CY UMa is undergoing a superoutburst: YYYYMMDD(UT) mag observer 20100116.762 <131 (Hiroyuki Maehara) 20100118.687 <146 (Yutaka Maeda) 20100129.797 <16.78V (Hiroshi Itoh) 20100206.931 123 (Gary Poyner) 20100209.942 128 (Gary Poyner)