The use of luni-solar gravity assists for asteroid retrieval

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper proposes the use of luni-solar gravity assists for asteroid retrieval. The joint lunar and solar gravity assist can be approximated by a sequence of Moon-Moon transfers, in which the solar perturbation is effective, and lunar swingbys. The trajectory design is to find a sequence that can reduce the v∞ of the asteroid with respect to the Moon to a low level, such that the asteroid can be inserted to a lunar orbit with little effort. In this way, the Earth is kept safe from the asteroid. To aid the trajectory design, a database of Sun-perturbed Moon-Moon transfers is used. However, it is burdensome to compute optimal heliocentric transfer trajectories and capture trajectories for every asteroid in the large near-Earth asteroid database. This paper presents analyses revealing the capture capacity of luni-solar gravity capture in terms of Jacobi constant, the magnitude and declination of the v∞ of the asteroid with respect to the Earth. With this information known, the asteroid candidates can be easily selected out. It is found that there are 13 asteroids that can be retrieved by a mission during the period from 2020 to 2030.

Original languageEnglish
Title of host publicationSpaceflight Mechanics 2017
EditorsJon A. Sims, Frederick A. Leve, Jay W. McMahon, Yanping Guo
PublisherUnivelt Inc.
Pages4043-4060
Number of pages18
ISBN (Print)9780877036371
Publication statusPublished - 2017
Externally publishedYes
Event27th AAS/AIAA Space Flight Mechanics Meeting, 2017 - San Antonio, United States
Duration: Feb 5 2017Feb 9 2017

Publication series

NameAdvances in the Astronautical Sciences
Volume160
ISSN (Print)0065-3438

Other

Other27th AAS/AIAA Space Flight Mechanics Meeting, 2017
Country/TerritoryUnited States
CitySan Antonio
Period2/5/172/9/17

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Space and Planetary Science

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