HO Del rare outburst! M. Reszelski reports that the short-period SU UMa-type dwarf nova HO Del is undergoing a (rare) outburst. The last secure outburst detection reported to VSNET dates back to 1996 August. HO Del is of particular interest because of its short period (Psh=0.0607 d, Kato et al.), and unusual evolution of superhumps. Observers are strongly requested to make time-resolve photometry of HO Del, in order to follow the evolution of the outburst and superhumps (and possible early superhumps). [If there were not WZ Sge, the object would be the top priority target!] YYYYMMDD(UT) mag observer 20010818.944 <143 (P. A. Dubovsky) 20010822.616 <149C (M. Moriyama) 20010822.951 <155 (M. Reszelski) 20010824.934 <143 (P. A. Dubovsky) 20010825.921 <147 (M. Reszelski) 20010826.922 <155 (M. Reszelski) 20010826.965 <151 (G. Poyner) 20010827.972 139 (M. Reszelski) Regards, Taichi Kato VSNET Collaboration team