Libration point orbit
In orbital mechanics, a libration point orbit (LPO) is a quasiperiodic orbit around a Lagrange point. Libration is a form of orbital motion exhibited, for example, in the Earth–Moon system. Trojan bodies also exhibit libration dynamics.
Two varieties of libration point orbits amenable to Lyapunov stability[clarification needed] are halo orbits and Lissajous orbits[1]
The
Early simulations of the JWST obtained a high confidence in achieving a ten-year operational lifespan before station keeping becomes untenable.[3] However thanks to a highly accurate launch, it is now thought the telescope could keep its station for up to twenty or even twenty-five years. Some years of intermittent service after that might also be tenable, because of the slow drift rate out of, or from towards, the Lagrange point.
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