Fig. 2.
Representation of ℓ(α) orbits (gray lines) of the ER3BP in the rotating-pulsating reference frame with α = 3 × 10−2, 10−3, 10−4 AU for 1000 years. The values of 
in the three different cases are 10−3, 7 × 10−5, and 10−5 AU. The representation of ℓ(α) in the time-span of 1 year (black curves) emphasizes the small drifts of the librations along the Y axis. The red point indicates the position of L3.
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