CSS J215815.3+094709 very bright outburst update YYYYMMDD(UT) mag observer 20121115.917 17.45C (Eddy Muyllaert) 20121214.897 17.10:C (Eddy Muyllaert) 20121222.853 12.75:C (Eddy Muyllaert) 20121223.425 11.33CR (MASTER-Amur) 20121223.457 11.38CR (MASTER-Amur)