Occultation of TYC 2431-01442-1 by (693) Zerbinetta on 2012-03-22 Red O-: E. Frappa/A. Klotz Optics: M250 | Method: CCD | Duration: 6.92,43.75,0 Red O-: Faustino Garcia Optics: M250 | Method: CCD | Duration: -6.39,43.47,0 Red O-: Jose Ripero Optics: M356 | Method: VIS | Duration: -3.58,40.64,0