Occultation of HIP 23433 by (684) Hildburg on 2020-12-26 Green O+: Gianni Casalnuovo Optics: M355 | Method: CCD | Duration: 1.35 11.34,46.42,0 Red O-: Marek Harman Optics: M356 | Method: CCD | Duration: 19.15,48.72,0 Red O-: Stefano Sposetti Optics: M420 | Method: CCD | Duration: 9.02,46.23,0