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: 0109+37 FO AND 0905+51 DI UMA No. 584 0409-71 VW HYI 1529-40 BR LUP March 1, 2000 0749+22 U GEM 1552+72 SS UMI 0750-24 BX PUP 1804+67 EX DRA ---------------------------------------------------------------------------- 0109+37 FO ANDROMEDAE The dwarf nova type (SU UMA subclass) cataclysmic variable FO AND appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 22.0780 17.32 CCDV ZRE FEB 29.1063 <15.4 HSG FEB 25.1160 <15.4 HSG FEB 29.9780 15.63 CCDV ZRE FEB 25.797 <15.3 PYG ---------------------------------------------------------------------------- 0409-71 VW HYDRI The dwarf nova type (SU UMA subclass) cataclysmic variable VW HYI is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 28.750 13.9 MLF FEB 29.767 12.5 SJX FEB 29.4847 13.4 SRX FEB 29.791 12.7 OB FEB 29.5201 13.1 NLX FEB 29.803 12.6 MLF FEB 29.5333 13.3 SRX MAR 01.05 12.6 GAJ FEB 29.6097 13.2 SRX MAR 01.4278 9.3 SRX FEB 29.750 12.7 MLF ---------------------------------------------------------------------------- 0749+22 U GEMINORUM The dwarf nova type (SS CYG subclass) cataclysmic variable U GEM is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 29.1819 14.5 HSG MAR 01.1611 13.5 MKJ FEB 29.1875 14.2 SXN MAR 01.4472 13.4 SRX FEB 29.4500 14.0 SRX MAR 01.4708 13.4 SRX FEB 29.4917 14.1 NLX MAR 01.4986 13.3 SRX FEB 29.967 14.1 PYG MAR 01.5569 13.3 SRX MAR 01.0257 13.6 DPL MAR 01.764 12.2 SPK MAR 01.0403 13.8 BRJ MAR 01.810 12.1 SPK MAR 01.0736 13.7 BRJ ---------------------------------------------------------------------------- 0750-24 BX PUPPIS The dwarf nova type (Z CAM subclass) cataclysmic variable BX PUP is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 26.5965 <15.0 PEX FEB 29.4632 14.2 SRX FEB 27.4861 <14.8 SRX FEB 29.5000 14.2 NLX FEB 28.5764 14.4 PEX MAR 01.4597 14.2 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 FEB 29.1903 <15.5 HSG MAR 29.988 14.7 PYG ---------------------------------------------------------------------------- 1529-40 BR LUPI The dwarf nova type (SU UMA subclass) cataclysmic variable BR LUP appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 07.7090 <14.8 SRX MAR 01.5653 14.0 SRX FEB 29.6125 <14.6 SRX MAR 01.5722 14.0 SRX ---------------------------------------------------------------------------- 1552+72 SS URSAE MINORIS The dwarf nova type (SU UMA subclass) cataclysmic variable SS UMI appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 27.4965 <15.8 HSG MAR 01.066 14.3 PYG FEB 29.1028 <14.2 HSG ---------------------------------------------------------------------------- 1804+67 EX DRACONIS The eclipsing dwarf nova type cataclysmic variable EX DRA is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 22.3403 16.7: CCDV ZRE MAR 01.0493 13.2 BRJ FEB 26.063 15.4 PYG MAR 01.069 13.0 PYG FEB 26.5160 <14.8 HSG MAR 01.3785 13.5 CCDV ZRE FEB 27.5035 15.0 HSG ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: BRJ - J. BORTLE, USA PEX - A. PEARCE, AUSTRALIA DPL - P. DOMBROWSKI, USA PYG - G. POYNER, ENGLAND GAJ - J. GARCIA, ARGENTINA SJX - J. SMIT, SOUTH AFRICA HSG - G. HANSON II, USA SPK - P. SCHMEER, GERMANY MKJ - J. MCKENNA, USA SRX - R. STUBBINGS, AUSTRALIA MLF - L. MONARD, SOUTH AFRICA SXN - M. SIMONSEN, USA NLX - P. NELSON, AUSTRALIA ZRE - R. ZISSELL, USA OB - M. OVERBEEK, SOUTH AFRICA 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! ____________________________________________________________________________