Visual magnitude estimates by VSOLJ members object YYYYMMDD(UT) mag code HS2331+3905 20070907.60019 8.71C Kis.VSOLJ HS2331+3905 20070908.61535 9.14C Kis.VSOLJ Observer: Seiichiro Kiyota (Ibaraki, Japan) Instruments: 20cmSCT + ST-9XE