XZ Eri outburst UGSU+E. YYYYMMDD(UT) mag observer 20201113.628 <148 (Hiroyuki Maehara) 20201123.3736 19.978zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20201202.3072 15.610zg (Zwicky Transient Facility Lasair (Masci+ 2019))