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: 0640-16 HL CMA 1701-32 FQ SCO No. 602 0905+51 DI UMA 1730-47 BF ARA April 6, 2000 1508+23 NY SER 1848+26 CY LYR 1542-42 AB NOR ---------------------------------------------------------------------------- 0640-16 HL CANIS MAJORIS The dwarf nova type cataclysmic variable HL CMA is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 04.1160 <14.1 KB APR 05.5208 12.0 PEX APR 04.1222 13.6: HSG APR 05.8 11.4 GUN APR 05.1222 13.4 HSG APR 06.333 11.7 LMK APR 05.1319 13.7 KB APR 06.4194 11.6 SRX APR 05.4056 11.9 SRX ---------------------------------------------------------------------------- 0905+51 DI URSAE MAJORIS The dwarf nova type cataclysmic variable DI UMA may be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 05.2194 <15.5 HSG APR 05.924 14.9 PYG ---------------------------------------------------------------------------- 1508+23 NY SERPENTIS The dwarf nova type (SU UMA subclass) cataclysmic variable NY SER may be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAR 26.051 <15.5 PYG APR 05.976 15.3 PYG ---------------------------------------------------------------------------- 1542-42 AB NORMAE The dwarf nova type cataclysmic variable AB NOR appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 05.4576 <14.6 SRX APR 06.5896 14.1 SRX APR 06.5569 14.0 SRX APR 06.6104 14.0 SRX APR 06.5729 14.1 SRX APR 06.6250 13.9 SRX APR 06.5792 14.0 SRX ---------------------------------------------------------------------------- 1701-32 FQ SCORPII The dwarf nova type (SS CYG subclass) cataclysmic variable FQ SCO appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 05.7521 15.0 SRX APR 06.5576 13.0 SRX ---------------------------------------------------------------------------- 1730-47 BF ARAE The dwarf nova type (SS CYG subclass) cataclysmic variable BF ARA is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 02.7465 <15.0 SRX APR 05.8125 14.0 PEX APR 05.7549 14.1 SRX APR 06.5806 14.1 SRX ---------------------------------------------------------------------------- 1848+26 CY LYRAE The dwarf nova type cataclysmic variable CY LYR is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAR 31.3130 16.61 CCDV ZRE APR 06.072 13.7 RMQ APR 04.4250 13.1 HSG APR 06.1 13.5 GUN APR 06.063 13.8 PYG ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: GUN - J. GUNTHER, FRANCE PYG - G. POYNER, ENGLAND HSG - G. HANSON II, USA RMQ - M. RESZELSKI, POLAND KB - W. KAMINSKI, USA SRX - R. STUBBINGS, AUSTRALIA LMK - M. LINNOLT, USA 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! ____________________________________________________________________________