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 1428-39 V854 CEN No. 451 0139+37 AR AND 1911-00 FO AQL June 11, 1999 0206+57A TZ PER 1944+36A V811 CYG 0217+70 AM CAS 2043+41 V516 CYG ---------------------------------------------------------------------------- 0109+37 FO ANDROMEDAE The dwarf nova type (SU UMA subclass) cataclysmic variable FO AND appears to be in outburst, as indicated by the following observations: AAVSO Observer UT Mag. Initials JUN 11.9556 14.3 HSG ---------------------------------------------------------------------------- 0139+37 AR ANDROMEDAE The dwarf nova type cataclysmic variable AR AND appears to be in outburst, as indicated by the following observations: AAVSO Observer UT Mag. Initials JUN 11.9458 11.9 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 07.991 14.4 PYG JUN 10.047 13.2 MUY JUN 10.043 <13.8 PYG JUN 11.9486 13.0 HSG ---------------------------------------------------------------------------- 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 09.13 <14.2 BRJ JUN 11.1174 13.4 BRJ JUN 10.043 13.3 MUY JUN 11.9438 13.9 HSG ---------------------------------------------------------------------------- 1428-39 V854 CENTAURI The R CrB type variable V854 CEN is fading, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 01.475 7.6 WPX JUN 05.77 8.4 MLF JUN 01.7 7.7 MLF JUN 11.1380 10.1 AAA JUN 03.9650 8.0 AAA ---------------------------------------------------------------------------- 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 08.5715 <14.4 SRX JUN 10.000 13.5 MUY JUN 09.5271 13.7 SRX ---------------------------------------------------------------------------- 1944+36A V811 CYGNI The dwarf nova type (SS CYG subclass) cataclysmic variable V811 CYG appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 10.012 14.5: MUY JUN 11.9403 14.5 HSG ---------------------------------------------------------------------------- 2043+41 V516 CYGNI The dwarf nova type (SS CYG subclass) cataclysmic variable V516 CYG is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 06.2810 17.14 CCDV ZRE JUN 10.031 14.3 PYG JUN 08.049 <15.5 PYG JUN 11.1375 14.1 MKJ JUN 09.1403 <14.2 MKJ ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: AAA - A. AVELINO, BRAZIL MUY - E. MUYLLAERT, BELGIUM BRJ - J. BORTLE, USA PYG - G. POYNER, ENGLAND HSG - G. HANSON II, USA SRX - R. STUBBINGS, AUSTRALIA MKJ - J. MCKENNA, USA WPX - P. WILLIAMS, NEW ZEALAND MLF - L. MONARD, SOUTH AFRICA 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! Rebecca Pellock, Technical Assistant on behalf of Janet A. Mattei, Director ____________________________________________________________________________ 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! ____________________________________________________________________________