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: AM Cas, CY Lyr, BI Ori, CN Ori, No. 244 HX Peg, IP Peg, UY Pup, ER UMa January 5, 1998 ________________________________________________________________________________ AM CASSIOPEIAE The dwarf nova type cataclysmic variable AM Cas appears to be in outburst, as indicated by the following observations: AAVSO Observer UT Mag. Initials DEC 28.1028 15.3: HSG JAN 02.1250 12.7 HSG JAN 03.1069 12.8 HSG ----------------------------------------------------------------------------- CY LYRAE The dwarf nova type cataclysmic variable CY Lyr appears to be in outburst, as indicated by the following observations: AAVSO Observer UT Mag. Initials DEC 31.9660 16.94 CCDV ZRE JAN 02.0931 <13.4 HSG JAN 03.0743 13.6 HSG ----------------------------------------------------------------------------- BI ORIONIS The dwarf nova type cataclysmic variable BI Ori is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 28.3167 <15.2 HSG JAN 03.2438 14.5 HSG DEC 31.4965 <15.0 SRX JAN 03.4701 14.1 SRX JAN 02.2368 14.4 HSG JAN 05.4944 14.1 SRX ----------------------------------------------------------------------------- CN ORIONIS The dwarf nova type (Z Cam subclass) cataclysmic variable CN Ori is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 31.5153 14.5 SRX JAN 03.2424 13.0 HSG DEC 31.947 14.5 PYG JAN 03.4750 12.7 SRX JAN 1.986 14.2 PYG JAN 05.4938 12.7 SRX JAN 02.2347 13.4 HSG ----------------------------------------------------------------------------- HX PEGASI The nova-like cataclysmic variable HX Peg is in outburst, as indicated by the following observations: AAVSO Observer UT Mag. Initials DEC 31.755 15.1 PYG JAN 02.1063 14.1 HSG JAN 02.763 13.5 PYG JAN 03.0972 13.5: HSG ----------------------------------------------------------------------------- IP PEGASI The dwarf nova type cataclysmic variable IP Peg appears to be in outburst, as indicated by the following observations: AAVSO Observer UT Mag. Initials JAN 03.0958 15.4 HSG JAN 04.12 12.9 KRB ----------------------------------------------------------------------------- UY PUPPIS The dwarf nova type (Z Cam subclass) cataclysmic variable UY Pup is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials DEC 31.5208 <15.0 SRX JAN 03.4715 13.6 SRX JAN 02.2542 <14.1 HSG JAN 05.4882 13.4 SRX JAN 03.2542 13.7 HSG ----------------------------------------------------------------------------- ER URSAE MAJORIS The dwarf nova type (SU UMa subclass) cataclysmic variable ER UMa appears to be in outburst, as indicated by the following observations: AAVSO Observer UT Mag. Initials JAN 02.2507 15.2: HSG JAN 03.2576 13.1: HSG ----------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: HSG - G. Hanson, USA KRB - R. King, USA PYG - G. Poyner, England SRX - R. Stubbings, Australia 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! _______________________________________________________________________________