halo orbit

短语

词形变化

halo orbits 复数 halo orbits

释义与例句

n.
  1. 1.

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

    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.

词源

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

来源：wiktionary