Occultation of UCAC4 690-023246 by (138691) 2000 SP57 on 2023-12-11 Green O+: Manfred Simon Optics: M200 | Method: VID | Duration: 0.52 10.63,47.90,0 Green O+: Deborah Smith Optics: M200 | Method: CCD | Duration: 0.50 -3.04,37.49,0 Red O-: Michal Rottenborn Optics: M254 | Method: VID | Duration: 13.33,49.71,0