1866 Sisyphus 1972 XA 11 septiembre, 2017 aaznar Near-Earth Asteroids Lightcurves Number: 1866 Designation: 1972 XA Name: Sisyphus First Date: 2016/04/25 Points: 172 P1: 2.4024 P1 error: 0.00225 Max. Ampl.: 0.08