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: 0243+37 PY PER 1925+42 V1504 CYG No. 373 1621+39 V844 HER December 10, 1998 ---------------------------------------------------------------------------- 0243+37 PY PERSEI The dwarf nova type (Z CAM subclass) cataclysmic variable PY PER appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 10.0410 13.7 BRJ DEC 10.050 13.3 CGF According to the AAVSO International Database this star is fainter than visual magnitude 15.5 during quiescence. ---------------------------------------------------------------------------- 1621+39 V844 HERCULIS The dwarf nova type cataclysmic variable V844 HER appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials NOV 10.744 <15.0 PYG DEC 10.474 12.8 MRV NOV 26.66 <14.0 KTO According to the AAVSO International Database the last outburst of V844 Her was in May 1997. ---------------------------------------------------------------------------- 1925+42 V1504 CYGNI The dwarf nova type (possible Z CAM subclass) cataclysmic variable V1504 CYG appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials NOV 10.848 <15.3 PYG DEC 10.011 14.6 CGF NOV 26.78 <14.8 KTO According to the AAVSO International Database this star is fainter than visual magnitude 16.0 during quiescence. ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: BRJ - J. BORTLE, USA MRV - R. MODIC, USA CGF - G. CHAPLE JR., USA PYG - G. POYNER, ENGLAND KTO - T. KINNUNEN, FINLAND 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! ____________________________________________________________________________