WZ Sge star

Alert Notice 714: TCP J21040470+4631129 to be observed with HST

Note: Additional HST observations may be scheduled, so please continue obtaining 2-3 V snapshots per week. When a decision is made about any further HST observations (and consequent cadence changes), that information will be communicated via the forum threads for this campaign. Please be sure to subscribe to stay informed! - Elizabeth O. Waagen, 1 October 2020

Note: The HST observations of TCP-J21040470+4631129 have been scheduled for

Sep 12, 2020 07:16:37 to 13:07:28 UT

Alert Notice 614 : Monitoring of GW Lib to support XMM-Newton observation

February 12, 2018: Dr. Koji Mukai (NASA Goddard Space Flight Center) and colleagues have requested AAVSO observations of the WZ Sge type dwarf nova GW Lib in support of observations with the ESA XMM-Newton spaceobservatory scheduled for

2018 February 17  05:46:41 - 21:36:41 UT

Alert Notice 165: Rare outburst of 0846+58 BZ Ursae Majoris

25 Birch Street, Cambridge, MA 02138 USA
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AAVSO ALERT NOTICE 165 (October 26, 1992)


Special Notice #390: New possible WZ Sge variable ASASSN-14jv

November 10, 2014: Astronomer's Telegram (ATel) #6676 (B.J. Shappee et al. 2014) notes the discovery of ASASSN-14jv, a bright optical transient found at V=11.3 on 2014 November 9.19 (JD 2456970.69). This object is suspected to be a cataclysmic variable of the WZ Sge subtype. Shappee et al. note that the source is less than one arcsecond away from a g=19.1 magnitude source in the Kepler Input Catalog, suggesting a large amplitude typical of UGWZ stars.

Special Notice #377: Reported outburst of the WZ Sge star AL Comae

December 6, 2013: Observer Carlo Gualdoni reports via the cvnet-outburst mailing list that the WZ Sge-type dwarf nova AL Comae is in outburst, with a magnitude of V=12.74 on 2013 December 6.185 (JD 2456633.1185).  Gary Poyner notes on the BAAVSS mailing list that this is the first observed outburst of AL Com since October 2007.  Both visual observations and CCD time series are encouraged.