Occultation of 4UC 447-005458 by (1796) Riga on 2019-02-27 Green O+: Jan-Maarten Winkel Optics: M310 | Method: VID | Duration: 3.65 6.26,51.90,0 Red O-: Simon Kidd Optics: M350 | Method: CCD | Duration: -0.06,51.95,0 Red O-: John Talbot Optics: M303 | Method: VID | Duration: -1.28,51.63,0 Red O-: Peter Tickner Optics: M356 | Method: CCD | Duration: -0.92,51.43,0