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: 0124+57 KU CAS 2138+43 SS CYG No. 445 0945+12 X LEO 2209+12 RU PEG June 1, 1999 1841+37 AY LYR ---------------------------------------------------------------------------- 0124+57 KU CASSIOPEIAE The dwarf nova type (SS CYG subclass) cataclysmic variable KU CAS appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 11.96 <13.4 KTO MAY 29.031 13.3 MUY ---------------------------------------------------------------------------- 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 16.905 <14.4 PYG MAY 29.1194 12.0 GRI MAY 19.1202 <13.3 BEB MAY 30.0424 11.8 BVE MAY 26.892 12.2 MUY MAY 31.0576 12.2 GRI MAY 28.3660 12.1 SRX MAY 31.12 12.5 DGP MAY 28.894 12.2 MUY JUN 01.1806 12.5 RR ---------------------------------------------------------------------------- 1841+37 AY LYRAE The dwarf nova type (SU UMA subclass) cataclysmic variable AY LYR is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 28.9764 <14.2 JCN MAY 31.3674 13.4 CCDV COO MAY 31.3278 13.2 GRI MAY 31.89 13.4 GUN ---------------------------------------------------------------------------- 2138+43 SS CYGNI The dwarf nova type (SS CYG subclass prototype) cataclysmic variable SS CYG appears to be showing some low-level activity, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 27.076 11.9 PYG MAY 30.2840 10.9 KMA MAY 27.1021 11.6 BMM MAY 31.087 11.9 SPK MAY 27.2847 11.6 KMA MAY 31.3514 10.7 GRI MAY 27.383 11.4 MRV MAY 31.3667 11.2 BTH MAY 27.929 11.4 MUY MAY 31.89 10.8 GUN MAY 28.376 11.4 MRV MAY 31.9125 10.9 CMG MAY 28.3833 11.0 HK JUN 01.085 11.0 SPK MAY 28.986 11.5 MUY ---------------------------------------------------------------------------- 2209+12 RU PEGASI The dwarf nova type (SS CYG subclass) cataclysmic variable RU PEG appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 30.2889 12.6 KMA JUN 01.066 12.0 OB MAY 31.3556 11.8 GRI ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: BEB - R. BERG, USA JCN - C. JONES, ENGLAND BMM - M. BIESMANS, BELGIUM KMA - M. KOMOROUS, CANADA BTH - T. BURROWS, USA KTO - T. KINNUNEN, FINLAND BVE - E. VAN BALLEGOY, NETHERLANDS MRV - R. MODIC, USA CMG - G. COMELLO, NETHERLANDS MUY - E. MUYLLAERT, BELGIUM COO - L. COOK, USA OB - M. OVERBEEK, SOUTH AFRICA DGP - G. DYCK, USA PYG - G. POYNER, ENGLAND GRI - J. GRIESE III, USA RR - R. ROYER, USA GUN - J. GUNTHER, FRANCE SPK - P. SCHMEER, GERMANY HK - E. HALBACH, USA SRX - R. STUBBINGS, AUSTRALIA 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 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! ____________________________________________________________________________