CH UMa brightening YYYYMMDD(UT) mag observer 20000925.033 148 (M. Reszelski) 20000925.050 150 (T. Kinnunen) 20000925.119 147: (G. Hanson) 20000926.080 <140 (T. Kinnunen) 20000926.121 <140 (G. Hanson) 20000927.192 <137 (E. Muyllaert) 20000927.789 <131 (M. Westlund) 20000928.153 146: (G. Hanson) 20000929.050 <140 (T. Kinnunen) 20000929.108 147: (G. Hanson) 20000930.080 <132 (P. A. Dubovsky) 20000930.783 <131 (M. Westlund) 20000930.919 <140 (M. Reszelski) 20001001.050 142 (T. Kinnunen) 20001001.851 141 (M. Reszelski) 20001002.040 142 (T. Kinnunen) 20001002.101 <140 (G. Hanson) 20001005.953 <137 (P. A. Dubovsky) 20001006.066 147 (G. Poyner) 20001006.094 <140 (G. Hanson) 20001006.181 <137 (E. Muyllaert) 20001007.019 137 (T. Kinnunen) 20001007.094 <140 (G. Hanson) 20001007.506 147 (G. Hanson)