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: 0109+37 FO AND 0854-24 VZ PYX No. 506 0130+31 TW TRI 1621+39 V844 HER October 4, 1999 0207-63 WX HYI 0217+70 AM CAS ---------------------------------------------------------------------------- 0109+37 FO ANDROMEDAE The dwarf nova type (SU UMA subclass) cataclysmic variable FO AND appears to be undergoing an outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials OCT 01.2330 18.03 CCDV ZRE OCT 03.040 15.2 PYG OCT 02.2120 17.98 CCDV ZRE OCT 03.1840 14.6 HSG OCT 02.377 16.6 CCDV OCN OCT 04.1903 15.6: HSG ---------------------------------------------------------------------------- 0130+31 TW TRIANGULI The dwarf nova type (Z CAM subclass) cataclysmic variable TW TRI is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials SEP 26.308 16.4 CCDV OCN OCT 02.881 13.8 MUY OCT 02.306 13.8 OCN ---------------------------------------------------------------------------- 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 SEP 28.3903 <14.0 SRX OCT 03.990 12.7 MLF ---------------------------------------------------------------------------- 0217+70 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 OCT 03.1806 15.0 HSG OCT 04.1868 12.9 HSG ---------------------------------------------------------------------------- 0854-24 VZ PYXIDIS The dwarf nova type (SU UMA subclass) cataclysmic variable VZ PYX appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials SEP 20.7451 <14.0 SRX OCT 04.056 12.5 MLF SEP 28.7597 <13.0 SRX ---------------------------------------------------------------------------- 1621+29 V844 HERCULIS The dwarf nova type cataclysmic variable V844 HER is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials OCT 03.1118 13.8 HSG OCT 04.1104 14.0 HSG ---------------------------------------------------------------------------- 1621+39 V844 HERCULIS The dwarf nova type cataclysmic variable V844 HER is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials SEP 23.826 <15.0 PYG OCT 02.070 12.5 MRV SEP 26.801 <14.1 MUY OCT 02.785 12.6 MUY SEP 29.824 12.3 MGH OCT 02.823 12.4 MGH OCT 01.068 12.4 MRV OCT 02.918 12.5 PYG OCT 01.781 12.6 SPK ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: HSG - G. HANSON II, USA OCN - S. O'CONNOR, CANADA MGH - H. MCGEE, ENGLAND PYG - G. POYNER, ENGLAND MLF - L. MONARD, SOUTH AFRICA SPK - P. SCHMEER, GERMANY MRV - R. MODIC, USA SRX - R. STUBBINGS, AUSTRALIA MUY - E. MUYLLAERT, BELGIUM ZRE - R. ZISSELL, USA 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! ____________________________________________________________________________