Halo orbit

English

Etymology

First used by NASA mission specialist Template:W in 1966 for calculated orbits around the Earth–Moon L₂ point which required the use of thrusters to be made periodic.

Noun

1. Template:Lb A periodic, three-dimensional orbit about any one of the Lagrange points L₁, L₂ or L₃ of a two-body gravitational system.
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   • 2013, Yuhui Zhao, Shoucun Hu, Xiyun Hou, Lin Liu, Chapter 39: On Nominal Formation Flying Orbit with a Small Solar System Body, Rongjun Shen, Weiping Qian (editors), Proceedings of the 26th Conference of Spacecraft TT&C Technology in China, Template:W, Springer, Lecture Notes in Electrical Engineering 187, page 395,

     If the ratio of the amplitude in x-direction to ${\gamma }_1$ keeps unchanged (=0.155), the periods of halo orbits are almost the same (about 190 days). As a result of the stability of CRTBP and the dynamics of halo orbit formation, nominal halo orbits do not exist if the ratio is too large or too small.

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Derived terms

• Template:L (= Template:L)

Translations

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See also

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Further reading

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