The use of luni-solar gravity assists for asteroid retrieval
The use of luni-solar gravity assists for asteroid retrieval
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.
4043-4060
Chen, Hongru
8286469d-afe1-46e5-b107-694017de4d97
2017
Chen, Hongru
8286469d-afe1-46e5-b107-694017de4d97
Chen, Hongru
(2017)
The use of luni-solar gravity assists for asteroid retrieval.
McMahon, Jay W., Guo, Yanping, Leve, Frederick A. and Sims, Jon A.
(eds.)
In Spaceflight Mechanics 2017.
vol. 160,
Univelt, Inc.
.
Record type:
Conference or Workshop Item
(Paper)
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.
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More information
Published date: 2017
Venue - Dates:
27th AAS/AIAA Space Flight Mechanics Meeting, 2017, , San Antonio, United States, 2017-02-05 - 2017-02-09
Identifiers
Local EPrints ID: 490997
URI: http://eprints.soton.ac.uk/id/eprint/490997
ISSN: 0065-3438
PURE UUID: 40ecbced-60d2-4aa1-9b2d-6f628a46ef1f
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Date deposited: 11 Jun 2024 16:33
Last modified: 12 Jun 2024 02:11
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Contributors
Author:
Hongru Chen
Editor:
Jay W. McMahon
Editor:
Yanping Guo
Editor:
Frederick A. Leve
Editor:
Jon A. Sims
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