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: 1833-33 V4745 Sgr 1719-35 V478 SCO No. 1158 0058+40 RX AND 1723-46 AT ARA May 12, 2003 0804+28 YZ CNC 1815-83 NSV 10934 0855+18 SY CNC 1830+24A CH HER 1120-35 V442 CEN 1831+38 LL LYR 1215-17 TV CRV 1951-09 UU AQL 1518-75 AG APS 1953+77 AB DRA 1717-12 RY SER ---------------------------------------------------------------------------- NOTE: We would like to inform our observers that the AAVSO Validation File was updated May 7. The updated file and lists of changes made have been posted on our website. (http://www.aavso.org/validation.stm) Please be sure to update your copy of the AAVSO Validation File. ---------------------------------------------------------------------------- 1833-33 V4745 Sgr = Nova Sgr 2003 This new nova has re-brightened and continues to be bright, as indicated by the following selected observations reported to the AAVSO International Database since its discovery (information in AAVSO News Flashes 1150-1152): AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 27.4524 9.65 CCDV WJD MAY 07.1146 9.9 AAX APR 28.4222 9.60 CCDV DKS MAY 08.3542 8.2 AAX APR 29.1285 9.1 SQH MAY 09.0999 8.1 SQH APR 29.5900 9.3 SRX MAY 09.3625 8.2 AAX APR 30.4254 9.55 CCDV WJD MAY 09.6450 8.2 SRX APR 30.5347 9.3 MTH MAY 10.1554 8.09 CCDV LIW MAY 02.3958 8.6 PAH MAY 10.5368 8.3 MTH MAY 03.3854 8.8 PAH MAY 10.6690 8.0 SRX MAY 03.5257 9.3 ARX MAY 11.3410 8.1 AAX MAY 03.5960 9.3 SRX MAY 11.4576 8.0 LMK MAY 04.0830 9.3 SUG MAY 12.1194 8.1 SQH MAY 05.6010 9.4 SRX MAY 12.3541 8.1 AAX ---------------------------------------------------------------------------- 0058+40 RX ANDROMEDAE The dwarf nova type (Z CAM subclass) cataclysmic variable RX AND appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 09.8424 12.6 VJA MAY 11.1132 10.6 GUN ---------------------------------------------------------------------------- 0804+28 YZ CANCRI The dwarf nova type (SU UMA subclass) cataclysmic variable YZ CNC appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 05.8780 14.3 PYG MAY 10.3917 11.6 MTH MAY 06.3900 <12.1 SRX MAY 11.0951 11.5 CGF MAY 09.4007 11.9 MTH ---------------------------------------------------------------------------- 0855+18 SY CANCRI The dwarf nova type (Z CAM subclass) cataclysmic variable SY CNC appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 05.8880 13.3 PYG MAY 07.8993 12.6 BVE MAY 06.4260 13.1 SRX MAY 11.1007 11.7 CGF ---------------------------------------------------------------------------- 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 MAY 06.4120 <14.4 SRX MAY 09.5420 12.4 SRX MAY 06.4688 <13.2 PAW MAY 12.3451 13.6: LMK ---------------------------------------------------------------------------- 1215-17 TV CORVI The dwarf nova type cataclysmic variable TV CRV is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 04.4080 <14.8 SRX MAY 09.6100 13.1 SRX MAY 05.4290 <14.6 SRX MAY 10.4170 13.2 SRX MAY 06.4120 <14.6 SRX MAY 12.2604 14.2 CCD LVY MAY 09.5460 13.1 SRX MAY 12.3611 13.5 LMK ---------------------------------------------------------------------------- 1518-75 AG APODIS The dwarf nova type cataclysmic variable AG APS may be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 05.3990 <15.0 SRX MAY 09.6330 15.0 SRX MAY 06.4050 <14.8 SRX MAY 09.7010 15.0 SRX ---------------------------------------------------------------------------- 1717-12 RY SERPENTIS The dwarf nova type cataclysmic variable RY SER is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 04.5500 <14.8 SRX MAY 10.4868 13.5 LMK MAY 05.6100 <14.6 SRX MAY 10.6780 13.1 SRX MAY 09.6240 13.4 SRX ---------------------------------------------------------------------------- 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 MAY 05.5980 <15.0 SRX MAY 10.6600 14.7 SRX MAY 09.6440 14.8 SRX ---------------------------------------------------------------------------- 1723-46 AT ARAE The dwarf nova type (SS CYG subclass) cataclysmic variable AT ARA appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 05.5940 <14.4 SRX MAY 09.6200 14.2 SRX MAY 06.4520 <13.6 SRX MAY 10.6600 14.2 SRX ---------------------------------------------------------------------------- 1815-83 NSV 10934 The dwarf nova type cataclysmic variable NSV 10934 appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 09.6320 15.0 SRX MAY 10.4300 12.6 SRX MAY 09.7040 13.9 SRX ---------------------------------------------------------------------------- 1830+24A CH HERCULIS The dwarf nova type cataclysmic variable CH HER appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 05.9820 <15.5 PYG MAY 11.9830 15.0: PYG MAY 11.9830 15.0: PYG ---------------------------------------------------------------------------- 1831+38 LL LYRAE The dwarf nova type cataclysmic variable LL LYR appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 06.3049 <15.0 TDB MAY 11.9850 14.5 PYG MAY 10.0354 <14.3 GCO MAY 12.0100 14.4 PYG MAY 11.9850 14.5 PYG MAY 12.0100 14.4 PYG ---------------------------------------------------------------------------- 1951-09 UU AQUILAE The dwarf nova type cataclysmic variable UU AQL is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 05.6190 <14.0 SRX MAY 10.6850 11.3 SRX MAY 09.6180 11.4 SRX MAY 11.1146 12.2 GUN ---------------------------------------------------------------------------- 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 MAY 05.8970 14.7 PYG MAY 10.0659 12.7 OCR MAY 07.0333 14.7 HHU MAY 11.1319 12.7 CGF MAY 07.0694 <13.1 OCR MAY 11.9530 13.1 PYG ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: AAX - A. AMORIM, BRAZIL MTH - H. MATSUYAMA, JAPAN ARX - R. AXELSEN, AUSTRALIA OCR - C. OTTEN, BELGIUM BVE - E. VAN BALLEGOIJ, NETHERLANDS PAH - A. PRICE, MA CGF - G. CHAPLE JR., USA PAW - A. PLUMMER, AUSTRALIA DKS - S. DVORAK, USA PYG - G. POYNER, ENGLAND GCO - C. GUALDONI, ITALY SQH - R. SHIDA, BRAZIL GUN - J. GUNTHER, FRANCE SRX - R. STUBBINGS, AUSTRALIA HHU - H. HAUTECLER, BELGIUM SUG - G. SOSTERO, ITALY LIW - W. LILLER, CHILE TDB - D. TAYLOR, CANADA LMK - M. LINNOLT, USA VJA - J. VIRTANEN, FINLAND LVY - D. LEVY, USA WJD - J. WEST, 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! ____________________________________________________________________________