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: 0058+40 RX AND 0945+12 X LEO No. 551 0130+50 KT PER 1051+50 CY UMA January 3, 2000 0309+42 QY PER 1109-37 V436 CEN 0518+00 BI ORI 1317-41 V803 CEN 0524-03 V1159 ORI 1612-54 HP NOR 0725+06 SV CMI 1904+43 MV LYR 0741-12 UY PUP 1944+36A V811 CYG 0814+73 Z CAM 2043+41 V516 CYG 0822+25 AT CNC ---------------------------------------------------------------------------- HAPPY NEW YEAR FROM THE AAVSO - ALL THE BEST IN 2000! ---------------------------------------------------------------------------- 0058+40 RX ANDROMEDAE The dwarf nova type (Z CAM subclass) cataclysmic variable RX AND is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 29.738 13.5 MUY JAN 02.1979 11.0 KB DEC 29.74 13.1 VET JAN 02.73 11.1 GUN DEC 30.1014 12.8 HSG JAN 02.795 11.0 OJR JAN 01.1542 13.0 KB JAN 02.884 11.0 MUY JAN 01.809 11.9 OJR ---------------------------------------------------------------------------- 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 DEC 27.1 <14.1 CGF DEC 30.802 12.1 OJR DEC 27.9653 12.4 CGF DEC 30.2313 12.8 HSG DEC 28.1229 12.2 SXN JAN 01.793 12.1 OJR DEC 28.799 12.5 MUY JAN 02.786 12.2 OJR DEC 29.744 12.1 MUY JAN 02.894 12.5 MUY ---------------------------------------------------------------------------- 0309+42 QY PERSEI The dwarf nova type cataclysmic variable QY PER is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 19.972 <14.9 PYG DEC 31.0000 14.28 CCDV ZRE DEC 28.1458 13.5 SXN JAN 01.0028 14.25 CCDV ZRE DEC 28.1660 13.6 SXN JAN 01.033 13.8 MRV DEC 29.731 13.9 MUY JAN 02.0019 14.30 CCDV ZRE DEC 29.8278 13.3 JCN JAN 02.014 14.0 PYG DEC 29.901 13.8 MGH JAN 02.791 14.2 OJR DEC 30.0806 13.5 HSG JAN 02.897 14.2: MUY DEC 30.1118 14.21 CCDV ZRE* JAN 03.2743 14.4 CCDV RR DEC 30.2278 13.8 HSG JAN 03.2799 14.1 CCDV RR DEC 30.2604 14.0 HSG JAN 03.3229 14.2 CCDV RR DEC 31.822 13.8 OJR * The observations listed above from ZRE are only a sampling of the full data file reported to the AAVSO. For a complete listing please see the Quick Look file on the AVSO web page. ---------------------------------------------------------------------------- 0518+00 BI ORIONIS The dwarf nova type cataclysmic variable BI ORI is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 23.324 16.5: CCDV OCN DEC 31.6625 14.2 SRX DEC 28.2319 <13.7 SXN JAN 01.4993 14.2 SRX DEC 29.4889 <14.2 SRX JAN 02.4917 14.2 SRX DEC 30.2431 14.3 HSG ---------------------------------------------------------------------------- 0524-03 V1159 ORIONIS The dwarf nova type (SU UMA subclass) cataclysmic variable V1159 ORI is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 30.2417 15.0: HSG JAN 02.2153 13.6 KB DEC 31.6618 <14.6 SRX JAN 02.4910 13.7 SRX JAN 01.4986 14.8 SRX JAN 02.961 13.5 OJR JAN 01.941 13.4 OJR ---------------------------------------------------------------------------- 0725+06 SV CANIS MINORIS The dwarf nova type (Z CAM subclass) cataclysmic variable SV CMI is undergoing an outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 18.3236 <14.3 SXN DEC 29.937 13.8 MUY DEC 28.771 13.4 PEX DEC 31.6479 14.0 SRX DEC 28.901 13.5 MUY JAN 01.5035 <14.3 SRX DEC 29.4979 13.4 SRX ---------------------------------------------------------------------------- 0741-12 UY PUPPIS The dwarf nova type (possible Z CAM subclass) cataclysmic variable UY PUP is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 20.5278 <14.0 SRX DEC 31.757 13.4 PEX DEC 30.2389 13.4 HSG JAN 01.4931 13.4 SRX DEC 31.6722 13.6 SRX JAN 02.5083 13.4 SRX ---------------------------------------------------------------------------- 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 DEC 30.1090 13.2 HSG JAN 02.907 12.1 MUY JAN 02.73 11.6 GUN ---------------------------------------------------------------------------- 0822+25 AT CANCRI The dwarf nova type (Z CAM subclass) cataclysmic variable AT CNC is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 20.003 14.8 PYG DEC 31.6465 13.0 SRX DEC 29.217 <14.0 MUY JAN 01.5618 13.4 SRX DEC 29.940 13.3 MUY JAN 02.5542 13.5: SRX ---------------------------------------------------------------------------- 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 DEC 29.040 <13.5 MGH DEC 31.6424 12.8 SRX DEC 29.219 <13.5 MUY DEC 31.799 12.8 PEX DEC 29.9 12.3 GUN JAN 01.6438 13.5 SRX DEC 29.962 12.6 MUY JAN 02.2257 14.3 KB DEC 30.2514 12.4 HSG ---------------------------------------------------------------------------- 1051+50 CY URSAE MAJORIS The dwarf nova type (SU UMA subclass) cataclysmic variable CY UMA is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 20.013 <14.4 PYG DEC 29.231 13.0 MUY DEC 26.951 12.5 MUY DEC 29.953 13.0 MUY DEC 28.889 12.8 MUY DEC 30.2597 13.6 HSG DEC 29.052 12.9 MGH ---------------------------------------------------------------------------- 1109-37 V436 CENTAURI The dwarf nova type (SU UMA subclass) cataclysmic variable V436 CEN is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 17.7257 <14.0 SRX JAN 01.5604 11.8 SRX DEC 31.6500 12.1 SRX JAN 01.6729 11.8 SRX DEC 31.819 12.2 PEX JAN 02.5368 12.0 SRX ---------------------------------------------------------------------------- 1317-41 V803 CENTAURI V803 CEN appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 17.7194 <14.2 SRX JAN 01.6556 12.5 SRX DEC 31.6549 13.3 SRX JAN 01.6722 12.5 SRX ---------------------------------------------------------------------------- 1612-54 HP NORMAE The dwarf nova type (Z CAM subclass) cataclysmic variable HP NOR appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 14.7104 <13.2 SRX DEC 31.6993 13.0 SRX DEC 17.7229 13.2 SRX JAN 01.6660 12.7 SRX DEC 17.7229 <13.2 SRX ---------------------------------------------------------------------------- 1904+43 MV LYRAE The variable star MV LYR appears to be fading, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 19.76 13.8 VET DEC 28.828 <13.2 MGH DEC 26.9681 14.1 BRJ DEC 29.73 14.8 VET DEC 28.0715 14.3 HSG DEC 30.0722 15.1: HSG ---------------------------------------------------------------------------- 1944+36A V811 CYGNI The dwarf nova type (SS CYG subclass) cataclysmic variable V811 CYG is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 28.0965 14.7 HSG DEC 30.0847 14.4 HSG DEC 29.721 13.8 MUY ---------------------------------------------------------------------------- 2043+41 V516 CYGNI The dwarf nova type (SS CYG subclass) cataclysmic variable V516 CYG appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 28.1007 <15.5 HSG DEC 30.0875 13.9 HSG ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: BRJ - J. BORTLE, USA OCN - S. O'CONNOR, CANADA CGF - G. CHAPLE JR., USA OJR - J. OSORIO, SPAIN GUN - J. GUNTHER, FRANCE PEX - A. PEARCE, AUSTRALIA HSG - G. HANSON II, USA PYG - G. POYNER, ENGLAND JCN - C. JONES, ENGLAND RR - R. ROYER, USA KB - W. KAMINSKI, USA SRX - R. STUBBINGS, AUSTRALIA MGH - H. MCGEE, ENGLAND SXN - M. SIMONSEN, USA MRV - R. MODIC, USA VET - M. VERDENET, FRANCE MUY - E. MUYLLAERT, BELGIUM ZRE - R. ZISSELL, USA 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! ____________________________________________________________________________