, FINLAND OCR - C. OTTEN, BELGIUM 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! ____________________________________________________________________________