PU Per outburst, recent data The object underwent a superoutburst in 2009 January. The present outburst may be a superoutburst. YYYYMMDD(UT) mag observer 20100828.794 <171C (Hiroyuki Maehara) 20100913.894 <147 (Pavol A. Dubovsky) 20100920.203 <17.80C (Gary Poyner) 20100921.178 15.19C (Gary Poyner)