CCD magnitude estimates by VSOLJ members object YYYYMMDD(UT) mag code ASASSN-18abj 20181217.540 12.04V Ioh.VSOLJ ERIIM 20181217.476 11.92V Ioh.VSOLJ Observer: Hiroshi Itoh (Tokyo, Japan) Instruments: 12.7cmSCT + ATIK 414EX