Occultation of 4UC 557-024653 by (4131) Stasik on 2021-03-25 Green O+: Roland Boninsegna Optics: M305 | Method: VID | Duration: 2.04 4.58,50.09,0 Red O-: Jan-Maarten Winkel Optics: M356 | Method: VID | Duration: 6.26,51.90,0