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AAVSO Special Notice

Special Notice #225: A new UGWZ candidate in Pisces

December 1, 2010: A bright transient in Pisces was discovered by K. Itagaki at an unfiltered magnitude of 12.3 on 2010 November 30.50663 UT (JD 2455531.00663; reported by H. Yamaoka in vsnet-outburst 11854). The object was confirmed at V=12.1 by A. Oksanen (Muurame, Finland) shortly afterward (vsnet-outburst 11855), and I. Miller (Swansea, Wales, UK) reported the presence of superhumps with period 0.0571 day (reported by T. Kato, vsnet-outburst 11859). As noted by Yamaoka and by R.

Special Notice #224: Possible outburst of SDSS_J160501.35+203056.9

November 21, 2010: Hitoshki Yamaoka reports in VSNET-ALERT 12411 of the observation by Itagaki of SDSS J160501.35+203056.9, a suspected cataclysmic variable.  In quiescence, it is about mag20.  Itagaki-san's observation on 2010-11-21 was 12.0 unfiltered.  If confirmed, this would yield an outburst magnitude of 8 magnitudes, and would place it in the realm of the WZ Sge class, rare stars in the cataclysmic category that have superoutburst cycles of decades.  The spectra in Szkody, et al.

Special Notice #212: Bright Outburst of QZ Vir (= T Leo)


July 11, 2010: Hiroshi Matsuyama (MTH), Kanimbla, Queensland, Australia, reports and Rod Stubbings (SRX), Tetoora Road, Victoria, Australia, confirms that the SU UMa-type dwarf nova QZ Vir (formerly called T Leo) is in outburst, and possibly in superoutburst. Matsuyama reported it at visual magnitude 10.4 on July 9.409 UT (JD 2455386.909), and Stubbings at visual magnitude 10.0 on July 11.384 (JD 2455388.884).

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