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: 0217+70 AM CAS 1617-55 IK NOR No. 1144 0640-16 HL CMA 1702-25 V2051 OPH April 16, 2003 0744-23 BV PUP 1707-65 V877 ARA 0750-24 BX PUP 1803+05 V426 OPH 0809-76 Z CHA 1903-17 V1089 SGR 0853-70 SY VOL 1916-28 V730 SGR 1612-54 HP NOR 1953+77 AB DRA 2244-27 TY PSA ---------------------------------------------------------------------------- 0217+70 AM CASSIOPEIAE The dwarf nova type (Z CAM subclass) cataclysmic variable AM CAS may be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 07.1000 <14.2 CGF APR 13.1014 13.8: CGF ---------------------------------------------------------------------------- 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 APR 14.4632 <13.7 MTH APR 15.4260 <12.2 SRX APR 15.3951 13.6 MTH APR 16.3940 11.8 SRX ---------------------------------------------------------------------------- 0744-23 BV PUPPIS The dwarf nova type (SS CYG subclass) cataclysmic variable BV PUP is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 11.3990 <14.4 SRX APR 15.4350 13.2 SRX APR 14.2812 13.0 LMK APR 16.3960 13.2 SRX ---------------------------------------------------------------------------- 0750-24 BX PUPPIS The dwarf nova type (Z CAM subclass) cataclysmic variable BX PUP is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 11.3990 <14.4 SRX APR 15.4340 14.2 SRX APR 14.2708 14.3 LMK APR 16.3960 14.3 SRX ---------------------------------------------------------------------------- 0809-76 Z CHAMAELONIS 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 APR 10.4350 <14.4 SRX APR 13.7850 12.8 SRX APR 11.4050 <14.0 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 10.4360 <14.4 SRX APR 13.7850 14.4 SRX APR 11.4050 <14.0 SRX ---------------------------------------------------------------------------- 1612-54 HP NORMAE The dwarf nova type (Z CAM subclass) cataclysmic variable HP NOR appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 09.4640 <13.6 SRX APR 11.4100 <13.0 SRX APR 10.4700 <13.4 SRX APR 13.7900 13.4 SRX ---------------------------------------------------------------------------- 1617-55 IK NORMAE The dwarf nova type cataclysmic variable IK NOR appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 10.4710 <13.6 SRX APR 13.7910 13.3 SRX ---------------------------------------------------------------------------- 1702-25 V2051 OPHIUCHI The dwarf nova type cataclysmic variable V2051 OPH appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 09.6500 <15.0 SRX APR 13.7560 14.5 SRX ---------------------------------------------------------------------------- 1707-65 V877 ARAE The dwarf nova type cataclysmic variable V877 ARA appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 09.6440 <14.6 SRX APR 13.7420 14.1 SRX ---------------------------------------------------------------------------- 1803+05 V426 OPHIUCHI The dwarf nova type cataclysmic variable V426 OPH appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 06.7090 12.6 SRX APR 11.3188 12.5 SXN APR 09.6680 12.7 SRX APR 13.7620 12.1 SRX ---------------------------------------------------------------------------- 1903-17 V1089 SAGITTARII The dwarf nova type cataclysmic variable V1089 SGR appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 05.7010 <14.6 SRX APR 13.7480 14.0 SRX APR 09.6710 <14.3 SRX ---------------------------------------------------------------------------- 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 05.7010 <14.8 SRX APR 09.6580 <14.0 SRX APR 06.7200 <14.0 SRX APR 13.7460 14.0 SRX ---------------------------------------------------------------------------- 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 APR 10.2396 <14.6 SXN APR 13.1028 12.7 CGF APR 11.0902 <13.1 OCR APR 13.2778 13.0 SXN ---------------------------------------------------------------------------- 2244-27 TY PISCIS AUSTRINI The dwarf nova type (SU UMA subclass) cataclysmic variable TY PSA appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 05.7480 <13.1 SRX APR 13.7780 11.8 SRX ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: CGF - G. CHAPLE JR., USA OCR - C. OTTEN, BELGIUM LMK - M. LINNOLT, USA SRX - R. STUBBINGS, AUSTRALIA MTH - H. MATSUYAMA, JAPAN SXN - M. SIMONSEN, 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! ____________________________________________________________________________