Occultation of UCAC4 447-001123 by (522) Helga on 2026-10-28 Green O+: Olivier Dechambre Optics: M300 | Method: CCD | Duration: 6.50 2.01,48.76,0 Red O-: Arnaud Leroy Optics: M300 | Method: VID | Duration: 2.71,48.90,0