Visual magnitude estimates by VSOLJ members object YYYYMMDD(UT) mag code 17P 20071204.547 33 Nyh.VSOLJ CETR 20071204.567 93 Nyh.VSOLJ CETomicron 20071204.551 83 Nyh.VSOLJ ORIalpha 20071204.547 11 Nyh.VSOLJ Observer: Hiroshi Nishiyama (Ibaraki, Japan) Instruments: N, 10cmB