Skip to main content

WZ Sge-type

Special Notice #72: 1RXS_J023238.8-371812 rapid fading

October 12, 2007: A new large-amplitude cataclysmic binary, most likely a WZ Sge system, was discovered by K. Malek of the "Pi of the Sky" team in mid-September. It has been linked to the following ROSAT RASS object:


and has coordinates of

02:32:38.13 -37:17:54.7     J2000

It was about 11th magnitude upon discovery, and displayed superhumps with period 0.066d.

Special Notice #65: Support for HST Observations of PQ Andromedae

September 10, 2007: We have been informed by Dr. Paula Szkody that science observations of PQ Andromedae with the Hubble Space Telescope have been scheduled for this coming Wednesday, September 12, 2007 and Thursday, September 13, 2007 (UT). Dr. Szkody requests intensive coverage of this object through the night of September 11/12, 2007 (Tuesday/Wednesday UT) which is when the final decision will be made on whether PQ Andromedae is in quiescence and is deemed safe to observe.

Special Notice #63: Outburst in HS 2331+3905 [V455 And]

September 4, 2007: The WZ Sge-candidate object HS 2331+3905 [V455 And] has been reported in outburst on VSNET by two observers. This object was last reported as fainter than 14.6 on JD 2454347.3931 (Sept 3, 2007, 21:26 UT), and has now been detected at 14.59 and 14.4 by observers in Japan. HS 2331+3905 has never been observed in outburst before, and observations are strongly encouraged.

Special Notice #91: BZ UMa Monitoring for Polarization Measurements

January 14, 2008: Photometric and visual observations of the dwarf novae BZ UMa are

Special Notice #114: Rebrightening of the dwarf nova VY Aqr

July 22, 2008

Special Notice #122: Possible new WZ Sge-type dwarf nova in Andromeda [V466 And]

September 2, 2008


AAVSO 49 Bay State Rd. Cambridge, MA 02138 617-354-0484