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: 0207-63 WX HYI 1051+50 CY UMA No. 607 0804+28 YZ CNC 1058-21 TU CRT April 20, 2000 1037+58 IY UMA ---------------------------------------------------------------------------- 0207-63 WX HYDRI The dwarf nova type (SU UMA subclass) cataclysmic variable WX HYI appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 16.7701 <13.7 SRX APR 20.3687 13.0 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 APR 19.877 <13.6 OJR APR 20.3694 12.1 SRX ---------------------------------------------------------------------------- 1037+58 IY URSAE MAJORIS The dwarf nova type (SU UMA subclass) cataclysmic variable IY UMA appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 18.194 16.9 CCD SPK APR 20.175 14.1 CCD SPK ---------------------------------------------------------------------------- 1051+50 CY URSAE MAJORIS The dwarf nova type (SU UMA subclass) cataclysmic variable CY UMA appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 13.288 16.7 CCDV OCN APR 18.872 <14.1 MUY APR 17.865 <14.1 MUY APR 19.854 13.2 MUY ---------------------------------------------------------------------------- 1058-21 TU CRATERIS The dwarf nova type (SU UMA subclass) cataclysmic variable TU CRT appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 10.73 <14.5 MLF APR 20.3854 12.6 SRX APR 16.4556 <13.0 SRX ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: MLF - L. MONARD, SOUTH AFRICA OJR - J. OSORIO, SPAIN MUY - E. MUYLLAERT, BELGIUM SPK - P. SCHMEER, GERMANY OCN - S. O'CONNOR, CANADA SRX - R. STUBBINGS, AUSTRALIA 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! ____________________________________________________________________________