RU Peg in outburst?
RU Peg,2456204.78417,11.807,0.098,V,NO,ABS,ENSEMBLE,na,135,13.338,1.6089,na,7956BVA,B
That seems up about 1 mag in less than 24 hours.
Jim Roe [ROE]
Links:
[1] http://www.aavso.org/forums/variable-star-observing/campaigns-observation-reports