1RXP J113123+4322.5: new SU UMa-type dwarf nova! Dear Colleagues, The Kyoto team (R. Ishioka and M. Uemura) observed this outburst last night. The data very clearly show the presence of 0.3 mag superhumps! The star is thus confirmed to be an SU UMa-type dwarf nova. Given the red color of the suggested quiescent object, it is most likely that the "red" object is a chance coincidence of a field star. Further information will be provided by Uemura-san and Ishioka-san. More observations are most urgently requested!! Regards, Taichi Kato VSNET Collaboration team