Possible anomalous superoutburst of T Leo The SU UMa-type dwarf nova T Leo may be undergoing a superoutburst, apparently preceded by the "second" precursor on Apr. 12. Another precursor-like, bright normal outburst was observed on Apr. 2-3. Follow-up observations, esp. time-resolved photometry, are strongly encouraged. YYMMDD(UT) mag observer 980411.648 <119 (T. Watanabe) 980411.894 <142 (G. Poyner) 980412.890 105 (J. Pietz) 980412.908 104 (P. Schmeer) 980414.151 114 (G. Hanson) 980414.562 108 (R. Stubbings) 980414.577 105 (P. Nelson) 980414.819 103 (J. Pietz) Regards, Taichi Kato