Occultation of 4UC 602-017692 by (162) Laurentia on 2021-12-28 Green O+: Stefano Sposetti Optics: M420 | Method: CCD | Duration: 3.78 9.02,46.23,0 Green O+: Andrea Manna Optics: M200 | Method: VID | Duration: 4.56 8.92,46.18,0 Green O+: Alberto Ossola Optics: M230 | Method: VID | Duration: 9.28 8.92,46.00,0