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: 0905+51 DI UMA 1544+28A R CRB No. 386 0945+12 X LEO 1841+37 AY LYR January 22, 1999 ---------------------------------------------------------------------------- 0905+51 DI URSAE MAJORIS The dwarf nova type cataclysmic variable DI UMA appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JAN 10.961 <15.5 PYG JAN 21.860 14.8 PYG ---------------------------------------------------------------------------- 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 JAN 16.5535 <14.6 SRX JAN 22.1125 12.8 POX JAN 18.017 <13.5 MGH JAN 22.226 12.2 MUY JAN 21.3576 13.5 DPL JAN 22.4931 12.2 RR ---------------------------------------------------------------------------- 1544+28A R CORONAE BOREALIS The R CrB prototype variable R CrB is fading as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JAN 10.2577 7.5 BMM JAN 20.3889 9.1 KMA JAN 10.258 8.0 MUY JAN 22.238 9.2 MUY JAN 13.212 8.1 MUY JAN 22.5069 9.3 RR ---------------------------------------------------------------------------- 1841+37 AY LYRAE The dwarf nova type (SU UMA subclass) cataclysmic variable AY LYR may be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JAN 10.264 <14.2 MUY JAN 13.217 <13.6 MUY JAN 11.248 <13.6 MUY JAN 22.243 13.9: MUY ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: BMM - M. BIESMANS, BELGIUM POX - M. POXON, ENGLAND DPL - P. DOMBROWSKI, USA PYG - G. POYNER, ENGLAND KMA - M. KOMOROUS, CANADA RR - R. ROYER, USA MGH - H. MCGEE, ENGLAND SRX - R. STUBBINGS, AUSTRALIA MUY - E. MUYLLAERT, BELGIUM 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 Rebecca Pellock, 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! ____________________________________________________________________________