Superoutburst of YZ Cnc The SU UMa-type dwarf nova YZ Cnc is undergoing a superoutburst as indicated by the following observations. YYMMDD(UT) mag observer 980420.422 149: (R. Stubbings) 980420.876 142 (G. Poyner) 980421.182 <149 (G. Hanson) 980422.872 147 (G. Comello) 980422.969 <142 (M. Biesmans) 980423.830 123 (J. Pietz) 980425.381 118 (R. Stubbings) 980425.867 110 (G. Poyner) 980426.062 111 (J. McKenna)