V503 Cyg outburst fading YYYYMMDD(UT) mag observer 20001019.781 <142 (E. Muyllaert) 20001019.899 <142 (H. McGee) 20001019.953 157: (G. Poyner) 20001020.833 <142 (P. A. Dubovsky) 20001020.910 <139 (M. Reszelski) 20001021.778 <150 (M. Reszelski) 20001022.181 143 (M. Simonsen) 20001022.806 155 (M. Reszelski) 20001022.810 <150 (G. Poyner) 20001023.060 <142 (M. Simonsen)