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: 0641+28 IR GEM 1719-35 V478 SCO No. 427 0804+28 YZ CNC 1804+67 EX DRA April 26, 1999 0854-24 VZ PYX 1830-37 BP CRA 0945+34 RZ LMI 1848+26 CY LYR 1608-28 V893 SCO 2244-27 TY PSA ---------------------------------------------------------------------------- 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 APR 24.863 <14.2 PYG APR 25.0850 12.47 CCDV ZRE APR 25.0736 12.8 BRJ APR 26.0667 12.6 MKJ ---------------------------------------------------------------------------- 0804+28 YZ CANCRI The dwarf nova type (SU UMA subclass) cataclysmic variable YZ CNC is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 22.07 <14.0 BRJ APR 25.0951 12.1 MKJ APR 25.0361 12.2 DPL APR 25.1180 12.40 CCDV ZRE APR 25.0479 12.6 CGF APR 26.0444 12.2 DPL APR 25.0764 12.2 BRJ APR 26.0833 11.8 MKJ ---------------------------------------------------------------------------- 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 APR 23.4146 <14.4 SRX APR 24.722 11.9 MLF APR 24.4049 12.4 SRX APR 25.3938 11.8 SRX APR 24.4354 12.3 SRX APR 25.728 11.7 MLF ---------------------------------------------------------------------------- 0945+34 RZ LEONIS MINORIS The dwarf nova type (SU UMA subclass) cataclysmic variable RZ LMI is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 20.1653 15.3: HSG APR 24.912 14.0 PYG APR 22.07 <14.3 BRJ APR 25.0799 14.0 BRJ ---------------------------------------------------------------------------- 1608-28 V893 SCORPII The dwarf nova type cataclysmic variable V893 SCO is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 23.705 14.7 PEX APR 25.7660 13.0 SRX APR 24.04 14.1 MLF APR 25.796 13.3 PEX APR 24.7750 14.0 SRX ---------------------------------------------------------------------------- 1719-35 V478 SCORPII The dwarf nova type cataclysmic variable V478 SCO is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 23.708 <15.5 PEX APR 25.708 14.7 PEX APR 24.7597 14.8 SRX APR 25.7549 14.8 SRX ---------------------------------------------------------------------------- 1804+67 EX DRACONIS The eclipsing dwarf nova type cataclysmic variable EX DRA is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 19.2293 15.4 CCDV ZRE APR 23.867 12.8 MUY APR 22.0 <14.0 CGF APR 25.0896 12.9 BRJ APR 22.0757 <14.0 BRJ APR 25.0944 13.1 CGF APR 22.892 <13.4 MUY APR 25.113 12.8 PYG ---------------------------------------------------------------------------- 1830-37 BP CORONAE AUSTRINAE The dwarf nova type (Z CAM subclass) cataclysmic variable BP CRA is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 23.729 <15.2 PEX APR 25.7312 14.0 SRX APR 24.7278 14.5 SRX APR 25.831 13.7 PEX ---------------------------------------------------------------------------- 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 APR 19.2880 16.87 CCDV ZRE APR 25.094 13.8 PYG APR 21.03 <13.6 KTO ---------------------------------------------------------------------------- 2244-27 TY PISCIS AUSTRINI The dwarf nova type (SU UMA subclass) cataclysmic variable TY PSA is undergoing an outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 23.7764 <14.4 SRX APR 25.7319 13.2 SRX APR 24.7472 12.3 SRX APR 25.904 13.6 PEX ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: BRJ - J. BORTLE, USA MLF - L. MONARD, SOUTH AFRICA CGF - G. CHAPLE JR., USA MUY - E. MUYLLAERT, BELGIUM DPL - P. DOMBROWSKI, USA PEX - A. PEARCE, AUSTRALIA HSG - G. HANSON II, USA PYG - G. POYNER, ENGLAND KTO - T. KINNUNEN, FINLAND SRX - R. STUBBINGS, AUSTRALIA MKJ - J. MCKENNA, USA 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! ____________________________________________________________________________