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: 0130+50 KT PER 0605+47 SS AUR No. 579 0217+70 AM CAS 0905+51 DI UMA February 22, 2000 0547-05 CN ORI 0945+34 RZ LMI ---------------------------------------------------------------------------- 0130+50 KT PERSEI The dwarf nova type (Z CAM subclass) cataclysmic variable KT PER is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 20.798 <14.1 OJR FEB 22.0069 13.1 BRJ FEB 20.804 <14.0 MUY FEB 22.0472 12.8 CGF FEB 21.806 13.7 PYG ---------------------------------------------------------------------------- 0217+70 AM CASSIOPEIAE The dwarf nova type (Z CAM subclass) cataclysmic variable AM CAS is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 16.0222 14.1 BRJ FEB 20.799 13.4 MUY FEB 17.816 <13.1 OJR FEB 20.802 13.0 OJR FEB 19.798 12.9 MUY FEB 22.0090 13.4 BRJ FEB 19.809 13.1 OJR FEB 22.0556 13.2 CGF ---------------------------------------------------------------------------- 0547-05 CN ORIONIS The dwarf nova type (Z CAM subclass) cataclysmic variable CN ORI is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 19.842 14.8: PYG FEB 21.840 13.3 PYG FEB 20.820 <13.8 OJR FEB 22.0188 12.9 BRJ FEB 20.835 <13.6 MUY FEB 22.4403 13.0 SRX ---------------------------------------------------------------------------- 0605+47 SS AURIGAE The dwarf nova type cataclysmic variable SS AUR is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 18.1090 16.15 CCDV ZRE FEB 20.851 11.0 MUY FEB 19.809 14.4 PYG FEB 20.873 11.0 SPK FEB 19.8597 13.9 JCN FEB 21.2257 10.8 SXN FEB 19.911 13.8 PYG FEB 21.774 10.9 PYG FEB 19.990 13.1 PYG FEB 21.807 10.8 MUY FEB 20.050 13.0 PYG FEB 21.84 11.3 GGX FEB 20.77 11.1 VET FEB 21.8431 10.9 JCN FEB 20.7708 10.5 MED FEB 21.954 11.0 SPK FEB 20.816 11.0 OJR FEB 22.0201 11.0 BRJ FEB 20.8382 11.0 CMG FEB 22.0632 11.3 CGF FEB 20.84 11.0 MOI FEB 22.0960 11.63 CCDV ZRE ---------------------------------------------------------------------------- 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 UT Mag. Initials FEB 21.788 15.0 PYG According to the AAVSO International Database this star is fainter than visual magnitude 15.8 during quiescence. ---------------------------------------------------------------------------- 0945+34 RZ LEONIS MINORIS The dwarf nova type (SU UMA subclass) cataclysmic variable RZ LMI is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 10.852 15.1: PYG FEB 19.926 13.8 PYG FEB 15.3153 <14.1 SXN FEB 21.913 13.8 PYG FEB 16.972 14.3 PYG FEB 22.0250 14.2 BRJ ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: BRJ - J. BORTLE, USA OJR - J. OSORIO, SPAIN CGF - G. CHAPLE JR., USA PYG - G. POYNER, ENGLAND CMG - G. COMELLO, NETHERLANDS SPK - P. SCHMEER, GERMANY GGX - G. GUZMAN, FRANCE SRX - R. STUBBINGS, AUSTRALIA JCN - C. JONES, ENGLAND SXN - M. SIMONSEN, USA MED - K. MEDWAY, ENGLAND VET - M. VERDENET, FRANCE MOI - E. MORILLON, FRANCE ZRE - R. ZISSELL, USA 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! ____________________________________________________________________________