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: 0006-12 WW CET 0855+18 SY CNC No. 634 0106+34 FN AND 0945+12 X LEO June 12, 2000 0206+57A TZ PER 1344+08 CR BOO 0207-63 WX HYI 1640+25 AH HER 0217+70 AM CAS 1911-00 FO AQL 0409-71 VW HYI 1925+42 V1504 CYG 0803+62 SU UMA 1953+77 AB DRA 0814+73 Z CAM ---------------------------------------------------------------------------- 0006-12 WW CETI The dwarf nova type (possible Z CAM subclass) cataclysmic variable WW CET appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 10.8903 13.9 PEX JUN 11.8951 10.6 PEX ---------------------------------------------------------------------------- 0106+34 FN ANDROMEDAE The dwarf nova type cataclysmic variable FN AND appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 10.4368 <14.7 HSG JUN 11.4007 13.5 HSG ---------------------------------------------------------------------------- 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 JUN 09.4438 14.5 HSG JUN 10.4410 13.1 HSG JUN 09.4444 13.5 HSG JUN 11.4049 13.0 HSG JUN 10.0056 13.3 DPV ---------------------------------------------------------------------------- 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 JUN 08.8444 14.2 PEX JUN 11.8889 12.8 PEX ---------------------------------------------------------------------------- 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 JUN 09.4347 14.6 HSG JUN 10.897 13.1 RMQ JUN 09.955 13.5 RMQ JUN 11.0174 13.5 DPV JUN 09.9792 13.5 DPV JUN 11.3972 13.3 HSG JUN 10.4340 13.3 HSG JUN 11.9826 <13.5 DPV ---------------------------------------------------------------------------- 0409-71 VW HYDRI The dwarf nova type (SU UMA subclass) cataclysmic variable VW HYI is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 06.4514 13.6 PEX JUN 11.4535 10.6 PEX JUN 11.362 10.4 SRX ---------------------------------------------------------------------------- 0803+62 SU URSAE MAJORIS The dwarf nova type (SU UMA subclass prototype) cataclysmic variable SU UMA is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 09.1792 14.2 HSG JUN 10.8924 11.9 DPV JUN 09.292 <12.7 LMK JUN 10.898 12.4 RMQ JUN 09.884 13.9 RMQ JUN 11.1486 12.4: SXN JUN 10.1604 12.6 SXN JUN 11.1875 12.4 HSG JUN 10.1806 12.3 HSG JUN 11.9028 <12.4 DPV ---------------------------------------------------------------------------- 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 JUN 11.4056 12.0 HSG JUN 12.313 10.8 LMK JUN 11.9063 11.7 DPV ---------------------------------------------------------------------------- 0855+18 SY CANCRI The dwarf nova type (Z CAM subclass) cataclysmic variable SY CNC is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 07.2097 13.3 HSG JUN 10.1681 12.2 HSG JUN 09.1729 12.8 HSG JUN 11.1764 11.9 HSG ---------------------------------------------------------------------------- 0945+12 X LEONIS The dwarf nova type cataclysmic variable X LEO is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 10.1688 <14.3 HSG JUN 11.361 12.5 SRX JUN 11.1729 13.1 HSG JUN 11.4388 12.6 PEX JUN 11.2194 12.9 HSG ---------------------------------------------------------------------------- 1344+08 CR BOOTIS The variable star CR BOO appears to be brightening, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 10.1903 15.0: HSG JUN 10.941 <13.8 MGH JUN 10.2222 <13.8 SXN JUN 11.2007 14.3 HSG ---------------------------------------------------------------------------- 1640+25 AH HERCULIS The dwarf nova type (Z CAM subclass) cataclysmic variable AH HER is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 07.1778 13.5 SXN JUN 09.4577 12.2 BTH JUN 07.2361 13.2 HSG JUN 09.902 11.9 RMQ JUN 07.385 12.9: LMK JUN 09.9688 12.1 DPV JUN 07.89 12.2 VET JUN 10.1965 12.0 HSG JUN 07.915 13.2 OJR JUN 10.2361 11.6 SXN JUN 07.994 12.5 RMQ JUN 10.2375 11.7 BTH JUN 08.1035 12.7 BRJ JUN 10.900 12.0 RMQ JUN 08.89 12.0 VET JUN 10.9250 11.8 DPV JUN 08.906 12.4 RMQ JUN 11.1583 11.6 SXN JUN 08.9688 12.6 DPV JUN 11.1667 11.5 HDU JUN 09.01 12.1 SCZ JUN 11.2063 11.8 HSG JUN 09.1986 12.1 HSG JUN 11.2960 12.06 CCDV ZRE JUN 09.2083 12.0 SXN JUN 11.9097 11.9 DPV JUN 09.326 11.9: LMK JUN 12.378 11.7 LMK ---------------------------------------------------------------------------- 1911-00 FO AQUILAE The dwarf nova type (SS CYG subclass) cataclysmic variable FO AQL is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 10.4222 <15.4 HSG JUN 11.3819 13.6 HSG JUN 10.8333 <15.0 PEX JUN 11.522 13.6 SRX JUN 10.9861 <13.8 DPV JUN 11.8403 13.8 PEX ---------------------------------------------------------------------------- 1925+42 V1504 CYGNI The dwarf nova type (SU UMA subclass) cataclysmic variable V1504 CYG appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 08.9972 <15.4 DPV JUN 10.9563 14.5 DPV JUN 09.964 <15.1 RMQ ---------------------------------------------------------------------------- 1953+77 AB DRACONIS The dwarf nova type (Z CAM subclass) cataclysmic variable AB DRA appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 10.9444 14.6 JCN JUN 12.2208 12.8 HSG JUN 11.1826 12.8 HSG ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: BRJ - J. BORTLE, USA OJR - J. OSORIO, SPAIN BTH - T. BURROWS, USA PEX - A. PEARCE, AUSTRALIA DPV - P. DUBOVSKY, SLOVAKIA RMQ - M. RESZELSKI, POLAND HDU - D. HURDIS, USA SCZ - E. SCHWEITZER, FRANCE HSG - G. HANSON II, USA SRX - R. STUBBINGS, AUSTRALIA JCN - C. JONES, ENGLAND SXN - M. SIMONSEN, USA LMK - M. LINNOLT, USA VET - M. VERDENET, FRANCE MGH - H. MCGEE, ENGLAND 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! ____________________________________________________________________________