Occultation of TYC 2275-00243-1 by (1246) Chaka on 2013-12-04 Red O-: Michel Boutet Optics: M300 | Method: VIS | Duration: 1.29,43.50,0 Red O-: Jacques Sanchez Optics: M250 | Method: VIS | Duration: 1.35,43.42,0 Red O-: C. Perello/A. Selva Optics: M500 | Method: VID | Duration: 2.09,41.55,0