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: YZ Cnc, BP Cra, CZ Ori, RZ Sge No. 286 April 9, 1998 ____________________________________________________________________________ YZ CANCRI The dwarf nova type (SU UMa subclass) cataclysmic variable YZ Cnc is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 07.1580 14.87 CCDV ZRE APR 08.5007 12.1 SRX APR 07.4028 <12.3 SRX APR 09.2819 12.0 RR APR 08.2271 12.2 RR APR 09.4944 12.0 SRX ---------------------------------------------------------------------------- BP CRATERIS The dwarf nova type (Z Cam subclass) cataclysmic variable BP Cra appears to be in outburst, as indicated by the following observations: AAVSO Observer UT Mag. Initials APR 05.6354 <14.5 SRX APR 07.7417 14.0 SRX APR 08.6097 14.0 SRX ---------------------------------------------------------------------------- CZ ORIONIS The dwarf nova type cataclysmic variable CZ Ori is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 05.4063 <13.9 SRX APR 07.0618 12.5 MKJ APR 07.0347 12.5 SWT APR 07.3986 12.4 SRX ---------------------------------------------------------------------------- RZ SAGITTAE The dwarf nova type (SU UMa subclass) cataclysmic variable RZ Sge is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 05.5167 <16.3 HSG APR 07.7521 13.0 SRX APR 05.7451 <13.0 SRX APR 08.4569 13.1 HSG ----------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: HSG - G. Hanson, USA SRX - R. Stubbings, Australia MKJ - J. McKenna, USA SWT - R. Stewart, USA RR - R. Royer, USA 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! ___________________________________________________________________________