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: AR And, SY Cnc, AT Cnc, SV CMi No. 241 KU Cas, WW Cet, IR Gem, AH Her, December 29, 1997 AG Hya, WX Hyi, HP Nor, V1159 Ori, TZ Per, FO Per, KT Per, TY Psc, VZ Pyx ______________________________________________________________________________ AR ANDROMEDAE The dwarf nova type (SS Cyg subclass) cataclysmic variable AR And is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 27.0 <14.9 CGF DEC 28.98 11.8 DGP DEC 27.2951 <14.5 HSG DEC 29.004 11.8 CGF DEC 27.4681 <14.5 SSU DEC 29.0063 12.4 BRJ DEC 27.838 <15.2 PYG DEC 29.2563 12.0 HSG DEC 28.1083 <14.9 HSG DEC 29.4472 12.0 SSU DEC 28.75 12.9 VET ------------------------------------------------------------------------------ SY CANCRI The dwarf nova type (Z Cam subclass) cataclysmic variable SY Cnc is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 24.6250 12.9 SRX DEC 28.6361 12.0 SRX DEC 26.6069 12.8 SRX DEC 29.110 12.2 PYG DEC 27.3056 12.7 HSG DEC 29.5007 11.6 HSG DEC 28.3257 12.3 HSG DEC 29.5764 11.8 SRX ------------------------------------------------------------------------------ AT CANCRI The dwarf nova type (Z Cam subclass) cataclysmic variable AT Cnc is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 22.1611 <13.4 SWT DEC 26.1042 12.9 DGP DEC 24.2347 <14.0 SWT DEC 29.113 13.5 PYG ------------------------------------------------------------------------------ SV CANIS MINORIS The dwarf nova type (Z Cam subclass) cataclysmic variable SV CMi is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 22.1632 <13.0 SWT DEC 28.5021 13.7 SRX DEC 24.5417 <14.5 SRX DEC 29.5243 14.1 SRX DEC 26.5535 13.2 SRX ------------------------------------------------------------------------------ KU CASSIOPEIAE The dwarf nova type (SS Cyg subclass) cataclysmic variable KT Per is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 22.0990 20.12 ZRE CCDV DEC 28.1021 13.2 HSG DEC 24.2083 <13.8 SWT DEC 28.1861 13.4 BTH DEC 25.1986 <13.9 BTH DEC 28.3111 13.6 HSG DEC 26.1042 13.8 DGP DEC 29.0097 13.7 BRJ DEC 26.1847 13.5 BTH DEC 29.024 13.3 PYG DEC 26.986 13.2 CGF DEC 29.044 13.3 CGF DEC 27.1076 13.1 HSG DEC 29.0550 13.46 ZRE CCDV DEC 27.2896 13.3 HSG DEC 29.2722 13.7 HSG DEC 27.826 13.2 PYG ------------------------------------------------------------------------------ WW CETI The dwarf nova type cataclysmic variable WW Cet is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 24.5299 14.0 SRX DEC 28.5403 12.7 SRX DEC 26.5354 <13.1 SRX DEC 28.989 12.6 CGF DEC 28.4771 13.0 SRX DEC 28.9972 12.6 BRJ DEC 28.5000 12.9 SRX DEC 29.5097 11.9 SRX ------------------------------------------------------------------------------ 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 27.3028 <14.9 HSG DEC 29.096 13.6 CGF DEC 27.988 <14.7 PYG DEC 29.104 13.6 PYG DEC 28.3215 <16.0 HSG DEC 29.2130 13.30 ZRE CCDV DEC 28.5035 <13.6 SRX DEC 29.2660 13.2 HSG DEC 29.0326 13.7 BRJ DEC 29.5431 13.0 SRX ------------------------------------------------------------------------------ AH HERCULIS The dwarf nova type (Z Cam subclass) cataclysmic variable AH Her apeears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 27.5403 12.3 HSG DEC 29.5097 11.7 HSG DEC 28.5438 11.9 HSG ------------------------------------------------------------------------------ AG HYDRAE The dwarf nova type cataclysmic variable AG Hya appears to be in outburst as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 26.5750 <15.2 SRX DEC 29.5375 14.3 SRX DEC 28.5104 14.3 SRX ------------------------------------------------------------------------------ WX HYDRI The dwarf nova type (SU UMa subclass) cataclysmic variable WX Hyi is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 24.5222 14.4 SRX DEC 26.5986 13.5 SRX DEC 26.5368 13.6 SRX DEC 28.4681 13.0 SRX DEC 26.5708 13.5 SRX DEC 29.5069 13.7 SRX ------------------------------------------------------------------------------ HP NORMAE The dwarf nova type (Z Cam subclass) cataclysmic variable HP Nor may be in outburst as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 19.6792 <13.0 SRX DEC 28.6326 13.0 SRX DEC 24.6681 13.0 SRX ------------------------------------------------------------------------------ V1159 ORIONIS The dwarf nova type (SU UMa subclass) cataclysmic variable V1159 Ori is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 24.2236 <13.6 SWT DEC 29.0243 13.1 BRJ DEC 24.5375 13.5 SRX DEC 29.030 12.8 PYG DEC 24.6875 13.5 SRX DEC 29.069 13.2 CGF DEC 26.5438 12.6 SRX DEC 29.1250 13.24 ZRE CCDV DEC 27.070 13.2 CGF DEC 29.1480 13.18 ZRE CCDV DEC 27.2986 13.0 HSG DEC 29.2625 13.2 HSG DEC 28.3160 12.9 HSG DEC 29.5139 12.7 SRX DEC 28.4833 12.6 SRX ------------------------------------------------------------------------------ TZ PERSEI The dwarf nova type (Z Cam subclass) cataclysmic variable TZ Per is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 27.922 14.5 PYG DEC 29.039 14.3 PYG DEC 28.1056 14.4 HSG DEC 29.2701 13.6 HSG ------------------------------------------------------------------------------ FO PERSEI The dwarf nova type (Z Cam subclass) cataclysmic variable F Per is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 27.1153 <15.0 HSG DEC 29.0181 13.1 BRJ DEC 28.1076 13.6 HSG DEC 29.025 13.7 CGF DEC 28.3264 13.3 HSG DEC 29.2688 13.6 HSG DEC 28.75 13.5 VET ----------------------------------------------------------------------------- KT PERSEI The dwarf nova type (Z Cam subclass) cataclysmic variable KT Per is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 22.113 <13.8 MKJ DEC 28.75 12.8 VET DEC 24.2063 <13.2 SWT DEC 28.98 12.7 DGP DEC 26.991 12.2 CGF DEC 28.9888 12.7 DPL DEC 27.1104 12.5 HSG DEC 29.0076 12.8 BRJ DEC 27.938 12.3 PYG DEC 29.021 12.6 CGF DEC 28.1035 12.9 HSG DEC 29.053 12.8 PYG ----------------------------------------------------------------------------- TY PISCIUM The dwarf nova type (SU UMa subclass) cataclysmic variable TY Psc is in outburst as indicated byt the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 25.5014 <15.0 SSU DEC 28.98 12.3 DGP DEC 26.1889 <13.5 BTH DEC 28.9875 12.1 DPL DEC 27.008 12.3 CGF DEC 28.999 12.2 CGF DEC 27.4625 11.8 SSU DEC 29.0021 12.1 BRJ DEC 28.1924 11.9 BTH DEC 29.4375 11.9 SSU ----------------------------------------------------------------------------- VZ PYXIDIS The dwarf nova type (SU UMa subclass) cataclysmic variable VZ Pyx is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 22.5194 14.0 SRX DEC 28.4896 12.8 SRX DEC 24.5479 15.0 SRX DEC 28.6236 12.8 SRX DEC 24.5479 15.0 SRX DEC 29.5188 14.0 SRX DEC 26.5743 15.0 SRX ----------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: BRJ - J. Bortle, USA PYG - G. Poyner, England BTH - T. Burrows, USA SRX - R. Stubbings, Australia CGF - G. Chaple, USA SSU - S. Sakuma, Japan DGP - G. Dyck, USA SWT - R. Stewart, USA DPL - P. Dombrowski, USA VET - M. Verdenet, France HSG - G. Hanson, USA ZRE - R. Zissell, USA MKJ - J. McKenna, 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 ______________________________________________________________________________ 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! ______________________________________________________________________________