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: 1616-17 U SCO 1133+03 T LEO No. 400 0401+50 FO PER 1953+77 AB DRA February 25, 1999 0640-16 HL CMA ---------------------------------------------------------------------------- 1616-17 U SCORPII The recurrent nova U SCO is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 23.98 <14.3 MLF FEB 25.5625 7.6 SQN FEB 25.194 9.5 SPK FEB 25.625 8.0 MMZ Please see AAVSO Alert Notice 255 (which will be issued and posted on our web page later today) for AAVSO charts and more information on this outburst. ---------------------------------------------------------------------------- 0401+50 FO PERSEI The dwarf nova type cataclysmic variable FO PER is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 21.2493 <14.2 HSG FEB 23.0257 13.5 BRJ FEB 22.941 <13.7 MGH FEB 24.795 13.7 MUY ---------------------------------------------------------------------------- 0640-16 HL CANIS MAJORIS The dwarf nova type cataclysmic variable HL CMA is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 21.2347 14.2: HSG FEB 24.839 12.2 MUY FEB 22.872 <14.1 PYG FEB 25.0354 12.0 BRJ ---------------------------------------------------------------------------- 1133+03 T LEONIS The dwarf nova type (SU UMA subclass) cataclysmic variable T LEO is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 22.983 <14.8 PYG FEB 24.903 11.7 MUY FEB 23.058 <14.0 MGH FEB 24.907 11.5 SPK FEB 23.381 15.2 OCN FEB 25.163 10.5 SPK ---------------------------------------------------------------------------- 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 22.858 13.9 PYG FEB 24.773 12.6 MUY FEB 23.0125 14.0 BRJ FEB 25.0125 12.7 BRJ ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: BRJ - J. BORTLE, USA MUY - E. MUYLLAERT, BELGIUM HSG - G. HANSON II, USA OCN - S. O'CONNOR, CANADA MGH - H. MCGEE, ENGLAND PYG - G. POYNER, ENGLAND MLF - L. MONARD, SOUTH AFRICA SPK - P. SCHMEER, GERMANY MMZ - M. MATTIAZZO, AUSTRALIA SQN - L. SHAW, 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 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! ____________________________________________________________________________