Fig. 9. Simulated orbit displacement along the line-of-sight from the Earth for the asteroid 1566 Icarus vs time between 1966 and 2018. Icarus is approximated with a spheroid with the oblateness parameter and the polar radius  meters. A constant surface albedo taken into account and the spin axis orientation from De Angelis (1995). The three close approaches to the Earth denoted by shaded strips.