ASASSN-17eq superoutburst YYYYMMDD(UT) mag observer 20190509.531 <160c (Mitsutaka Hiraga) 20190510.5521 137cG (Yutaka Maeda) 20190511.5334 138:c (Yutaka Maeda) 20190515.5294 140cG (Yutaka Maeda)