Occultation of 4UC 491-021484 by (3631) Sigyn on 2018-10-02 Red O-: Stefano Sposetti Optics: M280 | Method: VID | Duration: 9.02,46.23,0 Red O-: Andrea Manna Optics: M200 | Method: VID | Duration: 8.92,46.18,0 Red O-: Alberto Ossola Optics: M230 | Method: VID | Duration: 8.92,46.00,0