Occultation of 4UC 622-013441 by (250) Bettina on 2021-02-09 Green O+: Jorge Juan Optics: M406 | Method: VID | Duration: 11.12 1.77,41.54,0 Green O+: Carles Schnabel Optics: M400 | Method: VID | Duration: 10.90 1.87,41.49,0