CH UMa still slightly active YYYYMMDD(UT) mag observer 20010429.283 153 (R. J. Modic) 20010429.879 <140 (P. A. Dubovsky) 20010429.905 149 (G. Poyner) 20010430.889 <140 (P. A. Dubovsky) 20010430.906 146 (G. Poyner) 20010501.037 147 (M. Reszelski) 20010501.141 <140 (M. Simonsen) 20010501.894 <137 (P. A. Dubovsky) 20010501.917 <145 (M. Reszelski) 20010502.958 <145 (M. Reszelski) 20010504.916 148 (C. P. Jones) 20010505.876 <133 (J. Ripero) 20010506.910 146 (G. Poyner) 20010507.856 <145 (M. Reszelski) 20010507.903 142 (C. P. Jones) 20010507.903 <137 (E. Muyllaert) 20010507.915 147 (G. Poyner) 20010508.905 147 (C. P. Jones) 20010508.957 147 (M. Reszelski)