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 1830-37 BP CRA No. 645 0130+50 KT PER 1937+21 FY VUL July 17, 2000 1317-41 V803 CEN 2043+41 V516 CYG 1612-54 HP NOR 2053+25 VW VUL 1621+39 V844 HER 2125-03 VZ AQR ---------------------------------------------------------------------------- 0109+37 FO ANDROMEDAE The dwarf nova type (SU UMA subclass) cataclysmic variable FO AND may be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 06.4222 16.2: HSG JUL 12.053 <15.3 PYG JUL 07.3215 <14.0 SXN JUL 17.062 15.0: PYG JUL 09.4500 <15.4 HSG ---------------------------------------------------------------------------- 0130+50 KT PERSEI The dwarf nova type (Z CAM subclass) cataclysmic variable KT PER appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 12.049 14.9 PYG JUL 17.053 12.8 PYG ---------------------------------------------------------------------------- 1317-41 V803 CENTAURI The variable V803 CEN appears to be brightening, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 14.709 14.1 MLF JUL 16.550 13.0 SRX JUL 15.363 13.6 SRX JUL 17.399 13.3 SRX JUL 15.704 <14.2 MLF JUL 17.545 13.2 SRX JUL 16.385 13.0 SRX JUL 17.5451 12.9 PEX ---------------------------------------------------------------------------- 1612-54 HP NORMAE The dwarf nova type (Z CAM subclass) cataclysmic variable HP NOR appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 12.5312 <14.7 PEX JUL 17.407 13.0 SRX JUL 16.399 <13.0 SRX JUL 17.5472 13.4 PEX ---------------------------------------------------------------------------- 1621+39 V844 HERCULIS The dwarf nova type cataclysmic variable V844 HER appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 14.963 <15.0 PYG JUL 15.9597 <14.1 JCN JUL 15.2139 <14.1 SXN JUL 17.243 12.2 MRV ---------------------------------------------------------------------------- 1830-37 BP CORONAE AUSTRINAE The dwarf nova type (Z CAM subclass) cataclysmic variable BP CRA appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 08.688 <14.6 SRX JUL 16.554 14.3 SRX ---------------------------------------------------------------------------- 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 JUL 11.012 14.4 PYG JUL 12.2028 14.1 SXN JUL 11.2556 14.1 SXN JUL 17.004 13.7 PYG JUL 12.017 14.2 PYG ---------------------------------------------------------------------------- 2043+41 V516 CYGNI The dwarf nova type (SS CYG subclass) cataclysmic variable V516 CYG appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 12.012 <15.2 PYG JUL 13.901 <14.5 RMQ JUL 12.2597 <14.2 SXN JUL 16.997 14.1 PYG JUL 12.2639 <14.2 HSG ---------------------------------------------------------------------------- 2053+25 VW VULPECULAE The dwarf nova type cataclysmic variable VW VUL appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 12.001 15.4 PYG JUL 13.941 <13.7 OJR JUL 12.2340 <14.2 SXN JUL 16.987 13.7 PYG JUL 12.934 <13.7 OJR ---------------------------------------------------------------------------- 2125-03 VZ AQUARII The dwarf nova type cataclysmic variable VZ AQR appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 11.987 <13.7 MUY JUL 15.597 13.0 SRX JUL 13.571 <13.0 SRX JUL 16.557 13.0 SRX ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: HSG - G. HANSON II, USA PEX - A. PEARCE, AUSTRALIA JCN - C. JONES, ENGLAND PYG - G. POYNER, ENGLAND MLF - L. MONARD, SOUTH AFRICA RMQ - M. RESZELSKI, POLAND MRV - R. MODIC, USA SRX - R. STUBBINGS, AUSTRALIA MUY - E. MUYLLAERT, BELGIUM SXN - M. SIMONSEN, USA OJR - J. OSORIO, SPAIN 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! ____________________________________________________________________________