Occultation of 4UC 502-011847 by (1723) Klemola on 2019-01-17 Green O+: Jan-Maarten Winkel Optics: M310 | Method: VID | Duration: 5.13 6.26,51.90,0 Red O-: Henk De Groot Optics: M356 | Method: VID | Duration: 5.80,51.83,0