V503 Cyg outburst Unusually early outburst (interval about 10 d) YYYYMMDD(UT) mag observer 20020715.951 <142 (Eddy Muyllaert) 20020715.960 <146 (Pavol A. Dubovsky) 20020716.949 <142 (Eddy Muyllaert) 20020717.291 <142 (Mike Simonsen) 20020718.942 <142 (Eddy Muyllaert) 20020720.271 139 (Mike Simonsen)