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: 0640-16 HL CMA 1848+26 CY LYR No. 1156 0838-65 RX VOL 1911-00 FO AQL May 5, 2003 0853-70 SY VOL 1916-28 V730 SGR 0953-67 OQ CAR 1920+52 V1113 CYG 1140-03 TW VIR 1934+30 EM CYG 1344+08 CR BOO 1937+21 FY VUL 1817+38 V391 LYR 1944+36A V811 CYG ---------------------------------------------------------------------------- 0640-16 HL CANIS MAJORIS The dwarf nova type (Z CAM subclass) cataclysmic variable HL CMA is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 04.2694 <13.5 LMK MAY 05.3740 12.0 SRX MAY 04.3780 <13.0 SRX ---------------------------------------------------------------------------- 0838-65 RX VOLANTIS The dwarf nova type (possible SU UMA subclass) cataclysmic variable RX VOL appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 28.4210 <15.0 SRX MAY 04.4420 14.7 SRX APR 29.4120 <15.0 SRX MAY 04.5310 14.7 SRX MAY 04.3880 14.7 SRX MAY 05.3940 14.7 SRX MAY 04.4100 14.7 SRX ---------------------------------------------------------------------------- 0853-70 SY VOLANTIS The dwarf nova type cataclysmic variable SY VOL appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 29.4110 <15.0 SRX MAY 04.5310 14.8 SRX MAY 04.3870 14.8 SRX MAY 05.3920 14.8 SRX ---------------------------------------------------------------------------- 0953-67 OQ CARINAE The dwarf nova type cataclysmic variable OQ CAR appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 29.4120 <15.0 SRX MAY 05.3930 14.4 SRX MAY 04.3870 <14.4 SRX ---------------------------------------------------------------------------- 1140-03 TW VIRGINIS The dwarf nova type cataclysmic variable TW VIR is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 30.3438 <15.0 LMK MAY 04.0910 13.2 TSC APR 30.5000 <14.3 MTH MAY 04.1410 12.9 SXN MAY 02.5880 12.8 SRX MAY 04.1549 12.5 CMP MAY 03.1722 12.3 CMP MAY 04.3056 12.8 LMK MAY 03.2743 13.2 SXN MAY 04.4060 12.8 SRX MAY 03.9097 12.9 HHU MAY 05.0958 13.3 TSC MAY 03.9514 12.9 BXV MAY 05.4280 13.4 SRX ---------------------------------------------------------------------------- 1344+08 CR BOOTIS The cataclysmic variable CR BOO is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 29.3396 15.2 CCDV RR MAY 03.9347 13.9 GCO MAY 03.0490 13.7 MGH MAY 04.1757 13.4 SXN MAY 03.2819 13.5 SXN MAY 04.1812 13.9 SWT ---------------------------------------------------------------------------- 1817+38 V391 LYRAE The dwarf nova type (Z CAM subclass) cataclysmic variable V391 LYR appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 28.2604 <15.6 SXN MAY 04.2715 15.1 SXN MAY 03.3250 15.0 SXN ---------------------------------------------------------------------------- 1848+26 CY LYRAE The dwarf nova type cataclysmic variable CY LYR is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 04.2861 <14.8 TDB MAY 05.3785 13.3 CGF MAY 04.4000 <14.0 CGF MAY 05.5187 13.2 LMK ---------------------------------------------------------------------------- 1911-00 FO AQUILAE The dwarf nova type (SS CYG subclass) cataclysmic variable FO AQL is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 04.6740 <14.5 SRX MAY 05.6210 13.9 SRX MAY 05.5361 13.6 LMK ---------------------------------------------------------------------------- 1916-28 V730 SAGITTARII The dwarf nova type cataclysmic variable V730 SGR appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 29.6080 <14.4 SRX MAY 04.6730 14.4 SRX MAY 02.5940 <14.2 SRX MAY 05.6030 14.8 SRX MAY 04.5820 14.4 SRX ---------------------------------------------------------------------------- 1920+52 V1113 CYGNI The dwarf nova type (SS CYG subclass) cataclysmic variable V1113 CYG appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 24.3507 <16.3 TDB MAY 04.3042 13.8 SXN MAY 03.3778 13.8 SXN ---------------------------------------------------------------------------- 1934+30 EM CYGNI The dwarf nova type (Z CAM subclass) cataclysmic variable EM CYG is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 26.3438 13.9 TDB MAY 04.0674 12.5 GCO APR 26.3490 14.5 CCDV JM MAY 04.0694 12.3 OCR APR 29.3440 12.7 CCDV JM MAY 04.2896 12.3 SXN MAY 03.3646 12.5 SXN ---------------------------------------------------------------------------- 1937+21 FY VULPECULAE The dwarf nova type (Z CAM subclass) cataclysmic variable FY VUL appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 26.3650 14.5 CCDV JM MAY 03.3569 13.6 SXN APR 29.3660 14.2 CCDV JM MAY 04.2847 13.5 SXN ---------------------------------------------------------------------------- 1944+36A V811 CYGNI The dwarf nova type (SS CYG subclass) cataclysmic variable V811 CYG is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 26.3528 <15.5 TDB MAY 04.0833 13.8 GCO MAY 03.3736 <14.8 SXN MAY 04.3007 13.6 SXN ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: BXV - X. BROS, SPAIN MTH - H. MATSUYAMA, JAPAN CGF - G. CHAPLE JR., USA OCR - C. OTTEN, BELGIUM CMP - R. CAMPBELL, USA RR - R. ROYER, USA GCO - C. GUALDONI, ITALY SRX - R. STUBBINGS, AUSTRALIA HHU - H. HAUTECLER, BELGIUM SWT - R. STEWART, USA JM - R. JAMES, USA SXN - M. SIMONSEN, USA LMK - M. LINNOLT, USA TDB - D. TAYLOR, CANADA MGH - H. MCGEE, ENGLAND TSC - S. TRACY, 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! ____________________________________________________________________________