THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS 25 Birch Street, Cambridge, MA 02138 USA Tel. 617-354-0484 Fax 617-354-0665 INTERNET: aavso@aavso.org * * * AAVSO NEWS FLASH * * * Subject: 0109+37 FO AND 1454+41 TT BOO No. 303 0822+25 AT CNC 1640+25 AH HER May 26, 1998 0945+12 X LEO 2103+36 V1060 CYG 1344+08 CR BOO 2209+12 RU PEG ---------------------------------------------------------------------------- 0109+37 FO ANDROMEDAE The dwarf nova type (SU UMA subclass) cataclysmic variable FO AND appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 24.4583 <14.7 HSG MAY 26.4514 14.1 HSG ---------------------------------------------------------------------------- 0822+25 AT CANCRI The dwarf nova type (Z CAM subclass) cataclysmic variable AT CNC is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 17.9000 <14.0 BMM MAY 23.0486 12.9 SWT MAY 18.0819 14.1 BRJ MAY 23.0868 13.1 BRJ MAY 18.3771 13.3 SRX MAY 24.0653 13.0 SWT MAY 19.0833 13.0 BRJ MAY 24.0896 13.1 BRJ MAY 22.0681 12.6 SWT ---------------------------------------------------------------------------- 0945+12 X LEONIS The dwarf nova type cataclysmic variable X LEO is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 23.1618 <15.3 HSG MAY 25.3653 12.3 SRX MAY 24.1597 <14.9 HSG MAY 26.2097 12.0 HSG MAY 24.8 12.5 VET MAY 26.2479 12.0 HSG MAY 25.07 12.2 DGP ---------------------------------------------------------------------------- 1344+08 CR BOOTIS The magnetic variable CR BOO appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 24.4181 <15.4 HSG MAY 26.2486 13.6 HSG MAY 26.2132 13.2 HSG MAY 26.4139 13.8: HSG MAY 26.2313 13.4 HSG ---------------------------------------------------------------------------- 1454+41 TT BOOTIS The dwarf nova type (SU UMA subclass) cataclysmic variable TT BOO appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 24.2188 <15.7 HSG MAY 26.4153 13.7 HSG MAY 26.2375 13.7 HSG ---------------------------------------------------------------------------- 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 MAY 22.1037 14.0 DPL MAY 24.1014 11.4 BRJ MAY 22.3120 13.38 CCDV ZRE MAY 24.1076 12.0 DPL MAY 22.3181 13.4 SQN MAY 24.1181 12.0: SWT MAY 22.957 13.4 PYG MAY 24.1430 12.14 CCDV ZRE MAY 23.1000 13.1 BRJ MAY 24.2215 12.0 HSG MAY 23.1563 12.9 SWT MAY 24.9 11.8 VET MAY 23.3993 12.9 HSG MAY 26.2410 11.9 HSG MAY 23.9 12.1 VET ---------------------------------------------------------------------------- 2103+36 V1060 CYGNI The dwarf nova type (SS CYG subclass) cataclysmic variable V1060 CYG appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 19.055 <15.1 PYG MAY 23.083 13.7 PYG MAY 23.035 13.8 PYG ---------------------------------------------------------------------------- 2209+12 RU PEGASI The dwarf nova type (SS CYG subclass) cataclysmic variable RU PEG is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 23.4299 12.7 HSG MAY 25.7278 12.2 SRX MAY 24.4479 12.5 HSG MAY 26.4424 11.5 HSG ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: BMM - M. BIESMANS, BELGIUM SQN - L. SHAW, USA BRJ - J. BORTLE, USA SRX - R. STUBBINGS, AUSTRALIA DGP - G. DYCK, USA SWT - R. STEWART, USA DPL - P. DOMBROWSKI, USA VET - M. VERDENET, FRANCE HSG - G. HANSON, USA 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 ____________________________________________________________________________ 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 sending a message to: observations@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 We look forward to including your observations in future editions of AAVSO NEWS FLASH! ___________________________________________________________________________