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+31 TW TRI 0939+52 ER UMA No. 567 0130+50 KT PER 0945+34 RZ LMI January 31, 2000 0139+37 AR AND 1953+77 AB DRA 0217+70 AM CAS 2043+41 V516 CYG 0641+28 IR GEM 2138+43 SS CYG 0814+73 Z CAM ---------------------------------------------------------------------------- 0130+31 TW TRIANGULI The dwarf nova type (Z CAM subclass) cataclysmic variable TW TRI appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JAN 27.0889 <14.7: SXN JAN 29.0333 13.5 SXN JAN 27.815 <13.9 MGH ---------------------------------------------------------------------------- 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 JAN 27.808 <14.0 MUY JAN 30.0014 12.5 BRJ JAN 29.0201 12.8 BRJ JAN 30.0813 12.5 DKS JAN 29.0417 12.4 SXN JAN 30.760 12.7 MUY JAN 29.783 12.1 OJR JAN 30.800 12.2 OJR ---------------------------------------------------------------------------- 0139+37 AR ANDROMEDAE The dwarf nova type cataclysmic variable AR AND is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JAN 29.1042 <14.9 HSG JAN 30.753 12.1 MUY JAN 30.0007 13.6 BRJ JAN 30.798 11.8 OJR JAN 30.0792 13.4 DKS ---------------------------------------------------------------------------- 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 JAN 29.0951 15.5: HSG JAN 30.0069 13.2 BRJ JAN 29.1299 <14.2 SXN JAN 30.757 13.0 MUY JAN 29.781 13.6 OJR JAN 30.784 12.8 OJR ---------------------------------------------------------------------------- 0641+28 IR GEMINORUM The dwarf nova type (SU UMA subclass) cataclysmic variable IR GEM is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JAN 29.2410 15.79 CCDV ZRE JAN 30.4847 13.2 SRX JAN 29.843 <14.5 OJR JAN 30.768 12.4 MUY JAN 30.0590 15.00 CCDV ZRE JAN 31.0576 12.4 DKS ---------------------------------------------------------------------------- 0814+73 Z CAMELOPARDALIS The dwarf nova type (Z CAM subclass prototype) cataclysmic variable Z CAM is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JAN 26.867 13.2 MUY JAN 29.3236 11.0 SXN JAN 27.866 13.1 MUY JAN 29.831 11.3 OJR JAN 28.2583 12.7 CKN JAN 30.1076 10.8 CKN JAN 29.0410 11.4 BRJ JAN 30.776 11.0 MUY JAN 29.1076 11.5 HSG JAN 30.8020 10.5 SJZ JAN 29.1660 12.0 CKN JAN 30.812 10.7 OJR ---------------------------------------------------------------------------- 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 JAN 28.1736 <14.2 SXN JAN 30.0229 12.0 BRJ JAN 29.0424 12.9 BRJ ---------------------------------------------------------------------------- 0945+34 RZ LEONIS MINORIS The dwarf nova type (SU UMA subclass) cataclysmic variable RZ LMI appears to be in outburst, as indicated by the following observation: AAVSO Observer UT Mag. Initials JAN 29.2736 13.9 SXN According to the AAVSO International Database this star is fainter than visual magnitude 15.0 during quiescence. ---------------------------------------------------------------------------- 1953+77 AB DRACONIS The dwarf nova type (Z CAM subclass) cataclysmic variable AB DRA is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JAN 29.0118 13.8 BRJ JAN 29.9903 12.7 BRJ JAN 29.0924 13.6 HSG JAN 30.744 12.7 MUY ---------------------------------------------------------------------------- 2043+41 V516 CYGNI The dwarf nova type (SS CYG subclass) cataclysmic variable V516 CYG is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JAN 08.0868 <15.5 HSG JAN 13.763 14.1 PYG JAN 08.751 15.4: PYG JAN 29.0833 14.1 HSG JAN 13.0000 14.0 BRJ ---------------------------------------------------------------------------- 2138+43 SS CYGNI The dwarf nova type (SS CYG subclass prototype) cataclysmic variable SS CYG appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JAN 29.0882 12.0 HSG JAN 31.0799 11.3 KB JAN 29.9806 11.5 MDP JAN 31.7306 10.1 FSE JAN 30.7458 11.7 FSE JAN 31.7340 10.1 FSE JAN 30.7510 11.6 SJZ ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: BRJ - J. BORTLE, USA MUY - E. MUYLLAERT, BELGIUM CKN - K. CASTLE, USA OJR - J. OSORIO, SPAIN DKS - S. DVORAK, USA PYG - G. POYNER, ENGLAND FSE - S. FOGLIA, ITALY SJZ - J. SPEIL, POLAND HSG - G. HANSON II, USA SRX - R. STUBBINGS, AUSTRALIA KB - W. KAMINSKI, USA SXN - M. SIMONSEN, USA MDP - P. MCDONALD, CANADA ZRE - R. ZISSELL, USA MGH - H. MCGEE, 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! ____________________________________________________________________________