V503 Cyg superoutburst V503 Cyg appears to be undergoing a superoutburst. YYYYMMDD(UT) mag observer 20110626.974 <151 (Pavol A. Dubovsky) 20110628.931 <142 (Jose Ripero) 20110629.033 139 (Gary Poyner) 20110629.911 134 (Jose Ripero)