Graphic showing Sun-Earth Lagrange points and orbits of Euclid, JWST and Gaia around L2.

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1. AkaSci 🛰️ (akasci@fosstodon.org)'s status on Tuesday, 07-Nov-2023 13:41:32 UTC AkaSci 🛰️

   in reply to

   Launched on July 1, the Euclid space telescope is operating in a Lissajous/halo orbit around the Sun-Earth L2 Lagrange point.

   Other space telescopes in orbit around L2 include Gaia and JWST.

   Unlike a Halo orbit, a Lissajous orbit precesses after each revolution. Both orbits are unstable and require periodic (~monthly) thruster firings for station-keeping.

   https://www.researchgate.net/publication/361812339_The_Euclid_Wide_Survey
   #ESAEuclid #Euclid
   4/n