Occultation of 4UC 565-011281 by (142) Polana on 2021-04-22 Green O+: Carles Schnabel Optics: M400 | Method: VID | Duration: 1.28 1.87,41.49,0 Green O+: Jordi Marco Optics: M235 | Method: CCD | Duration: 1.18 2.16,41.40,0