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: 1140-03 TW VIR 2138+43 SS CYG No. 980 1608-28 V893 SCO 2209+12 RU PEG June 18, 2002 1640+25 AH HER 1803+05 V426 OPH ---------------------------------------------------------------------------- 1140-03 TW VIRGINIS The dwarf nova type cataclysmic variable TW VIR appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 15.1681 <13.9 GTN JUN 17.3680 <13.0 SRX JUN 15.4000 <14.0 SRX JUN 18.4020 12.7 SRX ---------------------------------------------------------------------------- 1608-28 V893 SCORPII The dwarf nova type cataclysmic variable V893 SCO appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 16.1833 <13.3 SXN JUN 18.4180 12.7 SRX JUN 17.3600 <13.4 SRX JUN 18.4400 12.7 SRX ---------------------------------------------------------------------------- 1640+25 AH HERCULIS The dwarf nova type (Z CAM subclass) cataclysmic variable AH HER appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 17.0222 13.2 OCR JUN 18.1319 11.9 LJQ JUN 17.1479 13.2 TDB JUN 18.1326 11.9 LMK JUN 17.2479 13.6 SXN JUN 18.1597 11.5 TDB JUN 17.2813 13.4 BTH ---------------------------------------------------------------------------- 1803+05 V426 OPHIUCHI The dwarf nova type cataclysmic variable V426 OPH appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 16.1882 12.6 SXN JUN 18.1569 12.1 LMK JUN 16.5160 12.3 SRX JUN 18.4440 11.8 SRX JUN 17.2403 12.3 SXN JUN 18.4440 11.8 SRX JUN 17.5060 12.2 SRX ---------------------------------------------------------------------------- 2138+43 SS CYGNI The dwarf nova type (SS CYG subclass prototype) cataclysmic variable SS CYG appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 15.1833 11.9 KMA JUN 17.3194 11.7 SXN JUN 15.3243 12.0 AAP JUN 18.0409 10.9 OCR JUN 15.8908 12.0 BXA JUN 18.0438 11.0 GMY JUN 17.0006 11.9 OCR JUN 18.1799 10.6 TDB JUN 17.1681 11.6 TDB JUN 18.2021 10.6 KMA JUN 17.1771 11.8 ZPA JUN 18.2292 10.5 KRS JUN 17.3139 11.5 KMA ---------------------------------------------------------------------------- 2209+12 RU PEGASI The dwarf nova type (SS CYG subclass) cataclysmic variable RU PEG may be brightening, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 01.2875 12.5: KMA JUN 17.3493 11.5 KMA JUN 04.9757 12.3 RMQ JUN 17.6270 12.2 SRX JUN 12.6740 12.6 SRX JUN 18.2583 11.5 KMA ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: AAP - A. ABBOTT, CANADA LJQ - J. LINNOLT, USA BTH - T. BURROWS, USA OCR - C. OTTEN, BELGIUM BXA - A. BARANSKY, UKRAINE RMQ - M. RESZELSKI, POLAND GMY - M. GLENNON, IRELAND SRX - R. STUBBINGS, AUSTRALIA GTN - T. GANDET, USA SXN - M. SIMONSEN, USA KMA - M. KOMOROUS, CANADA TDB - D. TAYLOR, CANADA KRS - R. KOLMAN, USA ZPA - P. ZELLER, USA LMK - M. LINNOLT, USA Please monitor these and other variable stars closely and phone-in, fax, or e-mail your observations to the AAVSO. Good observing! Gamze Menali, 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! ____________________________________________________________________________