Orbit Phase

Author: Tianjiang Shuo

Website: https://cislunarspace.cn

Definition

A parameter ranging from 0 to 1 that describes a spacecraft's position along a periodic orbit, where 0 and 1 correspond to the same state. Given the Jacobi constant and orbit family, the orbit phase uniquely determines the state at the x-axis crossing point.

Application Value

Combined with transfer cost maps, orbit phase enables rapid evaluation of transfer costs and flight times at different orbital positions, supporting efficient trajectory screening during cislunar mission planning.

  • Minimum Parking Orbit, MPO
  • Super-Geostationary Transfer Orbit, sGTO
  • Halo Orbit Insertion, HOI
  • Low Lunar Orbit, LLO

References

  • Parker et al. (2010) Chaining periodic three-body orbits in the Earth-Moon system.
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Contributors: ouyangjiahong, Ou Yang Jiahong