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: 0411+50 NS PER 0855+18 SY CNC No. 556 0609+28 KR AUR 1307-60 NN CEN January 11, 2000 0647+16 KZ GEM 1640+25 AH HER 0845+03 CT HYA 1848+26 CY LYR ---------------------------------------------------------------------------- 0411+50 NS PERSEI The dwarf nova type cataclysmic variable NS PER may be in outburst, as indicated by the following observation: AAVSO Observer UT Mag. Initials JAN 09.889 15.5: PYG ---------------------------------------------------------------------------- 0609+28 KR AURIGAE The dwarf nova type (VY subclass) cataclysmic variable KR AUR appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 31.366 <17.3 CCDV OCN JAN 07.0382 <13.8 DPV JAN 03.76 <15.0 VET JAN 08.3257 <14.6 SXN JAN 06.935 <13.8 MUY JAN 11.2118 14.5: SXN JAN 06.951 <13.8 MGH ---------------------------------------------------------------------------- 0647+16 KZ GEMINORUM The dwarf nova type cataclysmic variable KZ GEM is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JAN 07.302 16.1: CCD SPK JAN 10.4951 14.2 SRX JAN 09.292 14.3 CCD SPK JAN 11.5417 14.2 SRX ---------------------------------------------------------------------------- 0845+03 CT HYDRAE The dwarf nova type (SS CYG subclass) cataclysmic variable CT HYA appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JAN 04.090 <15.5 PYG JAN 10.7153 14.7 SRX JAN 04.6236 <15.0 SRX JAN 11.5361 14.9 SRX JAN 09.5285 <15.0 SRX JAN 11.5819 14.9 SRX JAN 10.5354 14.7 SRX ---------------------------------------------------------------------------- 0855+18 SY CANCRI The dwarf nova type (Z CAM subclass) cataclysmic variable SY CNC is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JAN 08.0160 12.8 POX JAN 09.5569 12.6 SRX JAN 08.2007 13.0 HSG JAN 09.987 12.0 PYG JAN 08.5549 12.9 SRX JAN 10.5826 12.6 SRX JAN 09.001 12.7 PYG JAN 10.79 12.1 GUN JAN 09.024 12.9 MGH JAN 11.5583 12.2 SRX ---------------------------------------------------------------------------- 1307-60 NN CENTAURI The dwarf nova type (SS CYG subclass) cataclysmic variable NN CEN appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JAN 09.5813 <14.4 SRX JAN 11.5986 13.7 SRX ---------------------------------------------------------------------------- 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 JAN 06.4380 13.94 CCDV ZRE JAN 11.21 12.1 GUN JAN 07.244 13.5 MUY ---------------------------------------------------------------------------- 1848+26 CY LYRAE The dwarf nova type cataclysmic variable CY LYR appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JAN 08.0694 <14.0 HSG JAN 11.21 12.9 GUN ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: DPV - P. DUBOVSKY, SLOVAKIA PYG - G. POYNER, ENGLAND GUN - J. GUNTHER, FRANCE SPK - P. SCHMEER, GERMANY HSG - G. HANSON II, USA SRX - R. STUBBINGS, AUSTRALIA MGH - H. MCGEE, ENGLAND SXN - M. SIMONSEN, USA MUY - E. MUYLLAERT, BELGIUM VET - M. VERDENET, FRANCE OCN - S. O'CONNOR, CANADA ZRE - R. ZISSELL, USA POX - M. POXON, 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, 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! ____________________________________________________________________________