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: 0109+37 FO AND 1719-35 V478 SCO No. 342 0120+31 TY PSC 1803+05 V426 OPH September 14, 1998 0523-03 V1159 ORI 1903+17 SV SGE 0640-16 HL CMA 1958+56 V1028 CYG 0716+28 AW GEM 2131+40 V630 CYG 1640+25 AH HER 2335+12 HX PEG ---------------------------------------------------------------------------- 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 SEP 12.2580 17.74 CCDV ZRE SEP 14.2222 14.8 HSG SEP 13.2424 15.8: HSG ---------------------------------------------------------------------------- 0120+31 TY PISCIUM The dwarf nova type (SU UMA subclass) cataclysmic variable TY PSC is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials SEP 07.91 <14.0 KTO SEP 14.0521 12.9 DPL SEP 13.82 12.1 KTO ---------------------------------------------------------------------------- 0523-03 V1159 ORIONIS The dwarf nova type (SU UMA subclass) cataclysmic variable V1159 ORI is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials SEP 12.3970 15.18 CCDV ZRE SEP 14.4583 13.4 HSG SEP 14.395 13.5 OCN ---------------------------------------------------------------------------- 0640-16 HL CANIS MAJORIS The dwarf nova type cataclysmic variable HL CMA appears to be in outburst, as indicated by the following observations: AAVSO Observer UT Mag. Initials SEP 14.4806 12.6 HSG According to the AAVSO International Database this star is fainter than visual magnitude 14.4 during quiescence. ---------------------------------------------------------------------------- 0716+28 AW GEMINORUM The dwarf nova type (SU UMA subclass) cataclysmic variable AW GEM appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials AUG 27.4632 <15.2 HSG SEP 14.4826 13.3 HSG ---------------------------------------------------------------------------- 1640+25 AH HERCULIS The dwarf nova type (Z CAM subclass) cataclysmic variable AH HER is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials SEP 12.0920 14.11 CCDV ZRE SEP 13.8354 11.8 CMG SEP 12.1931 13.6 BTH SEP 14.0313 11.8 DPL SEP 13.1354 12.7 BTH SEP 14.0417 11.1 BRJ SEP 13.1993 12.1 HSG SEP 14.0722 11.2 MKJ SEP 13.78 11.9 KTO SEP 14.1285 11.8 HSG ---------------------------------------------------------------------------- 1719-35 V478 SCORPII The dwarf nova type cataclysmic variable V478 SCO appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials SEP 10.4986 <14.5 SRX SEP 12.4063 14.2 SRX ---------------------------------------------------------------------------- 1803+05 V426 OPHIUCHI The dwarf nova type cataclysmic variable V426 OPH is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials SEP 13.179 11.4 OCN SEP 14.0438 11.3 BRJ According to the AAVSO International Database this star is fainter than visual magnitude 12.5 during quiescence. ---------------------------------------------------------------------------- 1903+17 SV SAGITTAE The R CrB type variable star SV SGE appears to be slowly brightening, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials AUG 28.008 15.0 PYG SEP 08.2049 14.2: HSG AUG 28.1007 <14.9 BRJ SEP 09.1479 14.2 HSG AUG 28.901 14.9 PYG SEP 09.894 14.4 PYG AUG 29.1035 15.0 BRJ SEP 13.2264 14.1 HSG AUG 29.902 14.9 PYG SEP 14.0826 14.0 BRJ SEP 01.905 <14.0 PYG ---------------------------------------------------------------------------- 1958+56 V1028 CYGNI The dwarf nova type (SU UMA subclass) cataclysmic variable V1028 CYG is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials SEP 09.1493 <15.6 HSG SEP 14.1333 13.8 HSG SEP 12.1910 14.0: BTH SEP 14.2313 13.6 HSG SEP 13.2139 13.8 HSG SEP 14.280 13.3 OCN SEP 13.2444 13.7 HSG SEP 14.4493 13.5 HSG SEP 13.866 13.6 KTO ---------------------------------------------------------------------------- 2131+40 V630 CYGNI The dwarf nova type (Possible SU UMA subclass) cataclysmic variable V630 CYG appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials SEP 09.1576 <15.2 HSG SEP 14.2306 14.2 HSG SEP 13.2250 14.6 HSG SEP 14.4479 14.2 HSG SEP 14.1319 14.4 HSG ---------------------------------------------------------------------------- 2335+12 HX PEGASI The dwarf nova type cataclysmic variable HX PEG appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials SEP 02.084 14.5: PYG SEP 13.85 12.7 KTO SEP 02.85 14.6: KTO ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: BRJ - J. BORTLE, USA MKJ - J. MCKENNA, USA BTH - T. BURROWS, USA OCN - S. O'CONNOR, CANADA CMG - G. COMELLO, NETHERLANDS PYG - G. POYNER, ENGLAND DPL - P. DOMBROWSKI, USA SRX - R. STUBBINGS, AUSTRALIA HSG - G. HANSON II, USA ZRE - R. ZISSELL, USA 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! Rebecca Pellock, Technical Assistant on behalf of Janet A. Mattei, Director ____________________________________________________________________________ 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! ____________________________________________________________________________