SDSSJ100515.39+191108.0 superoutburst YYYYMMDD(UT) mag observer 20230320.1142 <187C (Masao Funada) 20230321.953 <17.30C (Gary Poyner) 20230321.9542 <185C (Masao Funada) 20230326.6222 <149c (Yutaka Maeda) 20230327.6384 125cG (Yutaka Maeda)