THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS 25 Birch Street, Cambridge, MA 02138 USA Tel. 617-354-0484 Fax 617-354-0665 INTERNET: aavso@aavso.org * * * AAVSO NEWS FLASH * * * Subject: 0207-63 WX HYI 0749+22 U GEM No. 374 0640-16 HL CMA 0905+51 DI UMA December 11, 1998 0641+28 IR GEM ---------------------------------------------------------------------------- 0207-63 WX HYDRI The dwarf nova type (SU UMA subclass) cataclysmic variable WX HYI appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 10.4806 14.5 SRX DEC 11.4660 12.8 SRX DEC 10.78 <13.7 MLF DEC 11.6014 12.4 SRX ---------------------------------------------------------------------------- 0640-16 HL CANIS MAJORIS The dwarf nova type cataclysmic variable HL CMA is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 10.5479 <13.0 SRX DEC 11.4882 11.6 SRX DEC 11.4410 11.3 HSG ---------------------------------------------------------------------------- 0641+28 IR GEMINORUM The dwarf nova type (SU UMA subclass) cataclysmic variable IR GEM is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 10.2800 16.69 CCDV ZRE DEC 11.4590 13.6 HSG DEC 10.3535 <14.3 KMA DEC 11.5986 13.2 SRX ---------------------------------------------------------------------------- 0749+22 U GEMINORUM The dwarf nova type (SS CYG subclass) cataclysmic variable U GEM is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 10.5771 <13.3 SRX DEC 11.215 12.3 KRB DEC 11.000 12.9 WBK DEC 11.4431 10.8 HSG DEC 11.055 13.1 WWJ DEC 11.4715 10.6 HSG DEC 11.139 12.6 WWJ DEC 11.5729 9.6 SRX ---------------------------------------------------------------------------- 0905+51 DI URSAE MAJORIS The dwarf nova type cataclysmic variable DI UMA may be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials NOV 26.4625 <15.5 HSG DEC 11.4688 14.8: HSG NOV 29.042 <14.2 PYG ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: HSG - G. HANSON II, USA SRX - R. STUBBINGS, AUSTRALIA KMA - M. KOMOROUS, CANADA WBK - B. WORRAKER, ENGLAND KRB - R. KING, USA WWJ - W. WILSON, ENGLAND MLF - L. MONARD, SOUTH AFRICA ZRE - R. ZISSELL, USA PYG - G. POYNER, ENGLAND 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 sending a message to: observations@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 We look forward to including your observations in future editions of AAVSO NEWS FLASH! ____________________________________________________________________________