Occultation of 4UC 492-026334 by (1712) Angola on 2018-04-20 Green O+: R. Greimel/T. Ratzka Optics: M500 | Method: VID | Duration: 2.56 15.49,47.07,0 Red O-: Karel Halir Optics: M507 | Method: VID | Duration: 13.60,49.75,0