Visual magnitude estimates by VSOLJ members object YYYYMMDD(UT) mag code CYGSS 20210421.724 103 Mhh.VSOLJ SERNY 20210421.691 150 Mhh.VSOLJ VIRHS 20210421.653 145 Mhh.VSOLJ Observer: Hiroyuki Maehara (Okayama, Japan) Instruments: 30cmL