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: Z Cha No. 19 May 10, 1996 ________________________________________________________________________________ Z CHAMAELONIS The dwarf nova type (SU UMa subclass) cataclysmic variable Z Cha is in superoutburst as indicated by the following observations: UT Mag. AAVSO Observer MAY 9.7153 11.6 J. Smit, South Africa MAY 9.8125 11.6 J. Hers, South Africa MAY 10.701 11.8 Smit Dr. Frank Bateson, Director of VSS, RASNZ, reported the following observations (vsnet-alert 411) which show the beginning of this superoutburst: UT Mag. Observer MAY 8.4271 14.9 R. Stubbings, Australia MAY 8.5368 14.0 Stubbings MAY 8.5771 13.8 Stubbings MAY 9.2847 12.5 G. Herdman, New Zealand MAY 9.3819 11.5 W. Taylor, Australia MAY 9.8042 11.7 P. Nelson, Australia ----------------------------------------------------------------------------- Please monitor Z Cha closely and phone-in, fax, or e-mail your observations to the AAVSO. Good observing! Janet A. Mattei ________________________________________________________________________________ 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! ________________________________________________________________________________