THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS 25 Birch Street, Cambridge, MA 02138 USA Tel. 617-354-0484 Fax 617-354-0665 INTERNET: aavso@aavso.org * * * AAVSO NEWS FLASH * * * Subject: AM Cas, V516 Cyg, WX Hyi, ER UMa No. 268 March 9, 1998 ________________________________________________________________________________ AM CASSIOPEIAE The dwarf nova type (Z Cam subclass) cataclysmic variable AM Cas appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAR 01.1278 15.4: HSG MAR 03.4917 14.7 HSG MAR 03.1208 15.0: HSG MAR 08.5243 13.5 HSG ----------------------------------------------------------------------------- V516 CYGNI The dwarf nova type (SS Cyg subclass) cataclysmic variable V516 Cyg appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAR 01.4910 <15.5 HSG MAR 05.5299 <14.2 HSG MAR 03.5042 <14.2 HSG MAR 08.5069 13.9 HSG MAR 04.4674 <14.2 HSG ----------------------------------------------------------------------------- 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 MAR 07.4417 <13.7 SRX MAR 08.7576 12.5 SRX MAR 08.4528 13.7 SRX MAR 09.4542 11.4 SRX MAR 08.4944 13.7 SRX MAR 09.4917 11.4 SRX MAR 08.5514 13.6 SRX ----------------------------------------------------------------------------- ER URSAE MAJORIS The dwarf nova type (SU UMa subclass) cataclysmic variable ER UMa appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 28.2785 15.2: HSG MAR 04.4410 13.2 HSG MAR 01.1535 14.2 HSG MAR 08.4549 13.3 HSG MAR 03.1410 13.3 HSG ----------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: HSG - G. Hanson, USA 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! Rebecca Pellock, Technical Assistant on behalf of Janet A. Mattei, Director ________________________________________________________________________________ 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 sending a message to: observations@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 We look forward to including your observations in future editions of AAVSO NEWS FLASH! _______________________________________________________________________________