Occultation of UCAC4 685-050812 by (1838) Ursa on 2025-01-17 Green O+: Jordi Marco Optics: M235 | Method: CCD | Duration: 2.86 2.16,41.40,0 Green O+: Javier De Elías Optics: M203 | Method: VID | Duration: 2.74 -3.88,40.46,0