UV Per: precursor outburst? Worth observing to potentially record stage A superhumps. YYYYMMDD(UT) mag observer 20171217.576 <149 (Hiroyuki Maehara) 20171217.7854 <145 (Jose Ripero) 20171218.483 124 (Tsuneo Horie) 20171218.8333 119 (Jose Ripero) 20171219.600 129 (Hiroyuki Maehara) 20171219.898 12.95V (Robert J. Modic)