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: 0058+40 RX AND 1830+24A CH HER No. 1001 0742-52 V436 CAR 1830-37 BP CRA July 29, 2002 0814+73 Z CAM 1835-33 V3774 SGR 0939+52 ER UMA 1911-00 FO AQL 1102-55 V342 CEN 1916-28 V730 SGR 1140-03 TW VIR 1920-10 DH AQL 1552+72 SS UMI 1925+42 V1504 CYG 1719-35 V478 SCO 1951-09 UU AQL 1812+67 IX DRA ---------------------------------------------------------------------------- NOTE: We would like to inform our observers that the AAVSO Validation File was updated July 25. The updated file and lists of changes made have been posted on our website. (http://www.aavso.org/validation.stm) Please be sure to update your copy of the AAVSO Validation File. ---------------------------------------------------------------------------- 0058+40 RX ANDROMEDAE The dwarf nova type (Z CAM subclass) cataclysmic variable RX AND is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 21.3243 13.9 SXN JUL 28.0619 11.32 CCD DRG JUL 24.2361 <13.3 MDP JUL 28.4153 10.6 LMK JUL 27.0610 11.8 PYG JUL 28.8868 10.8 KWO JUL 27.8993 10.7 GUN JUL 28.9479 11.0 OJR JUL 28.0040 11.3 GRL JUL 29.0450 11.3 PYG ---------------------------------------------------------------------------- 0742-52 V436 CARINAE The dwarf nova type cataclysmic variable V436 CAR may be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 14.3760 <14.4 SRX JUL 29.3650 14.1 SRX JUL 27.3620 <14.1 SRX ---------------------------------------------------------------------------- 0814+73 Z CAMELOPARDALIS The dwarf nova type (Z CAM subclass prototype) cataclysmic variable Z CAM appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 28.9150 12.8 PYG JUL 29.2396 11.2 LMK ---------------------------------------------------------------------------- 0939+52 ER URSAE MAJORIS The dwarf nova type (SU UMA subclass) cataclysmic variable ER UMA may be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 28.2563 <14.3 LMK JUL 29.2514 13.6 LMK ---------------------------------------------------------------------------- 1102-55 V342 CENTAURI The dwarf nova type cataclysmic variable V342 CEN may be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 27.3680 <14.6 SRX JUL 29.3740 14.5 SRX ---------------------------------------------------------------------------- 1140-03 TW VIRGINIS The dwarf nova type cataclysmic variable TW VIR may be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 28.2847 <15.0 LMK JUL 29.3670 13.0 SRX ---------------------------------------------------------------------------- 1552+72 SS URSAE MINORIS The dwarf nova type (SU UMA subclass) cataclysmic variable SS UMI may be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 28.0078 17.1 CCD DRG JUL 28.9650 15.6 PYG JUL 28.8609 16.65 CCD DRG JUL 29.3333 <15.3 LMK ---------------------------------------------------------------------------- 1719-35 V478 SCORPII The dwarf nova type cataclysmic variable V478 SCO appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 26.3680 <14.8 SRX JUL 29.4030 14.8 SRX JUL 27.3880 15.0 SRX ---------------------------------------------------------------------------- 1812+67 IX DRACONIS The dwarf nova type cataclysmic variable IX DRA may be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 26.9550 <15.2 PYG JUL 28.9570 15.3 PYG ---------------------------------------------------------------------------- 1830+24A CH HERCULIS The dwarf nova type cataclysmic variable CH HER may be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 26.9430 <15.1 PYG JUL 28.9430 15.3: PYG JUL 28.8993 <14.0 OJR ---------------------------------------------------------------------------- 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 27.3870 <14.4 SRX JUL 29.4720 14.4 SRX JUL 29.4040 14.4 SRX ---------------------------------------------------------------------------- 1835-33 V3774 SAGITTARII The dwarf nova type cataclysmic variable V3774 SGR appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 15.5340 <15.0 SRX JUL 27.4130 15.1 SRX JUL 26.3710 <14.9 SRX JUL 29.4240 15.0 SRX ---------------------------------------------------------------------------- 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 JUL 28.2993 15.2 CCDR SNN JUL 29.2160 14.05 CCDV GKA JUL 28.3611 14.7 LMK JUL 29.4130 13.8 SRX JUL 29.0130 13.9 PYG ---------------------------------------------------------------------------- 1916-28 V730 SAGITTARII The variable V730 SGR appears to be brightening, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 15.5350 <14.6 SRX JUL 27.4260 13.8 SRX JUL 18.4060 <13.8 SRX JUL 28.3375 13.9 LMK JUL 26.3710 <14.0 SRX JUL 29.4250 14.0 SRX JUL 27.4120 13.8 SRX ---------------------------------------------------------------------------- 1920-10 DH AQUILAE The dwarf nova type (SU UMA subclass) cataclysmic variable DH AQL is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 26.3990 <13.2 SRX JUL 29.0140 12.6 PYG JUL 27.4260 12.6 SRX JUL 29.2201 12.30 CCDV GKA JUL 27.4420 12.6 SRX JUL 29.4150 12.6 SRX ---------------------------------------------------------------------------- 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 JUL 28.8836 19.5: CCD DRG JUL 28.9440 15.2 PYG JUL 28.9111 <14.2 OJR ---------------------------------------------------------------------------- 1951-09 UU AQUILAE The dwarf nova type cataclysmic variable UU AQL appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 29.2278 15.42 CCDV GKA JUL 29.4740 13.9 SRX JUL 29.4140 14.0 SRX ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: DRG - R. DIETHELM, SWITZERLAND MDP - P. MCDONALD, CANADA GKA - K. GRAHAM, USA OJR - J. OSORIO, SPAIN GRL - B. GRANSLO, NORWAY PYG - G. POYNER, ENGLAND GUN - J. GUNTHER, FRANCE SNN - J. SANFORD, USA KWO - W. KRIEBEL, GERMANY SRX - R. STUBBINGS, AUSTRALIA LMK - M. LINNOLT, USA SXN - M. SIMONSEN, 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 Kerri Malatesta, 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! ____________________________________________________________________________