ASASSN-21mm outburst Relatively rare outburst. Subtype unknown. YYYYMMDD(UT) mag observer 20220611.3567 16.214zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20220613.3152 16.233zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20220613.3769 16.187zg (Zwicky Transient Facility Lasair (Masci+ 2019))