cataclysmic variable

Special Notice #89: Rare Outburst of 0103+59 HT Cas

January 10, 2008

Coordinates: RA 01:10:12.98 Dec. +60:04:35.9 (2000.0)

AAVSO observer Glenn Chaple, Townsend, MA, reports that the UGSS+EA type dwarf nova HT Cas is in outburst for the first time since February 2002, with his visual observation of 13.6 on January 10.0076 UT. Makoto Uemura and colleagues at Hiroshima University (vsnet-alert 9807) confirmed the outburst with an observation of 14.02V on January 10.5278 UT. This outburst looks to be a normal, brief outburst, probably lasting only 2-3 days.

AAVSO Special Notice #99: Campaign in support of SS Aurigae observations by XMM-Newton delayed

March 10, 2008: Further to AAVSO Alert Notice 371, we have been informed by Dr. Patrick Godon that XMM-Newton observations of the dwarf nova SS Aurigae have been delayed by the XMM-Newton Science Operations Center. They have not been issued a new date, and so the request for observations in Alert Notice 371 is now cancelled.
 
Please observe SS Aurigae as part of your normal observing program if you already do so, but increased coverage is not yet required.