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: 1902+11 V1548 AQL 1552+72 SS UMI No. 802 0043+56B GX CAS 1640+25 AH HER June 26, 2001 0217+70 AM CAS 1805-14 UZ SER 0803+62 SU UMA 1911-00 FO AQL 0829+53 SW UMA 1930+31 V795 CYG 0905+51 DI UMA 1953+77 AB DRA 1523+62 ES DRA 2335+12 HX PEG ---------------------------------------------------------------------------- 1902+11 V1548 AQL In the next issue of CCD Views we would like to include a comprehensive CCD light curve of V1548 AQL (a.k.a. N AQL 01, announced in Alert Notice 282 and News Flash #785), which has good CCD coverage to date. If you own a CCD with a V filter please carefully monitor and report your observations of V1548 AQL for the next month using AAVSO e & f scale charts. Also, if you have any unreported observations of this nova please submit them as soon as possible. ---------------------------------------------------------------------------- 0043+56B GX CASSIOPEIAE The dwarf nova type (SU UMA subclass) cataclysmic variable GX CAS is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 20.9229 <14.2 RMQ JUN 24.9284 13.6 RMQ JUN 24.0644 13.95 CCD DRG JUN 25.0669 13.7 PYG ---------------------------------------------------------------------------- 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 JUN 20.9201 15.0 RMQ JUN 24.9243 12.9 RMQ ---------------------------------------------------------------------------- 0803+62 SU URSAE MAJORIS The dwarf nova type (SU UMA subclass prototype) cataclysmic variable SU UMA appears to be undergoing an outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 20.9131 14.3 RMQ JUN 26.0877 13.17 CCDV WGR JUN 20.9550 14.1 PYG JUN 26.0984 13.31 CCDV WGR JUN 22.9270 13.4 GUN JUN 26.1093 13.24 CCDV WGR JUN 22.9270 13.4 GUN JUN 26.1194 13.14 CCDV WGR JUN 23.8950 11.9 GUN JUN 26.1293 12.98 CCDV WGR JUN 24.9117 13.3 RMQ JUN 26.1384 13.12 CCDV WGR JUN 25.1521 12.2 SXN JUN 26.1680 13.4: SXN ---------------------------------------------------------------------------- 0829+53 SW URSAE MAJORIS The dwarf nova type (SU UMA subclass) cataclysmic variable SW UMA is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 04.8862 17.1 CCD DRG JUN 23.8867 11.46 CCD DRG JUN 12.9194 <14.5 RMQ JUN 23.8950 10.5 GUN JUN 21.9300 <12.0 SPK JUN 23.9429 11.3 SPK JUN 22.9059 11.6 SPK JUN 24.9048 10.3 RMQ JUN 22.9169 11.5 SPK JUN 24.9730 11.3 SPK JUN 22.9259 11.5 SPK JUN 25.1556 10.5 SXN JUN 22.9270 10.7 GUN JUN 26.0839 11.20 CCDV ZRE JUN 22.9270 10.7 GUN JUN 26.1715 10.7 SXN JUN 22.9429 11.4 SPK ---------------------------------------------------------------------------- 0905+51 DI URSAE MAJORIS The dwarf nova type cataclysmic variable DI UMA appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 12.8719 <19.0 CCD DRG JUN 23.8960 15.60 CCD DRG JUN 12.9201 <14.6 RMQ JUN 24.9062 <14.6 RMQ JUN 20.9076 <14.6 RMQ ---------------------------------------------------------------------------- 1523+62 ES DRACONIS The dwarf nova type cataclysmic variable ES DRA is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 20.9312 15.5 RMQ JUN 24.9361 14.0 RMQ JUN 20.9879 <14.9 PYG JUN 24.9929 14.1 PYG JUN 23.9334 15.05 CCD DRG JUN 25.1770 14.2 SXN JUN 24.2207 14.1 SXN JUN 26.1888 14.2 SXN ---------------------------------------------------------------------------- 1552+72 SS URSAE MINORIS The dwarf nova type (SU UMA subclass) cataclysmic variable SS UMI appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 23.9424 18.5 CCD DRG JUN 24.9969 <15.0 PYG JUN 24.2444 <14.2 SXN JUN 25.1833 <14.7 SXN JUN 24.9325 15.6 RMQ ---------------------------------------------------------------------------- 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 25.2089 14.0 SXN JUN 26.0909 12.6 DPL JUN 25.9832 <12.8 CPT JUN 26.2006 12.9 SXN ---------------------------------------------------------------------------- 1805-14 UZ SERPENTIS The dwarf nova type (possible Z CAM subclass) cataclysmic variable UZ SER appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 18.2354 14.59 CCDV GKA JUN 25.2264 12.9 SXN JUN 18.5090 <13.6 SRX JUN 26.2242 13.3 SXN ---------------------------------------------------------------------------- 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 20.9660 <15.0 RMQ JUN 25.0610 14.3 PYG JUN 24.3028 13.6 SXN JUN 25.2596 13.3 SXN JUN 24.9722 14.0 RMQ ---------------------------------------------------------------------------- 1930+31 V795 CYGNI The dwarf nova type (SS CYG subclass) cataclysmic variable V795 CYG is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 21.0082 <15.0 RMQ JUN 24.9759 13.5 SPK JUN 22.9690 <13.4 SPK JUN 24.9958 13.5 RMQ JUN 24.0589 13.4 SPK JUN 25.0430 13.4 PYG JUN 24.3333 13.5 SXN JUN 25.2853 13.5 SXN ---------------------------------------------------------------------------- 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 JUN 20.9939 14.8 PYG JUN 24.9333 13.0 RMQ JUN 21.0167 14.1 POX JUN 25.0010 13.3 PYG JUN 24.0172 12.76 CCD DRG ---------------------------------------------------------------------------- 2335+12 HX PEGASI The dwarf nova type cataclysmic variable HX PEG appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 21.0243 <13.7 RMQ JUN 25.0117 <13.5 RMQ JUN 24.0536 13.90 CCD DRG ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: CPT - P. CHEVALLEY, SWITZERLAND RMQ - M. RESZELSKI, POLAND DPL - P. DOMBROWSKI, USA SPK - P. SCHMEER, GERMANY DRG - R. DIETHELM, SWITZERLAND SRX - R. STUBBINGS, AUSTRALIA GKA - K. GRAHAM, USA SXN - M. SIMONSEN, USA GUN - J. GUNTHER, FRANCE WGR - G. WALKER, USA POX - M. POXON, ENGLAND ZRE - R. ZISSELL, USA PYG - G. POYNER, ENGLAND 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! ____________________________________________________________________________