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: 0058+40 RX AND 1012+41 SN 1999GI No. 544 0524-03 V1159 ORI 1120-35 V442 CEN December 13, 1999 0822+25 AT CNC 1552+72 SS UMI 0939-20 SN 1999GH 1918+04 V1494 AQL ---------------------------------------------------------------------------- 0058+40 RX ANDROMEDAE The dwarf nova type (Z CAM subclass) cataclysmic variable RX AND is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 09.854 13.7 MUY DEC 11.1486 10.7 KB DEC 09.9979 13.5 BRJ DEC 11.1868 11.0 SXN DEC 10.0618 13.0 KB DEC 11.7222 11.4 MED DEC 10.0965 13.4 MKJ DEC 11.7350 11.0 SJZ DEC 10.72 11.4 GUN DEC 11.872 11.0 MUY DEC 10.73 11.6 GUN DEC 12.1326 11.2 MDP DEC 10.749 11.6 MUY DEC 12.73 11.8 PRO DEC 10.76 11.5 GUN DEC 12.9271 11.4 MED DEC 10.7830 11.5 SJZ DEC 12.982 11.6 OJR ---------------------------------------------------------------------------- 0524-03 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 DEC 10.4854 14.7 SRX DEC 11.3458 13.7 SXN DEC 11.1563 13.9 KB DEC 11.9792 13.8 DPV ---------------------------------------------------------------------------- 0822+25 AT CANCRI The dwarf nova type (Z CAM subclass) cataclysmic variable AT CNC appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 08.069 15.0 PYG DEC 08.4097 14.2 SXN DEC 08.217 <14.0 MUY DEC 11.4000 12.5 SXN ---------------------------------------------------------------------------- 0939-20 SN 1999GH We have received the following observations of the recent supernova, SN 1999gh: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 11.3924 15.1 CCDV RR DEC 12.425 15.2 CCD OCN ---------------------------------------------------------------------------- 1012+41 SN 1999GI We have received the following observations of the recent supernova, SN 1999gi: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 11.9583 14.2 DPV DEC 12.975 14.2 OJR DEC 12.3826 14.5 SCE ---------------------------------------------------------------------------- 1120-35 V442 CENTAURI The dwarf nova type (SS CYG subclass) cataclysmic variable V442 CEN is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 05.0 <13.2 OB DEC 13.5917 12.6 SRX DEC 11.944 12.6 OB ---------------------------------------------------------------------------- 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 07.756 15.3 PYG DEC 11.9722 13.8 DPV ---------------------------------------------------------------------------- 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. 543: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 02.7083 4.0 CPT DEC 11.685 6.2 GRL DEC 03.7188 4.2 CPT DEC 11.6940 6.2 SJZ DEC 03.7833 4.7 SHW DEC 11.6944 6.1 VOL DEC 04.9757 4.6 BVE DEC 11.7125 6.2 LSI DEC 05. 63 4.8 KRX DEC 11.725 6.2 PYG DEC 05.7500 5.2 CPT DEC 11.7257 6.0 MED DEC 06.0042 5.7 BVE DEC 11.741 6.1 TTF DEC 06.0382 5.6 NBJ DEC 11.9060 6.3 TYS DEC 06.7292 5.6 CPT DEC 11.9444 6.2 DPL DEC 07.7300 5.7 ONJ DEC 11.9444 6.1 GLG DEC 07.8229 5.6 CPT DEC 11.9535 6.0 LNZ DEC 08.7118 5.8 CPT DEC 11.9646 6.3 KS DEC 08.7333 5.9 HEV DEC 11.9743 6.0 MTM DEC 09.6785 6.2 MMI DEC 11.9840 6.1 BVE DEC 09.7400 6.1 ONJ DEC 12.0000 6.3 AAP DEC 09.7431 6.1 HEV DEC 12.0042 6.2 SXN DEC 09.9451 5.8 LNZ DEC 12.0300 6.2 PFJ DEC 09.9910 5.9 MTM DEC 12.0400 6.5 CLQ DEC 10.0500 6.2 NBJ DEC 12.04 6.3 PRO DEC 10.6507 6.1 SBX DEC 12.054 6.3 KRX DEC 10.6604 6.2 SBX DEC 12.0764 6.5 COL DEC 10.6701 6.0 GJJ DEC 12.09 6.2 LMK DEC 10.6920 6.3: SJZ DEC 12.0917 6.2 RR DEC 10.712 6.1 MUY DEC 12.1670 7.2 PTI DEC 10.7181 6.3 MMI DEC 12.729 6.2 TTF DEC 10.72 6.3 GUN DEC 12.73 6.4 PRO DEC 10.74 6.3 GUN DEC 12.781 6.3 OJR DEC 10.753 5.9 TTF DEC 12.781 6.2 PRO DEC 10.770 6.1 OJR DEC 12.79 6.5 PRO DEC 10.9917 6.1 BVE DEC 12.9479 6.1 GLG DEC 11.0028 6.1 HAB DEC 12.9806 6.2 SET DEC 11.0833 6.1 RR DEC 12.9896 6.0 AWI DEC 11.0917 6.1 KB DEC 13.0000 6.3 AAP DEC 11.097 6.2 LMK DEC 13.0472 6.3 KB DEC 11.26 6.19 CCDV GUN DEC 13.1021 6.5 COL DEC 11.677 6.0 BXT ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: AAP - A. ABBOTT, CANADA MKJ - J. MCKENNA, USA AWI - W. ANTHONY, USA MMI - M. MOELLER, GERMANY BRJ - J. BORTLE, USA MTM - M. MATTEI, USA BVE - E. VAN BALLEGOY, NETHERLANDS MUY - E. MUYLLAERT, BELGIUM BXT - T. BJERKGAARD, NORWAY NBJ - B. NIKOLAU, USA CLQ - L. CASON, USA OB - M. OVERBEEK, SOUTH AFRICA COL - P. COLLINS, USA OCN - S. O'CONNOR, CANADA CPT - P. CHEVALLEY, SWITZERLAND OJR - J. OSORIO, SPAIN DPL - P. DOMBROWSKI, USA ONJ - J. O'NEILL, IRELAND DPV - P. DUBOVSKY, SLOVAKIA PFJ - F. PRICE, USA GJJ - J. GRNJA, YUGOSLAVIA PRO - D. ROSOSKI, USA GLG - G. GLIBA, USA PTI - N. PEATTIE, USA GRL - B. GRANSLO, NORWAY PYG - G. POYNER, ENGLAND GUN - J. GUNTHER, FRANCE RR - R. ROYER, USA HAB - R. HAYS JR., USA SBX - A. SONKA, ROMANIA HEV - Z. HEVESI, HUNGARY SCE - C. SCOVIL, USA KB - W. KAMINSKI, USA SET - C. STEPHAN, USA KS - J. KNOWLES, USA SHW - W. SHERMAN, USA KRX - R. KEEN, USA SJZ - J. SPEIL, POLAND LMK - M. LINNOLT, USA SRX - R. STUBBINGS, AUSTRALIA LNZ - G. LENZ, USA SXN - M. SIMONSEN, USA LSI - S. LEONINI, ITALY TTF - T. TOBAL, SPAIN MDP - P. MCDONALD, CANADA TYS - R. TYSON, USA MED - K. MEDWAY, ENGLAND VOL - W. VOLLMANN, AUSTRIA 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! ____________________________________________________________________________