Rod Stubbings has detected an outburst of the SU UMa-type dwarf nova RU Hor. The last reported outburst was in 2009 March. YYYYMMDD(UT) mag observer 20091129.2205 <14.50:V (ASAS (Pojmanski, G. 2002, Acta Astron. 52,397)) 20091202.1882 <14.50:V (ASAS (Pojmanski, G. 2002, Acta Astron. 52,397)) 20091221.562 134 (Rod Stubbings)