SP-345 Evolution of the Solar System

FIGURE 8.5.2.- Projection of I685 Toro on the ecliptic plane in a coordinate system rotating with the Earth.

 

FIGURE 8.5.2.- Projection of I685 Toro on the ecliptic plane in a coordinate system rotating with the Earth. Between 1600 AD and 1800 AD, the Earth-Sun Iine librates in the b'a'c' domain about the equilibrium position a'. The libration makes the transit to the bac domain around 1850 AD and remains there until 2200 AD. After 2200 AD the Earth-Sun equilibrium position will shift back from a to a'. The orbital pattern of Toro librates relative to the Earth, but for the sake of clarity the Earth is depicted as librating in relation to the orbital pattern of Toro. (From Ip and Mehra, 1973.)
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