MASTER OT J051415.56+671120.3 rare outburst Known SU UMa star, but not well observed in the past. YYYYMMDD(UT) mag observer 20230130.5810 <164c (Yutaka Maeda) 20230202.5808 <155c (Yutaka Maeda) 20230204.572 <174C (Mitsutaka Hiraga) 20230205.5890 <155c (Yutaka Maeda) 20230207.567 <175C (Mitsutaka Hiraga) 20230208.5565 <143c (Yutaka Maeda) 20230210.5810 <161c (Yutaka Maeda) 20230214.5718 145c (Yutaka Maeda)