The SU UMa-type dwarf nova SDSS J225831.18-094931.7 is undergoing a relatively bright outburst. YYYYMMDD(UT) mag observer 20091004.1219 <14.50V (ASAS (Pojmanski, G. 2002, Acta Astron. 52,397)) 20091004.510 155C (Hiroyuki Maehara) 20091006.1484 12.965V (ASAS (Pojmanski, G. 2002, Acta Astron. 52,397))