V452 Cas superoutburst update YYYYMMDD(UT) mag observer 20000829.012 <158 (G. Poyner) 20000830.958 <150 (M. Reszelski) 20000830.983 <158 (C. P. Jones) 20000904.908 <150 (M. Reszelski) 20000906.010 <150 (M. Reszelski) 20000910.948 <150 (C. P. Jones) 20000912.915 <150 (C. P. Jones) 20000912.988 <145 (G. Poyner) 20000918.101 <143 (M. Simonsen) 20000918.867 <150 (G. Poyner) 20000920.928 151 (C. P. Jones) 20000920.951 152 (G. Poyner) 20000921.010 151 (G. Poyner) 20000921.919 153 (M. Reszelski)