Occultation of 4UC 436-057657 by (20547) 1999 RD105 on 2014-05-21 Red O-: C. Perello/A. Selva Optics: M500 | Method: VID | Duration: 2.09,41.55,0 Red O-: Carles Schnabel Optics: M400 | Method: VID | Duration: 1.87,41.49,0