Occultation of 4UC 557-017695 by (275) Sapientia on 2021-04-11 Green O+: Jan Manek Optics: M205 | Method: CCD | Duration: 3.48 14.78,49.91,0 Red O-: Bjoern Kattentidt Optics: M279 | Method: VID | Duration: 12.22,48.99,0