CCD magnitude estimates by VSOLJ members object YYYYMMDD(UT) mag code ASASSN-18do 20180301.520 16.07C Ioh.VSOLJ ASASSN-18do 20180302.579 16.04C Ioh.VSOLJ Observer: Hiroshi Itoh (Tokyo, Japan) Instruments: 30cmSCT + SBIG ST-9XE