HS Vir outburst Superoutburst? YYYYMMDD(UT) mag observer 20180126.7439 161c (Yutaka Maeda) 20180126.856 <150 (Hiroyuki Maehara) 20180130.6731 <143c (Yutaka Maeda) 20180201.7115 150c (Yutaka Maeda) 20180202.7278 <156c (Yutaka Maeda) 20180208.721 138 (Hiroyuki Maehara)