V503 Cyg superoutburst The well-known regular pattern of superoutbursts has been disturbed since the end of 2001. YYYYMMDD(UT) mag observer 20020412.051 <135 (Hazel McGee) 20020414.108 <142 (Hazel McGee) 20020430.015 <153 (Maciej Reszelski) 20020502.988 140 (Pavol A. Dubovsky) 20020503.047 146 (Maciej Reszelski) 20020505.049 138 (Hazel McGee) 20020508.003 145 (Pavol A. Dubovsky) 20020508.972 144 (Pavol A. Dubovsky) 20020510.007 143 (Pavol A. Dubovsky) 20020510.040 149 (Maciej Reszelski) 20020511.951 148 (Maciej Reszelski) 20020512.031 144 (Pavol A. Dubovsky)