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: 0130+31 TW TRI 0814+73 Z CAM No. 517 0206+57A TZ PER 0830+21 CC CNC October 25, 1999 0524-03 V1159 ORI 1937+21 FY VUL 0641+28 IR GEM 1953+77 AB DRA ---------------------------------------------------------------------------- 0130+31 TW TRIANGULI The dwarf nova type (Z CAM subclass) cataclysmic variable TW TRI appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials OCT 21.280 16.2 CCDV OCN OCT 25.275 14.1 CCDV OCN ---------------------------------------------------------------------------- 0206+57A TZ PERSEI The dwarf nova type (Z CAM subclass) cataclysmic variable TZ PER is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials OCT 21.2708 <14.1 SXN OCT 25.408 13.4 CCDV OCN OCT 24.804 13.7: MUY ---------------------------------------------------------------------------- 0524-03 V1159 ORIONIS The dwarf nova type (SU UMA subclass) cataclysmic variable V1159 ORI is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials OCT 19.325 14.5 CCDV OCN OCT 24.3180 15.34 CCDV ZRE OCT 22.2930 13.88 CCDV ZRE OCT 25.355 13.8 CCDV OCN OCT 22.7556 13.9 SRX ---------------------------------------------------------------------------- 0641+28 IR GEMINORUM The dwarf nova type (SU UMA subclass) cataclysmic variable IR GEM appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials OCT 24.3290 16.04 CCDV ZRE OCT 25.328 12.3 MRV ---------------------------------------------------------------------------- 0814+73 Z CAMELOPARDALIS The dwarf nova type (Z CAM subclass prototype) cataclysmic variable Z CAM is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials OCT 14.070 13.4 PYG OCT 19.196 12.6 MUY OCT 15.449 12.4 MRV OCT 19.8000 12.4 VFK OCT 15.9840 12.5 BRJ OCT 20.8000 11.6 VFK OCT 16.180 12.4 MUY OCT 21.4200 11.0 DGP OCT 17.093 12.3 MUY OCT 21.9778 10.9 BRJ OCT 17.9986 12.8 POX OCT 21.9938 10.5 CGF OCT 18.053 12.6 PYG OCT 25.0214 11.2 BEB OCT 19.002 12.9 CGF OCT 25.342 11.0 MRV ---------------------------------------------------------------------------- 0830+21 CC CANCRI The dwarf nova type cataclysmic variable CC CNC appears to be in outburst, as indicated by the following observation: AAVSO Observer UT Mag. Initials OCT 23.12 14.2 KTO According to the AAVSO International Database this star is fainter than visual magnitude 15.5 during quiescence. ---------------------------------------------------------------------------- 1937+21 FY VULPECULAE The dwarf nova type (Z CAM subclass) cataclysmic variable FY VUL appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials OCT 19.849 14.4 PYG OCT 24.778 13.8 MUY ---------------------------------------------------------------------------- 1953+77 AB DRACONIS The dwarf nova type (Z CAM subclass) cataclysmic variable AB DRA is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials OCT 19.796 14.4 PYG OCT 24.758 12.8 MUY OCT 23.790 12.8 MUY OCT 25.0152 12.7 BEB ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: BEB - R. BERG, USA OCN - S. O'CONNOR, CANADA BRJ - J. BORTLE, USA POX - M. POXON, ENGLAND CGF - G. CHAPLE JR., USA PYG - G. POYNER, ENGLAND DGP - G. DYCK, USA SRX - R. STUBBINGS, AUSTRALIA KTO - T. KINNUNEN, FINLAND SXN - M. SIMONSEN, USA MRV - R. MODIC, USA VFK - F. VOHLA, GERMANY 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! ____________________________________________________________________________