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: 0058+40 RX AND 1234+21 IR COM No. 315 0130+50 KT PER 1556-40 EX LUP June 29, 1998 0401+50 FO PER 1841+43 V344 LYR 0939+52 ER UMA 1911-00 FO AQL 1129-11 TT CRT ---------------------------------------------------------------------------- 0058+40 RX ANDROMEDAE The dwarf nova type (Z CAM subclass) cataclysmic variable RX AND appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 28.052 13.7 PYG JUN 29.4125 12.4 HSG JUN 28.4222 13.7 HSG ---------------------------------------------------------------------------- 0130+50 KT PERSEI The dwarf nova type (Z CAM subclass) cataclysmic variable KT PER appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 27.4451 <14.7 HSG JUN 28.4292 13.6 HSG JUN 28.065 <14.1 PYG JUN 29.4194 12.7 HSG ---------------------------------------------------------------------------- 0401+50 FO PERSEI The dwarf nova type cataclysmic variable FO PER appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 27.4438 13.1 HSG JUN 29.4188 13.6 HSG JUN 28.4278 13.2 HSG According to the AAVSO International Database this star is fainter than visual magnitude 15.0 during quiescence. ---------------------------------------------------------------------------- 0939+52 ER URSAE MAJORIS The dwarf nova type (SU UMA subclass) cataclysmic variable ER UMA appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 25.9521 <14.2 BMM JUN 28.2431 13.1 HSG JUN 27.2674 <14.1 HSG ---------------------------------------------------------------------------- 1129-11 TT CRATERIS The dwarf nova type cataclysmic variable TT CRT appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 22.4229 <15.0 SRX JUN 27.3750 13.4 SRX JUN 26.3750 15.0 SRX JUN 27.4229 13.4 SRX ---------------------------------------------------------------------------- 1234+21 IR COMAE BERENICES The eclipsing dwarf nova type cataclysmic variable IR COM appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 27.2736 14.3 HSG JUN 28.2493 15.5: HSG JUN 27.2847 14.3 HSG JUN 28.2715 15.7: HSG JUN 27.2993 14.3 HSG According to the AAVSO International Database this star is fainter than visual magnitude 16.0 during quiescence. ---------------------------------------------------------------------------- 1556-40 EX LUPI EX LUP appears to be slowly brightening, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 01.992 13.6 OB JUN 17.917 12.8 OB JUN 02.975 13.6 OB JUN 18.975 12.6 OB JUN 05.114 13.2 OB JUN 19.786 12.8 OB JUN 06.022 13.2 OB JUN 21.729 12.6 OB JUN 15.055 13.2 OB JUN 22.918 12.9 OB JUN 15.719 12.6 OB JUN 24.980 12.8 OB JUN 16.046 13.2 OB JUN 26.002 12.8 OB JUN 16.979 13.0 OB JUN 26.728 12.4 OB ---------------------------------------------------------------------------- 1841+43 V344 LYRAE The dwarf nova type (SU UMA subclass) cataclysmic variable V344 LYR appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 21.991 <15.5 PYG JUN 28.072 14.3 PYG JUN 28.001 14.3 PYG ---------------------------------------------------------------------------- 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 26.3736 <15.4 HSG JUN 27.5833 13.2 SRX JUN 26.5167 <14.5 SRX JUN 28.051 14.0 PYG JUN 27.3028 13.8 HSG JUN 28.2813 13.8 HSG JUN 27.5583 13.2 SRX JUN 29.3875 14.0 HSG ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: BMM - M. BIESMANS, BELGIUM PYG - G. POYNER, ENGLAND HSG - G. HANSON, USA SRX - R. STUBBINGS, AUSTRALIA OB - M. OVERBEEK, SOUTH AFRICA Please monitor these and other variable stars closely and phone-in, fax, or e-mail your observations to the AAVSO. Good observing! Rebecca Pellock, 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 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! ____________________________________________________________________________