Occultation of 4UC 380-117454 by (18054) 1999 SW7 on 2021-07-28 Green O+: Jiri Kubanek Optics: M303 | Method: CCD | Duration: 2.11 13.75,49.74,0 Red O-: Carles Schnabel Optics: M400 | Method: VID | Duration: 1.87,41.49,0