MASTER OT J203824.15+174242.3 most likely superoutburst Type from ZTF data. Supercycle about 140 d. YYYYMMDD(UT) mag observer 20210901.2764 21.080zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210903.3009 16.345zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210903.3319 16.551zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210903.3320 16.551zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210905.2476 16.684zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210905.2478 16.684zr (Zwicky Transient Facility Lasair (Masci+ 2019))