Occultation of 4UC 484-022053 by (20679) 1999 VU9 on 2017-10-17 Red O-: Stefano Sposetti Optics: M420 | Method: VID | Duration: 9.02,46.23,0 Red O-: David Vizzoni Optics: M200 | Method: CCD | Duration: 10.27,43.95,0 Red O-: E. Frappa/A. Klotz Optics: M250 | Method: CCD | Duration: 6.92,43.75,0