CH UMa outburst (fading) YYMMDD(UT) mag observer 980925.030 <137 (T. Kinnunen) 980926.117 <140 (G. Hanson) 980927.107 <140 (G. Hanson) 980929.416 147: (G. Hanson) 980929.910 <137 (T. Kinnunen) 980930.401 148: (G. Hanson) 980930.796 <143 (G. Poyner) 980930.912 <133 (M. Westlund) 981001.110 <137 (T. Kinnunen) 981001.449 147 (G. Hanson) 981002.910 <137 (T. Kinnunen) 981006.130 <132 (T. Kinnunen) 981007.088 <140 (G. Hanson) 981008.110 <137 (T. Kinnunen) 981009.101 <140 (G. Hanson) 981009.107 148 (G. Poyner) 981010.089 <140 (G. Hanson) 981011.483 <140 (G. Hanson) 981012.076 147 (G. Poyner) 981012.437 <140 (G. Hanson) 981013.851 <133 (M. Westlund) 981015.150 150 (T. Kinnunen) 981016.149 150 (T. Kinnunen) 981017.119 150 (T. Kinnunen) 981018.126 147 (G. Poyner) 981019.471 138 (G. Hanson) 981019.860 <135 (B. H. Granslo) 981019.899 <137 (T. Kinnunen) 981020.290 143 (R. J. Modic) 981020.510 142 (G. Hanson) 981021.730 145: (T. Kinnunen) 981022.691 <132 (T. Watanabe) 981023.425 143 (R. J. Modic) 981024.180 <137 (R. Fidrich) 981024.940 <127 (T. Kinnunen) 981025.341 136 (R. J. Modic) 981026.910 <132 (T. Kinnunen) 981027.376 139: (R. J. Modic) 981027.750 <127 (T. Kinnunen) 981029.356 143 (R. J. Modic) 981029.433 146 (G. Hanson) 981031.417 145: (R. J. Modic)