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: 0106+34 FN AND 0945+34 RZ LMI No. 529 0524-03 V1159 ORI 0945-23 AG HYA November 15, 1999 0641+28 IR GEM 2023+43 V503 CYG 0803+62 SU UMA 2043+41 V516 CYG 0854-24 VZ PYX 2103+36 V1060 CYG 0945+12 X LEO ---------------------------------------------------------------------------- 0106+34 FN ANDROMEDAE The dwarf nova type cataclysmic variable FN AND is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials NOV 13.1354 <14.7 HSG NOV 15.0868 13.7 CGF NOV 14.1174 <14.7 KB NOV 15.1778 13.8 HSG NOV 14.889 <14.7 MUY NOV 15.4007 13.6 HSG NOV 15.0854 14.5 KB ---------------------------------------------------------------------------- 0524-03 V1159 ORIONIS The dwarf nova type (SU UMA subclass) cataclysmic variable V1159 ORI is undergoing an outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials NOV 11.336 14.7 CCDV OCN NOV 12.6958 13.8 SRX NOV 11.4799 <13.7 SRX NOV 13.4056 13.3 HSG NOV 11.958 <13.6 MUY NOV 14.934 <13.6 MUY NOV 12.5069 13.8 SRX NOV 15.4035 14.7 HSG ---------------------------------------------------------------------------- 0641+28 IR GEMINORUM The dwarf nova type (SU UMA subclass) cataclysmic variable IR GEM is undergoing an outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials NOV 08.426 16.4 CCDV OCN NOV 14.154 13.1 MRV NOV 09.956 <13.6 MUY NOV 14.464 13.9 CCDV BCY NOV 09.994 <15.2 PYG NOV 14.479 13.8 CCDV BCY NOV 11.962 <13.6 MUY NOV 14.497 13.9 CCDV BCY NOV 13.210 12.4 MUY NOV 14.948 14.6: MUY NOV 13.4160 12.3 HSG NOV 15.4076 15.4 HSG ---------------------------------------------------------------------------- 0803+62 SU URSAE MAJORIS The dwarf nova type (SU UMA subclass prototype) cataclysmic variable SU UMA is undergoing an outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials NOV 09.997 14.3 PYG NOV 13.224 12.0 MUY NOV 11.965 <13.9 MUY NOV 13.4264 12.0 HSG NOV 12.760 11.9 WDM NOV 14.942 13.0 MUY NOV 12.893 12.0 MUY NOV 15.4146 13.1 HSG ---------------------------------------------------------------------------- 0854-24 VZ PYXIDIS The dwarf nova type (SU UMA subclass) cataclysmic variable VZ PYX is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials NOV 08.6243 <14.4 SRX NOV 13.032 13.2 MLF NOV 12.6931 13.0 SRX ---------------------------------------------------------------------------- 0945+12 X LEONIS The dwarf nova type cataclysmic variable X LEO appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials NOV 13.219 <13.5 MUY NOV 15.4243 12.6 HSG NOV 13.4243 15.0 HSG ---------------------------------------------------------------------------- 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 observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials NOV 13.4431 13.6 HSG NOV 15.4222 13.8 HSG According to the AAVSO International Database this star is fainter than visual magnitude 16.0 during quiescence. ---------------------------------------------------------------------------- 0945-23 AG HYDRAE The dwarf nova type cataclysmic variable AG HYA appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials NOV 03.7146 <15.0 SRX NOV 12.7125 14.9 SRX NOV 08.6507 <14.5 SRX According to the AAVSO International Database this star is fainter than visual magnitude 15.5 during quiescence. ---------------------------------------------------------------------------- 2023+43 V503 CYGNI The dwarf nova type (SU UMA subclass) cataclysmic variable V503 CYG is undergoing an outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials NOV 13.132 15.8: CCDV BCY NOV 14.072 14.8 CCDV BCY NOV 13.1424 <15.2 HSG NOV 14.086 14.6 CCDV BCY NOV 13.143 15.5: CCDV BCY NOV 14.095 14.7 CCDV BCY NOV 13.150 14.7 CCDV BCY NOV 14.104 14.6 CCDV BCY NOV 13.154 15.3: CCDV BCY NOV 14.113 14.6 CCDV BCY NOV 13.164 15.4: CCDV BCY NOV 14.123 14.7 CCDV BCY NOV 13.176 15.2 CCDV BCY NOV 14.131 14.5 CCDV BCY NOV 13.186 15.1 CCDV BCY NOV 14.140 14.6 CCDV BCY NOV 13.196 15.1 CCDV BCY NOV 14.158 14.6 CCDV BCY NOV 13.206 15.1 CCDV BCY NOV 14.760 <14.2 MUY NOV 13.217 15.1 CCDV BCY NOV 15.1813 <15.2 HSG ---------------------------------------------------------------------------- 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 NOV 13.1431 <15.5 HSG NOV 15.0660 14.2 CGF NOV 14.761 14.1 MUY NOV 15.1813 14.4 HSG ---------------------------------------------------------------------------- 2103+36 V1060 CYGNI The dwarf nova type (SS CYG subclass) cataclysmic variable V1060 CYG appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials NOV 11.762 <14.6 MUY NOV 12.802 13.1 MUY NOV 12.802 13.1 MUY NOV 14.763 13.5 MUY ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: BCY - C. BRYJA, USA MUY - E. MUYLLAERT, BELGIUM CGF - G. CHAPLE JR., USA OCN - S. O'CONNOR, CANADA HSG - G. HANSON II, USA PYG - G. POYNER, ENGLAND KB - W. KAMINSKI, USA SRX - R. STUBBINGS, AUSTRALIA MLF - L. MONARD, SOUTH AFRICA WDM - M. WESTLUND, SWEDEN MRV - R. MODIC, 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! ____________________________________________________________________________