Meaning of halo orbit | Babel Free

Definitions

A periodic, three-dimensional orbit about any one of the Lagrange points L₁, L₂ or L₃ of a two-body gravitational system.

Equivalents

Examples

“Due to the strong hyperbolic character of the halo orbits, the stable manifold approaches the halo orbit in a very fast way. This fact means that if we are able to put⟳ the satellite in the stable manifold of a halo orbit, it will be close⟳ to the halo orbit (say⟳ at [a] few km) in a reasonable period of time.”

“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, Tsinghua University Press⟳, Springer, Lecture⟳ Notes in Electrical Engineering 187, page 395, If the ratio of the amplitude in x-direction to γ₁ 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.”

“Thus, the minimum possible size for halo orbits in the Sun-Earth system is approximately (240 x 660) 10³ km at L₁ and (250 x 675) 10³ km at L₂, sizes denoting the maximum excursion from the libration point⟳ in the x and y directions respectively.”

CEFR level