MASTER OT J034045.31+471632.2 likely superoutburst Known SU UMa star. YYYYMMDD(UT) mag observer 20230202.5421 <161c (Yutaka Maeda) 20230204.5175 <158c (Yutaka Maeda) 20230205.4875 <160c (Yutaka Maeda) 20230207.4999 <156c (Yutaka Maeda) 20230208.5181 <142c (Yutaka Maeda) 20230210.5418 <158c (Yutaka Maeda) 20230214.5328 152c (Yutaka Maeda) 20230214.5328 152c (Yutaka Maeda)