ASASSN-15mt superoutburst The 2015 superoutburst was relatively well observed in the middle to later parts. YYYYMMDD(UT) mag observer 20181113.437 <163c (Mitsutaka Hiraga) 20181115.3981 138cG (Makoto Watanabe) 20181116.3790 136cG (Makoto Watanabe) 20181117.4170 138cG (Yutaka Maeda) 20181117.422 135c (Mitsutaka Hiraga)