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: 0109+37 FO AND 1140-03 TW VIR No. 574 0849+11 AK CNC 1612-54 HP NOR February 11, 2000 ---------------------------------------------------------------------------- 0109+37 FO ANDROMEDAE The dwarf nova type (SU UMA subclass) cataclysmic variable FO AND appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 08.0890 17.39 CCDV ZRE FEB 11.1042 15.3 HSG FEB 08.1132 <15.4 HSG FEB 11.2313 15.0 HSG FEB 09.840 <14.8 PYG ---------------------------------------------------------------------------- 0849+11 AK CANCRI The dwarf nova type (SU UMA subclass) cataclysmic variable AK CNC is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 07.006 <15.3 PYG FEB 10.916 13.5 MGH FEB 08.2264 <13.6 SXN FEB 10.918 13.5 MUY FEB 10.4743 <14.0 SRX FEB 11.5201 13.4 SRX ---------------------------------------------------------------------------- 1140-03 TW VIRGINIS The dwarf nova type cataclysmic variable TW VIR is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials FEB 08.375 15.4 CCDV OCN FEB 10.957 <13.9 MUY FEB 10.5076 <13.9 SRX FEB 11.5625 13.9 SRX FEB 10.774 13.9 PEX ---------------------------------------------------------------------------- 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 FEB 09.7208 14.5 SRX FEB 11.5681 13.6 SRX FEB 10.792 14.2 PEX ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: HSG - G. HANSON II, USA PYG - G. POYNER, ENGLAND MGH - H. MCGEE, ENGLAND SRX - R. STUBBINGS, AUSTRALIA MUY - E. MUYLLAERT, BELGIUM SXN - M. SIMONSEN, USA OCN - S. O'CONNOR, CANADA ZRE - R. ZISSELL, USA PEX - A. PEARCE, AUSTRALIA 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! ____________________________________________________________________________