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 0809-76 Z CHA No. 514 0217+70 AM CAS 1608-28 V893 SCO October 18, 1999 0401+50 FO PER 1841+37 AY LYR ---------------------------------------------------------------------------- 0207-63 WX HYDRI The dwarf nova type (SU UMA subclass) cataclysmic variable WX HYI appears to be undergoing an outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials OCT 14.4104 14.4 SRX OCT 16.4312 12.2 SRX OCT 15.6160 13.2 SRX OCT 18.4361 13.7 SRX ---------------------------------------------------------------------------- 0217+70 AM CASSIOPEIAE The dwarf nova type (Z CAM subclass) cataclysmic variable AM CAS is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials OCT 12.8396 14.9 POX OCT 16.0097 13.4 BRJ OCT 12.885 <14.1 MUY OCT 17.060 13.6 MUY OCT 13.8472 <14.2 DPV OCT 17.858 13.7 MUY OCT 13.895 <14.1 MUY OCT 17.9583 14.0 DPV OCT 14.9900 13.4 DGP OCT 17.9792 13.4 POX OCT 15.846 12.8 MUY OCT 18.1653 13.7 HSG ---------------------------------------------------------------------------- 0401+50 FO PERSEI The dwarf nova type cataclysmic variable FO PER appears to be going into outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials OCT 16.2280 17.51 CCDV ZRE OCT 17.1820 15.81 CCDV ZRE OCT 17.070 <14.2 MUY ---------------------------------------------------------------------------- 0809-76 Z CHAMAELEONTIS The dwarf nova type (SU UMA subclass) cataclysmic variable Z CHA appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials SEP 11.6306 15.0 SRX OCT 18.4208 12.6 SRX OCT 16.4625 <13.8 SRX OCT 18.4368 12.6 SRX ---------------------------------------------------------------------------- 1608-28 V893 SCORPII The dwarf nova type cataclysmic variable V893 SCO appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials OCT 12.4146 14.1 SRX OCT 16.4382 <13.0 SRX OCT 14.4132 <13.5 SRX OCT 18.4167 12.9 SRX ---------------------------------------------------------------------------- 1841+37 AY LYRAE The dwarf nova type (SU UMA subclass) cataclysmic variable AY LYR is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials OCT 16.8007 <15.0 JCN OCT 17.804 13.8 MUY OCT 17.788 13.4 MGH OCT 17.814 13.5 PYG OCT 17.7958 13.3 JCN OCT 18.1083 13.5 HSG ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: BRJ - J. BORTLE, USA MUY - E. MUYLLAERT, BELGIUM DGP - G. DYCK, USA POX - M. POXON, ENGLAND DPV - P. DUBOVSKY, SLOVAKIA PYG - G. POYNER, ENGLAND HSG - G. HANSON II, USA SRX - R. STUBBINGS, AUSTRALIA JCN - C. JONES, ENGLAND ZRE - R. ZISSELL, USA MGH - H. MCGEE, ENGLAND 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! ____________________________________________________________________________