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: 0006-12 WW CET 1953+77 AB DRA No. 542 0217+70 AM CAS 2053+25 VW VUL December 9, 1999 0940+45 DV UMA 2335+12 HX PEG 1918+04 V1494 AQL(update) ---------------------------------------------------------------------------- 0006-12 WW CETI The dwarf nova type (possible Z CAM subclass) cataclysmic variable WW CET is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 07.9931 13.6 BRJ DEC 08.9493 12.4 CGF DEC 07.9931 13.6 BRJ DEC 08.96 12.4 DGP DEC 08.0153 13.1 CGF DEC 08.9903 12.5 BRJ DEC 08.8125 12.4 DPV ---------------------------------------------------------------------------- 0217+70 AM CASSIOPEIAE The dwarf nova type (Z CAM subclass) cataclysmic variable AM CAS is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 08.0014 14.9 BRJ DEC 08.9993 13.6 BRJ DEC 08.8194 13.4 DPV DEC 09.0201 12.8 CGF DEC 08.96 13.5 DGP ---------------------------------------------------------------------------- 0940+45 DV URSAE MAJORIS The dwarf nova type cataclysmic variable DV UMA appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 08.083 <15.5 PYG DEC 08.922 <14.7 KTO DEC 08.197 15.3: KTO DEC 08.998 14.6 KTO ---------------------------------------------------------------------------- 1918+04 V1494 AQUILAE Following are observations of the new nova in Aquila that have been submitted to the AAVSO since the release of News Flash No. 541: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 05.7222 5.2 LME DEC 08.8160 5.8 LME DEC 07.7292 5.4 FMI DEC 08.9000 5.6 TYS DEC 07.7431 5.5 MKC DEC 08.9305 5.7 MHI DEC 07.9542 5.7 KS DEC 08.9375 6.2 DPL DEC 07.9958 5.6 HAB DEC 08.9451 5.7 GLG DEC 08.0764 5.5 COL DEC 08.9583 5.8 KMA DEC 08.1042 5.7 MN DEC 08.9618 5.8 BRJ DEC 08.6632 5.7 TTU DEC 08.9653 5.8 MGQ DEC 08.6819 5.7 REP DEC 08.9687 5.8 MHI DEC 08.6990 5.8 SJZ DEC 08.9813 5.7 BRJ DEC 08.7125 5.7 FAA DEC 08.9826 5.5 WEO DEC 08.72 6.0 SCZ DEC 08.9938 5.9 SET DEC 08.723 5.7 PYG DEC 08.9944 5.8 HAB DEC 08.728 5.7 SPK DEC 09.0000 5.7 AAP DEC 08.750 6.1 TUB DEC 09.0014 5.8 BRJ DEC 08.753 5.8 ZAG DEC 09.0100 5.6 CLQ DEC 08.7604 5.9 DPV DEC 09.1007 5.5 RR ---------------------------------------------------------------------------- 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 DEC 07.9799 14.6 BRJ DEC 08.9785 12.6 BRJ DEC 08.0319 14.2 CGF DEC 09.0194 12.8 CGF DEC 08.96 12.9 DGP ---------------------------------------------------------------------------- 2053+25 VW VULPECULAE The dwarf nova type cataclysmic variable VW VUL appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 04.804 15.3 PYG DEC 08.96 13.7 DGP DEC 08.0 <14.2 CGF DEC 09.1139 14.2 CGF ---------------------------------------------------------------------------- 2335+12 HX PEGASI The dwarf nova type cataclysmic variable HX PEG may be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 03.897 13.7 PYG DEC 08.9743 13.6 BRJ DEC 04.842 13.6 PYG DEC 09.1049 13.0 SXN DEC 07.883 13.6 PYG ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: AAP - A. ABBOTT, CANADA MHI - H. MENALI, USA BRJ - J. BORTLE, USA MKC - C. MARLOT, FRANCE CGF - G. CHAPLE JR., USA MN - H. MASON, USA CLQ - L. CASON, USA PYG - G. POYNER, ENGLAND COL - P. COLLINS, USA REP - P. REINHARD, AUSTRIA DGP - G. DYCK, USA RR - R. ROYER, USA DPL - P. DOMBROWSKI, USA SCZ - E. SCHWEITZER, FRANCE DPV - P. DUBOVSKY, SLOVAKIA SET - C. STEPHAN, USA FAA - A. FROSINA, ITALY SJZ - J. SPEIL, POLAND FMI - M. FEIST, ENGLAND SPK - P. SCHMEER, GERMANY GLG - G. GLIBA, USA SXN - M. SIMONSEN, USA HAB - R. HAYS JR., USA TTU - T. TEZEL, TURKEY KMA - M. KOMOROUS, CANADA TUB - V. TUBOLY, HUNGARY KS - J. KNOWLES, USA TYS - R. TYSON, USA KTO - T. KINNUNEN, FINLAND WEO - E. WAAGEN, USA LME - M. LYONS, ENGLAND ZAG - G. ZAJACZ, HUNGARY MGQ - G. MENALI, 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! ____________________________________________________________________________