Occultation of 4UC 540-047357 by (2142) Landau on 2022-01-21 Green O+: Antoni Selva Optics: M500 | Method: VID | Duration: 1.84 2.09,41.55,0 Red O-: Carles Schnabel Optics: M400 | Method: CCD | Duration: 1.87,41.49,0