THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS 25 Birch Street, Cambridge, MA 02138 USA Tel. 617-354-0484 Fax 617-354-0665 INTERNET: aavso@aavso.org * * * AAVSO NEWS FLASH * * * Subject: 0139+37 AR AND 1544+28A R CRB No. 334 0207-63 WX HYI 1804+67 EX DRA August 24, 1998 0409-71 VW HYI 1953+77 AB DRA 0523-03 V1159 ORI 2043+41 V516 CYG 0547-05 CN ORI 2244-27 TY PSA ---------------------------------------------------------------------------- 0139+37 AR ANDROMEDAE The dwarf nova type cataclysmic variable AR AND is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials AUG 22.029 <15.2 PYG AUG 23.2840 12.1 BEB AUG 22.95 11.8 KTO AUG 23.89 11.9 KTO AUG 23.019 12.1 PYG AUG 23.9 11.6 VET AUG 23.2417 12.0 HSG AUG 23.970 12.9 OJR ---------------------------------------------------------------------------- 0207-63 WX HYDRI The dwarf nova type (SU UMA subclass) cataclysmic variable WX HYI is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials AUG 21.8042 14.8 SRX AUG 23.5236 13.7 SRX AUG 22.4278 <14.0 SRX AUG 23.8097 12.6 SRX AUG 22.5333 14.3 WPX AUG 23.886 12.4 MLF AUG 23.4840 13.8 WPX AUG 24.4819 12.1 WPX ---------------------------------------------------------------------------- 0409-71 VW HYDRI The dwarf nova type (SU UMA subclass) cataclysmic variable VW HYI is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials AUG 21.7986 13.8 SRX AUG 22.5625 13.1 WPX AUG 22.073 13.3 MLF AUG 23.4924 9.0 SRX AUG 22.3750 13.1 SRX AUG 23.895 9.3 MLF AUG 22.5139 12.9 SRX AUG 24.4909 10.0 WPX AUG 22.5291 13.2 WPX ---------------------------------------------------------------------------- 0523-03 V1159 ORIONIS The dwarf nova type (SU UMA subclass) cataclysmic variable V1159 ORI appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials AUG 21.7660 14.8 SRX AUG 23.8139 13.8 SRX ---------------------------------------------------------------------------- 0547-05 CN ORIONIS The dwarf nova type (Z CAM subclass) cataclysmic variable CN ORI appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials AUG 21.7646 12.6 SRX AUG 23.8160 12.7 SRX According to the AAVSO International Database this star is fainter than visual magnitude 14.5 during quiescence. ---------------------------------------------------------------------------- 1544+28A R CORONAE BOREALIS The R CRB prototype variable R CRB may be fading slightly, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials AUG 15.2333 5.9 HSG AUG 21.883 6.4 PYG AUG 15.903 6.1 BOS AUG 22.0993 6.2 MKJ AUG 15.906 6.2 PYG AUG 22.1021 6.2 BRJ AUG 15.935 6.0 DPA AUG 22.806 6.4 BSR AUG 16.877 6.0 BOS AUG 22.871 6.4 PYG AUG 16.913 6.1 PYG AUG 23.1035 6.4 BEB AUG 16.927 6.0 DPA AUG 23.1611 6.5 HSG AUG 17.881 6.1 PYG AUG 23.5278 6.4 MED AUG 18.891 6.1 PYG AUG 23.799 6.5 BSR AUG 19.0813 6.1 KMA AUG 23.8368 6.2 TUB AUG 19.833 6.2 BSR AUG 23.885 6.7 OJR AUG 20.0958 6.2 KMA AUG 24.1097 6.9 SET AUG 21.826 6.3 BSR AUG 24.2014 6.5 KB ---------------------------------------------------------------------------- 1804+67 EX DRACONIS The 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 AUG 21.915 15.3 PYG AUG 23.0604 14.0 CGF AUG 22.1 <14.5 CGF AUG 23.1535 13.6 HSG AUG 22.1618 <14.8 HSG AUG 23.2014 13.4 BTH AUG 22.909 14.4 PYG AUG 23.4368 13.4 HSG ---------------------------------------------------------------------------- 1953+77 AB DRACONIS The dwarf nova type (Z CAM subclass) cataclysmic variable AB DRA is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials AUG 22.0688 13.7 CGF AUG 23.0521 12.7 CGF AUG 22.0965 12.9 BRJ AUG 23.1521 12.9 HSG AUG 22.1604 12.9 HSG AUG 23.2361 12.6 BTH AUG 22.913 12.9 PYG ---------------------------------------------------------------------------- 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 AUG 21.910 <15.2 PYG AUG 23.0764 13.9 CGF AUG 22.1 <14.2 CGF AUG 23.1889 13.9 HSG AUG 22.961 14.3 PYG AUG 23.2493 14.0 BTH ---------------------------------------------------------------------------- 2244-27 TY PISCIS AUSTRINI The dwarf nova type (SU UMA subclass) cataclysmic variable TY PSA is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials AUG 19.4250 <14.8 SRX AUG 22.3979 11.7 SRX AUG 21.4340 <13.1 SRX AUG 23.5229 11.7 SRX AUG 21.7847 12.5 SRX AUG 23.834 11.7 MLF ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: BEB - R. BERG, USA MED - K. MEDWAY, ENGLAND BOS - E. BROENS, BELGIUM MKJ - J. MCKENNA, USA BRJ - J. BORTLE, USA MLF - L. MONARD, SOUTH AFRICA BSR - S. BARONI, ITALY OJR - J. OSORIO, SPAIN BTH - T. BURROWS, USA PYG - G. POYNER, ENGLAND CGF - G. CHAPLE JR., USA SET - C. STEPHAN, USA DPA - A. DIEPVENS, BELGIUM SRX - R. STUBBINGS, AUSTRALIA HSG - G. HANSON II, USA TUB - V. TUBOLY, HUNGARY KB - W. KAMINSKI, USA VET - M. VERDENET, FRANCE KMA - M. KOMOROUS, CANADA WPX - P. WILLIAMS, NEW ZEALAND KTO - T. KINNUNEN, FINLAND 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 ____________________________________________________________________________ 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 sending a message to: observations@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 We look forward to including your observations in future editions of AAVSO NEWS FLASH! ____________________________________________________________________________