AAVSO Special Notice #218
Outburst of the UGWZ star SDSS J080434.20+510349.2
September 21, 2010: As announced by Hiroyuki Maehara in vsnet-outburst 11547, the WZ Sge-type dwarf nova SDSS J080434.20+510349.2 is in outburst, and is also showing evidence of superhumps (vsnet-outburst 11551). Both visual and CCD observations -- including CCD time-series observations -- of this outburst are encouraged. The most recently posted visual observation by Patrick Schmeer (vsnet-outburst 11556) indicates the star is currently around m(vis) = 12.7.
This object is close to the Sun, with optimal viewing times being the pre-dawn hours. Please obtain a S/N of at least 20 per observation if possible, with higher S/N encouraged if exposure times can be kept shorter than a few minutes.
SDSS J080434.20+510349.2 is located at the following (J2000) coordinates:
RA: 08 04 34.20 , Dec: +51 03 49.2
Charts for SDSS J080434.20+510349.2 may be plotted using AAVSO's VSP:
Please promptly submit all observations to the AAVSO using the name
This AAVSO Special Notice was prepared by M. Templeton.
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Last Updated: September 21, 2010 - 11:03am