Occultation of TYC 0239-01406-1 by (623) Chimaera on 2019-02-22 Green O+: Derek Robson Optics: L53 | Method: CCD | Duration: 1.40 -1.21,52.75,0 Green O+: Luke Broom-Lynne Optics: M200 | Method: VID | Duration: 3.60 1.02,52.45,0 Green O+: William Diffin Optics: L152 | Method: CCD | Duration: 3.35 -1.52,52.41,0