CCD magnitude estimates by VSOLJ members object YYYYMMDD(UT) mag code ASASSN-18yi 20181115.444 17.65C Ioh.VSOLJ CNCEG 20181115.706 15.70V Ioh.VSOLJ ERIIM 20181115.533 11.75V Ioh.VSOLJ Observer: Hiroshi Itoh (Tokyo, Japan) Instruments: 12.7cmSCT + ATIK 414EX