THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS 25 Birch Street, Cambridge, MA 02138 USA Tel. 617-354-0484 Fax 617-354-0665 http://www.aavso.org * * * AAVSO NEWS FLASH * * * Subject: 0755+67 SN 2000ce No. 617 0206+57A TZ PER 1841+37 AY LYR May 10, 2000 0804+28 YZ CNC 1848+26 CY LYR 1140-03 TW VIR 2043+41 V516 CYG ---------------------------------------------------------------------------- 0755+67 SUPERNOVA 2000ce IN UGC 4195 IN CAMELEOPARDALIS We have been informed by the Central Bureau for Astronomical Telegrams (IAU Circular 7417) that Tim Puckett, Mountain Town, GA, discovered an apparent supernova on May 8.13 UT in UGC 4195 at unfiltered CCD magnitude 15.0. Puckett reported the position of the supernova, which is located 15.1" east and 17.3" north of the center of the galaxy, as: R.A. = 08h 05m 09.45s Decl. = +66 degrees 47' 15.2" (equinox 2000.0) For more information and an image of SN 2000ce including comparison star magnitudes please see AAVSO Alert Notice 275, which will be posted on the AAVSO web page shortly. Congratulations to Tim on his latest discovery! ---------------------------------------------------------------------------- 0206+57A TZ PERSEI The dwarf nova type (Z CAM subclass) cataclysmic variable TZ PER appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 01.1368 <14.0 HSG MAY 07.4597 13.5 HSG MAY 04.1375 13.9: HSG MAY 09.4563 12.9 HSG MAY 05.1403 13.8: HSG MAY 10.4528 12.8 HSG ---------------------------------------------------------------------------- 0804+28 YZ CANCRI The dwarf nova type (SU UMA subclass) cataclysmic variable YZ CNC appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 06.1660 <14.9 HSG MAY 10.1549 12.4 HSG MAY 07.2451 14.8: HSG MAY 10.2118 12.0 HSG MAY 08.0940 14.80 CCDV ZRE ---------------------------------------------------------------------------- 1140-03 TW VIRGINIS The dwarf nova type cataclysmic variable TW VIR is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 07.2493 15.0: HSG MAY 10.2132 14.2 HSG MAY 09.5028 <14.3 SRX MAY 10.4361 14.0 SRX MAY 10.1583 14.2 HSG ---------------------------------------------------------------------------- 1841+37 AY LYRAE The dwarf nova type (SU UMA subclass) cataclysmic variable AY LYR appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 09.4229 <15.5 HSG MAY 10.4264 13.6 HSG ---------------------------------------------------------------------------- 1848+26 CY LYRAE The dwarf nova type cataclysmic variable CY LYR appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 09.4215 <14.8 HSG MAY 10.4243 13.8 HSG ---------------------------------------------------------------------------- 2043+41 V516 CYGNI The dwarf nova type (SS CYG subclass) cataclysmic variable V516 CYG appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 09.4361 <15.5 HSG MAY 10.4340 14.2 HSG ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: HSG - G. HANSON II, USA ZRE - R. ZISSELL, USA SRX - R. STUBBINGS, AUSTRALIA 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 visiting the following web page: http://www.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 An archive of past issues of the News Flash is available at the following web page: http://www.aavso.org/newsflash/ We look forward to including your observations in future editions of AAVSO NEWS FLASH! ____________________________________________________________________________