RX J0558.3+6753 outburst According to Pavol A. Dubovsky (vsnet-obs 39223), the ROSAT-selected catclysmic variable RX J0558.3+6753 is undergoing a bright outburst (mv=13.9 on Mar. 31.839 UT). 055818.0 +675345 (2000.0) RXJ0558.3+6753 17.0B CV 055818.7 +675321 (2000.0) 1RXS-F_J055818.8+675322 0.048 0.89 0.68 The last outburst occurred in 2001 April, at mv=14.0 (T. Kinnunen). The 2001 outburst apparently quickly faded (observed by the Nyrola team). Quick follow-up observations are strongly encouraged. Please also note that there is another "RX J0558" (V405 Aur). Please avoid any confusions caused by abbreviations, Regards, Taichi Kato VSNET Collaboration team