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: 0939-20 SN 1999gh 0809-76 Z CHA No. 540 0130+50 KT PER 0854-24 VZ PYX December 6, 1999 0206+57A TZ PER 0945+34 RZ LMI 0207-63 WX HYI 1552+72 SS UMI 0547-05 CN ORI 1918+04 V1494 AQL (update) 0725+06 SV CMI 1958+16 RZ SGE ---------------------------------------------------------------------------- 0939-20 SUPERNOVA 1999gh IN NGC 2986 We have been informed by the Central Bureau for Astronomical Telegrams (IAU Circular 7328) that S. Nakano (Japan) reports that Kesao Takamizawa (Japan) discovered a supernova in NGC 2986 on Dec. 3.806 UT at photovisual magnitude 14.6. Nakano also reported that R. Kushida (Japan) obtained a CCD image of the supernova on Dec. 5.819 UT that showed it at CCD magnitude 14.8. A precise position of SN 1999gh, which is 52" east and 15.8" north of the center of the galaxy, was obtained by Y. Kushida (Japan) from R. Kushida's CCD image and reported by Nakano (IAU Circular 7328) as: R.A. = 09h 44m 19.75s Decl.= -21 degrees 16' 25.0" (Equinox 2000.0) For more information and a chart please see AAVSO Alert Notice 266 which will be available later today through the AAVSO web site at the following address: http://www.aavso.org Congratulations to Kesao Takamizawa on his discovery! ---------------------------------------------------------------------------- 0130+50 KT PERSEI The dwarf nova type (Z CAM subclass) cataclysmic variable KT PER is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 01.856 14.6: PYG DEC 05.031 12.1 PYG DEC 03.840 <14.0 MUY DEC 05.765 12.9 MUY DEC 03.930 13.9 PYG DEC 05.78 12.7 VET DEC 04.97 12.5 DGP ---------------------------------------------------------------------------- 0206+57A TZ PERSEI The dwarf nova type (Z CAM subclass) cataclysmic variable TZ PER is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 01.812 <14.0 MUY DEC 04.97 13.0 DGP DEC 01.840 14.3 PYG DEC 05.035 13.0 PYG DEC 03.844 13.5 MUY DEC 05.768 12.9 MUY DEC 03.942 13.6 PYG DEC 05.78 12.8 VET DEC 04.9514 13.2 JCN DEC 06.0681 12.6 MKJ ---------------------------------------------------------------------------- 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 DEC 01.4555 13.9 WPX DEC 05.4611 12.8 SRX DEC 01.6514 14.0 SRX DEC 05.6583 13.0 SRX ---------------------------------------------------------------------------- 0547-05 CN ORIONIS The dwarf nova type (Z CAM subclass) cataclysmic variable CN ORI is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 01.2333 <13.8 SXN DEC 05.078 13.0 PYG DEC 04.014 13.1 PYG DEC 05.7882 12.7 SRX ---------------------------------------------------------------------------- 0725+06 SV CANIS MINORIS The dwarf nova type (Z CAM subclass) cataclysmic variable SV CMI is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 02.298 16.4 CCDV OCN DEC 05.6681 13.6 SRX DEC 05.235 13.7: MUY ---------------------------------------------------------------------------- 0809-76 Z CHAMAELEONTIS The dwarf nova type (SU UMA subclass) cataclysmic variable Z CHA appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 01.6667 <14.0 SRX DEC 05.7278 14.0 SRX DEC 05.4604 14.0 SRX According to the AAVSO International Database this star is fainter than visual magnitude 14.5 during quiescence. ---------------------------------------------------------------------------- 0854-24 VZ PYXIDIS The dwarf nova type (SU UMA subclass) cataclysmic variable VZ PYX appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 01.6507 <14.4 SRX DEC 05.6563 13.2 SRX ---------------------------------------------------------------------------- 0945+34 RZ LEONIS MINORIS The dwarf nova type (SU UMA subclass) cataclysmic variable RZ LMI appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials NOV 20.110 15.0: PYG DEC 05.097 13.9 PYG DEC 01.3764 <13.5 SXN ---------------------------------------------------------------------------- 1552+72 SS URSAE MINORIS The dwarf nova type (SU UMA subclass) cataclysmic variable SS UMI appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 03.888 <15.4 PYG DEC 04.796 14.5 PYG ---------------------------------------------------------------------------- 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. 539: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials NOV 29.1042 <8.0 PKT DEC 04.73 4.5 CMH DEC 02.75 4.5 BLP DEC 04.7326 4.7 LME DEC 02.7504 4.5 KVL DEC 04.7528 4.6 JCN DEC 02.938 3.9 BGX DEC 04.7700 4.8 MQS DEC 03.29 3.7 CPJ DEC 04.792 4.1 BCW DEC 03.508 4.2 GUS DEC 04.9354 4.9 MKJ DEC 03.6542 4.5 PMC DEC 04.9389 4.9 GLG DEC 03.6667 4.2 ABG DEC 04.9833 4.8 SET DEC 03.674 4.3 KOY DEC 04.9896 4.6 AWI DEC 03.68 4.0 BLP DEC 05.0437 5.0 KB DEC 03.6972 3.8 KVL DEC 05.0694 5.4 COL DEC 03.7181 4.1 KVI DEC 05.1181 5.0 RR DEC 03.7188 3.9 MED DEC 05.6632 5.0 TTU DEC 03.719 4.1 PYG DEC 05.6806 5.0 FSE DEC 03.72 3.9 GUN DEC 05.687 4.9 TUB DEC 03.7257 4.7 GJJ DEC 05.6875 5.0 BSR DEC 03.7292 4.1 VBE DEC 05.6895 5.4 MMI DEC 03.73 4.1 VBE DEC 05.6965 5.3 ZAM DEC 03.743 4.0 BCW DEC 05.7083 5.1 BSR DEC 03.744 4.1 GMC DEC 05.7085 5.1 BEI DEC 03.7490 4.2 ONJ DEC 05.7118 5.4 VBE DEC 03.750 4.2 TUB DEC 05.7167 5.1 FSE DEC 03.7500 3.4 MQS DEC 05.72 5.1 CMH DEC 03.750 4.1 OJR DEC 05.722 5.0 MUY DEC 03.756 4.0 MUY DEC 05.726 5.3 FMC DEC 03.7813 4.0 JCN DEC 05.7292 5.3 BSR DEC 03.8125 4.5 TVL DEC 05.74 5.2 VET DEC 03.86 3.9 GUN DEC 05.74 5.1 RCH DEC 03.9236 4.3 DPL DEC 05.7500 5.3 BSR DEC 03.9389 4.2 GLG DEC 05.752 5.5 SPK DEC 03.9583 4.2 ZXI DEC 05.756 5.1 GLC DEC 03.9792 4.8 SET DEC 05.760 5.5 SPK DEC 03.9833 4.7 SAA DEC 05.764 5.5 SPK DEC 04.0049 5.0 MTM DEC 05.7715 5.3 FSE DEC 04.0377 4.1 AAP DEC 05.7757 5.4 AJO DEC 04.1181 4.4 RR DEC 05.8063 5.2 FSE DEC 04.125 4.4 LMK DEC 05.9306 5.3 MGQ DEC 04.22 4.0 CPJ DEC 05.9306 5.0 DPL DEC 04.6611 5.0 PEY DEC 05.9347 5.2 MHI DEC 04.6667 4.6: DOH DEC 05.9361 5.2 GLG DEC 04.6865 4.4 RMQ DEC 05.9667 5.0 MTM DEC 04.6944 4.5 TTU DEC 05.9670 5.3 BVM DEC 04.6958 4.8 FAA DEC 05.9722 5.1 RMO DEC 04.708 4.6 TUB DEC 05.9757 5.1 MTT DEC 04.719 4.6 PYG DEC 06.0160 5.2 DLA DEC 04.7215 4.9 FAA DEC 06.0625 5.1 DIL DEC 04.726 4.7 MUY DEC 06.0764 5.1 RR DEC 04.7292 4.0 BPL DEC 06.104 5.1 LMK DEC 04.7292 3.7 MED DEC 06.1042 5.1 BEB DEC 04.7292 4.6 RMQ DEC 06.6146 5.4 KMI DEC 04.73 4.9 FMC DEC 06.708 5.4 TUB ---------------------------------------------------------------------------- 1958+16 RZ SAGITTAE The dwarf nova type (SU UMA subclass) cataclysmic variable RZ SGE is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 01.797 <15.3 PYG DEC 04.786 13.5 PYG DEC 03.803 13.0 MUY DEC 05.733 <13.4 MUY ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: AAP - A. ABBOTT, CANADA LME - M. LYONS, ENGLAND ABG - B. ANDRESEN, NORWAY LMK - M. LINNOLT, USA AJO - J. AFONSO, SPAIN MED - K. MEDWAY, ENGLAND AWI - W. ANTHONY, USA MGQ - G. MENALI, USA BCW - C. BASSA, NETHERLANDS MHI - H. MENALI, USA BEB - R. BERG, USA MKJ - J. MCKENNA, USA BEI - J. BEISSER, GERMANY MMI - M. MOELLER, GERMANY BGX - G. BLAIR, USA MQS - S. MCCANN, ENGLAND BLP - P. BRLAS, HUNGARY MTM - M. MATTEI, USA BPL - P. BRIERLY, ENGLAND MTT - J. MATTEI, USA BSR - S. BARONI, ITALY MUY - E. MUYLLAERT, BELGIUM BVM - M. BRENTJENS, NETHERLANDS OCN - S. O'CONNOR, CANADA CMH - M. CHAPELET, FRANCE OJR - J. OSORIO, SPAIN COL - P. COLLINS, USA ONJ - J. O'NEILL, IRELAND CPJ - P. CORBALLY, USA? PEY - E. PIGGOTT, USA DGP - G. DYCK, USA PKT - J. PICKETT, USA DIL - W. DILLON, USA PMC - M. PROCTOR, USA DLA - A. DILL, USA PYG - G. POYNER, ENGLAND DOH - O. DRUCKER, ISRAEL RCH - C. RAMILLON, FRANCE DPL - P. DOMBROWSKI, USA RMO - M. ROZADA, VENEZUELA FAA - A. FROSINA, ITALY RMQ - M. RESZELSKI, POLAND FMC - M. FRANGEUL, FRANCE RR - R. ROYER, USA FSE - S. FOGLIA, ITALY SAA - A. STEPHAN, USA GJJ - J. GRNJA, YUGOSLAVIA SET - C. STEPHAN, USA GLC - C. GLOWINSKI, GERMANY SPK - P. SCHMEER, GERMANY GLG - G. GLIBA, USA SRX - R. STUBBINGS, AUSTRALIA GMC - M. GILL, ENGLAND SXN - M. SIMONSEN, USA GUN - J. GUNTHER, FRANCE TTU - T. TEZEL, TURKEY GUS - S. GURYANOV, RUSSIA TUB - V. TUBOLY, HUNGARY JCN - C. JONES, ENGLAND TVL - V. TUDOSE, HUNGARY? KB - W. KAMINSKI, USA VBE - B. VATANT, FRANCE KMI - M. KUZMIN, RUSSIA VET - M. VERDENET, FRANCE KOY - O. KRISTIANSEN, NORWAY WPX - P. WILLIAMS, NEW ZEALAND KVI - I. KOVACS, HUNGARY ZAM - M. ZANOTTA, ITALY KVL - V. KOISTINEN, FINLAND ZXI - X. ZHU, 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! ____________________________________________________________________________