V1504 Cyg outburst YYYYMMDD(UT) mag observer 20010626.903 <154 (P. A. Dubovsky) 20010627.238 <143 (M. Simonsen) 20010629.265 <145 (M. Simonsen) 20010629.949 <148 (M. Reszelski) 20010629.988 <155 (G. Poyner) 20010630.301 <143 (M. Simonsen) 20010701.005 <153 (G. Poyner) 20010702.008 151 (G. Poyner) 20010702.317 <151 (M. Simonsen)