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: 0853-70 SY VOL 1807-27 V1830 SGR No. 1007 1017-49 V383 VEL 1903-17 V1089 SGR August 6, 2002 1251-32 V485 CEN 1920+52 V1113 CYG 1307-60 NN CEN 1925+42 V1504 CYG 1702-25 V2051 OPH ---------------------------------------------------------------------------- 0853-70 SY VOLANTIS The dwarf nova type cataclysmic variable SY VOL appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 30.3780 <14.8 SRX AUG 04.6580 <14.4 SRX JUL 31.4310 <14.6 SRX AUG 06.3690 14.0 SRX ---------------------------------------------------------------------------- 1017-49 V383 VELORUM The dwarf nova type (SS CYG subclass) cataclysmic variable V383 VEL appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 29.3740 <14.4 SRX AUG 01.3760 <14.1 SRX JUL 30.3770 <14.2 SRX AUG 06.3690 12.6 SRX JUL 31.3660 <14.0 SRX ---------------------------------------------------------------------------- 1251-32 V485 CENTAURI The dwarf nova type (SU UMA subclass) cataclysmic variable V485 CEN appears to be brightening, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 31.3670 <14.0 SRX AUG 06.3820 13.9 SRX AUG 01.3810 <14.4 SRX AUG 06.4650 13.9 SRX AUG 06.3740 13.9 SRX ---------------------------------------------------------------------------- 1307-60 NN CENTAURI The dwarf nova type (SS CYG subclass) cataclysmic variable NN CEN appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials AUG 01.4280 <14.8 SRX AUG 06.4660 13.9 SRX AUG 06.4020 13.9 SRX ---------------------------------------------------------------------------- 1702-25 V2051 OPHIUCHI The dwarf nova type (SU UMA subclass) cataclysmic variable V2051 OPH may be brightening, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials AUG 01.3980 15.0 SRX AUG 04.5710 15.0 SRX AUG 02.4910 15.0 SRX AUG 06.3960 14.2 SRX ---------------------------------------------------------------------------- 1807-27 V1830 SAGITTARII The dwarf nova type cataclysmic variable V1830 SGR appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials AUG 02.4920 <14.0 SRX AUG 06.4150 12.8 SRX AUG 04.6250 <14.0 SRX AUG 06.4390 12.8 SRX ---------------------------------------------------------------------------- 1903-17 V1089 SAGITTARII The variable star V1089 SGR appears to be brightening, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials AUG 01.4010 <14.6 SRX AUG 06.3830 14.0 SRX AUG 02.4880 <14.6 SRX AUG 06.3970 14.0 SRX AUG 03.4810 <14.4 SRX AUG 06.4370 14.0 SRX AUG 04.6050 <14.4 SRX ---------------------------------------------------------------------------- 1920+52 V1113 CYGNI The dwarf nova type (SS CYG subclass) cataclysmic variable V1113 CYG appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials AUG 02.3715 <16.3 LMK AUG 05.3312 <16.3 LMK AUG 03.2063 <14.8 SXN AUG 06.2569 14.0 SXN ---------------------------------------------------------------------------- 1925+42 V1504 CYGNI The dwarf nova type (SU UMA subclass) cataclysmic variable V1504 CYG may be brightening, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials AUG 01.1000 <14.5 CGF AUG 04.1000 <14.5 CGF AUG 02.8882 <14.3 OJR AUG 06.2556 14.2 SXN AUG 03.2056 <14.7 SXN ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: CGF - G. CHAPLE JR., USA SRX - R. STUBBINGS, AUSTRALIA LMK - M. LINNOLT, USA 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 Gamze Menali, 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! ____________________________________________________________________________