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: 0006-12 WW CET No. 440 0804+28 YZ CNC May 20, 1999 ---------------------------------------------------------------------------- 0006-12 WW CETI The dwarf nova type (possible Z CAM subclass) cataclysmic variable WW CET appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 18.7854 13.6 SRX MAY 19.8083 11.9 SRX ---------------------------------------------------------------------------- 0804+28 YZ CANCRI The dwarf nova type (SU UMA subclass) cataclysmic variable YZ CNC is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 15.0880 15.26 CCDV ZRE MAY 18.857 11.4 DPV MAY 15.3660 <13.5 SRX MAY 18.857 11.4 DPV MAY 17.0910 <14.5 BRJ MAY 19.1217 11.9 BEB MAY 18.0785 11.7 DPL MAY 19.3764 12.0 SRX MAY 18.0889 11.8 BRJ MAY 19.843 11.7 DPV MAY 18.0960 12.17 CCDV ZRE MAY 19.885 12.0 OJR ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: BEB - R. BERG, USA OJR - J. OSORIO, SPAIN BRJ - J. BORTLE, USA SRX - R. STUBBINGS, AUSTRALIA DPL - P. DOMBROWSKI, USA ZRE - R. ZISSELL, USA DPV - P. DUBOVSKY, SLOVAKIA 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! ____________________________________________________________________________