Occultation of 4UC 507-003687 by (21370) 1997 TB28 on 2022-02-06 Green O+: William Stewart Optics: M279 | Method: VID | Duration: 1.60 -2.57,53.06,0 Red O-: Alex Pratt Optics: M279 | Method: VID | Duration: -1.61,53.84,0