CCD magnitude estimates by VSOLJ members object YYYYMMDD(UT) mag code SN2017erp 20170628.590 143C Hyk.VSOLJ SN2017erp 20170706.544 144C Hyk.VSOLJ SN2017erp 20170707.551 143C Hyk.VSOLJ Observer: K. Hatayama (Niigata, Japan) Instruments: 25cmSCT + ST-9XE (unfiltered)