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: 0409-71 VW HYI 0905+51 DI UMA No. 403 0547-05 CN ORI 0945-23 AG HYA March 8, 1999 0641+28 IR GEM 1129-11 TT CRT 0725+06 SV CMI 1640+25 AH HER 0750-24 BX PUP 1953+77 AB DRA 0804+28 YZ CNC ---------------------------------------------------------------------------- 0409-71 VW HYDRI The dwarf nova type (SU UMA subclass) cataclysmic variable VW HYI appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAR 03.73 13.9 MLF MAR 07.757 11.4 OB MAR 04.4278 13.7 SRX MAR 07.774 10.5 MLF MAR 04.770 <12.9 OB MAR 08.4444 11.4 SRX MAR 07.4250 10.3 SRX ---------------------------------------------------------------------------- 0547-05 CN ORIONIS The dwarf nova type (Z CAM subclass) cataclysmic variable CN ORI is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAR 03.893 <14.3 PYG MAR 07.4444 13.0 SRX MAR 06.1063 13.1 HSG MAR 08.0577 13.0 BEB MAR 07.1007 13.1 HSG MAR 08.4319 12.7 SRX ---------------------------------------------------------------------------- 0641+28 IR GEMINORUM The dwarf nova type (SU UMA subclass) cataclysmic variable IR GEM is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAR 07.1292 <16.0 HSG MAR 08.1630 13.78 CCDV ZRE MAR 07.4528 <14.0 SRX MAR 08.4333 12.7 SRX ---------------------------------------------------------------------------- 0725+06 SV CANIS MINORIS The dwarf nova type (Z CAM subclass) cataclysmic variable SV CMI appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 28.054 <15.7 OCN MAR 07.4535 13.4 SRX MAR 03.836 <13.8 MUY MAR 08.4347 13.6 SRX MAR 04.4306 <14.3 SRX ---------------------------------------------------------------------------- 0750-24 BX PUPPIS The dwarf nova type (Z CAM subclass) cataclysmic variable BX PUP appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 20.4903 <15.0 SRX MAR 07.4479 14.4 SRX FEB 25.4750 14.4 SRX MAR 08.4521 14.3 SRX ---------------------------------------------------------------------------- 0804+28 YZ CANCRI The dwarf nova type (SU UMA subclass) cataclysmic variable YZ CNC appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAR 07.1313 15.3: HSG MAR 08.1720 14.32 CCDV ZRE MAR 07.4549 <14.2 SRX MAR 08.4458 12.4 SRX MAR 08.1163 <13.3 BEB ---------------------------------------------------------------------------- 0905+51 DI URSAE MAJORIS The dwarf nova type (UG subclass) cataclysmic variable DI UMA may be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 21.2826 <15.5 HSG MAR 03.948 <14.2 PYG FEB 22.934 <15.3 PYG MAR 06.1583 14.8 HSG ---------------------------------------------------------------------------- 0945-23 AG HYDRAE The dwarf nova type (UG subclass) cataclysmic variable AG HYA appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 20.4958 <15.0 SRX MAR 07.4410 14.2 SRX FEB 26.7424 <14.8 SRX MAR 08.4611 14.2 SRX ---------------------------------------------------------------------------- 1129-11 TT CRATERIS The dwarf nova type (UG subclass) cataclysmic variable TT CRT is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAR 04.817 <14.0 PEX MAR 08.040 13.0 OB MAR 06.778 13.1 PEX MAR 08.169 13.0 OB MAR 07.4646 13.2 SRX MAR 08.4694 13.3 SRX MAR 07.954 12.7 OB ---------------------------------------------------------------------------- 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 27.3460 14.54 CCDV ZRE MAR 03.3040 12.96 CCDV ZRE FEB 28.177 13.9 MUY MAR 08.3090 12.20 CCDV ZRE FEB 28.2930 14.58 CCDV ZRE ---------------------------------------------------------------------------- 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 03.3960 14.7 CCDV ZRE MAR 08.3830 12.9 CCDV ZRE MAR 07.1104 12.6 HSG ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: BEB - R. BERG, USA OCN - S. O'CONNOR, CANADA HSG - G. HANSON II, USA PEX - A. PEARCE, AUSTRALIA MLF - L. MONARD, SOUTH AFRICA PYG - G. POYNER, ENGLAND MUY - E. MUYLLAERT, BELGIUM SRX - R. STUBBINGS, AUSTRALIA OB - M. OVERBEEK, SOUTH AFRICA ZRE - R. ZISSELL, USA 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 Kerriann Malatesta, 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! ____________________________________________________________________________