MisV1446 further brightened (precursor + superoutburst) YYYYMMDD(UT) mag observer 20181020.7570 <161c (Yutaka Maeda) 20181021.7457 <138c (Yutaka Maeda) 20181023.7474 139c (Yutaka Maeda) 20181024.7517 140cG (Yutaka Maeda) 20181025.817 137 (Hiroyuki Maehara)