Occultation of 4UC 501-056052 by (747) Winchester on 2021-12-13 Green O+: Peter Nosal Optics: M250 | Method: CCD | Duration: 12.19 19.30,48.56,0 Red O-: Daniel Blazewicz Optics: M350 | Method: CCD | Duration: 20.32,49.99,0