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: FO And, SS Aur, EM Cyg, V811 Cyg, No. 252 T Leo, CZ Ori, V1159 Ori, SV Sge, TW Vir January 26, 1998 ________________________________________________________________________________ FO ANDROMEDAE The dwarf nova type (SU UMa subclass) cataclysmic variable FO And is undergoing an outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JAN 19.1035 <15.4 HSG JAN 25.1160 14.7 HSG JAN 19.840 <15.3 PYG JAN 26.1313 15.2 HSG JAN 24.833 14.6 PYG ----------------------------------------------------------------------------- SS AURIGAE The dwarf nova type (SS Cyg subclass) cataclysmic variable SS Aur is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JAN 24.873 14.8 PYG JAN 26.04 12.1 DGP JAN 25.1347 13.8 HSG JAN 26.1465 12.2 HSG JAN 25.2361 13.6 HSG JAN 26.3993 12.0 HSG JAN 25.4549 13.1 HSG JAN 26.7604 11.5 MED JAN 25.5257 13.0 HSG ----------------------------------------------------------------------------- EM CYGNI The dwarf nova type (Z Cam subclass) cataclysmic variable EM Cyg appears to be in outburst, as indicated by the following observations: AAVSO Observer UT Mag. Initials JAN 19.0771 13.4: HSG JAN 25.5431 12.7 HSG ----------------------------------------------------------------------------- V811 CYGNI The dwarf nova type (SS Cyg subclass) cataclysmic variable V811 Cyg appears to be in outburst, as indicated by the following observations: AAVSO Observer UT Mag. Initials JAN 19.0840 <14.8 HSG JAN 25.5458 13.9 HSG ----------------------------------------------------------------------------- T LEONIS The dwarf nova type (SU UMa subclass) cataclysmic variable T Leo is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JAN 25.088 <15.3 PYG JAN 26.105 10.4 PYG JAN 25.4611 13.9 HSG JAN 26.4042 10.7 HSG ----------------------------------------------------------------------------- CZ ORIONIS The dwarf nova type (SS Cyg subclass) cataclysmic variable CZ Ori is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JAN 25.2368 15.2: HSG JAN 26.04 12.4 DGP JAN 25.4563 <14.4 HSG JAN 26.1500 12.7 HSG ----------------------------------------------------------------------------- V1159 ORIONIS The dwarf nova type (SU UMa subclass) cataclysmic variable V1159 Ori appears to be in outburst, as indicated by the following observations: AAVSO Observer UT Mag. Initials JAN 24.904 <15.0 PYG JAN 25.1313 13.4 HSG ----------------------------------------------------------------------------- SV SAGITTAE The R CrB type variable SV Sge appears to be fading, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 02.765 10.6 PYG JAN 03.0694 11.3 HSG DEC 27.0618 11.2 HSG JAN 25.5493 12.5 HSG DEC 28.0639 11.4 HSG According to the AAVSO International Database this star last experienced a decline in January 1995. During this faint state SV Sge reached a minimum visual magnitude of 13.2 during February, 1995. ----------------------------------------------------------------------------- TW VIRGINIS The dwarf nova type (SS Cyg subclass) cataclysmic variable TW Vir appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JAN 21.2960 15.05 CCDV ZRE JAN 25.5410 13.8 HSG JAN 25.4632 13.8 HSG JAN 26.4063 13.7 HSG ----------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: DGP - G. Dyck, USA HSG - G. Hanson, USA MED - K. Medway, England PYG - G. Poyner, England ZRE - R. Zissell, 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! ______________________________________________________________________________