Extension of Stable Terminator orbit around small bodies

Yusuke Oki, Yuichi Tsuda, Jun'ichiro Kawaguchi

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

Abstract

In the exploration mission of small bodies orbiting operation is very significant in terms of fuel saving and scientific observation of small bodies. Although the force field around a small body is strongly perturbed, there is a family of stable orbits which is called "Terminator Orbit". While the terminator orbit is stable, it also has disadvantages. The terminator orbit's orbital plane must always face the sun and lack flexibility in orbit design. Moreover, since the orbital plane lies in night side, optical observation of the small body is extremely restricted. Therefore, this study extends the terminator orbit concept to a group of stable orbits which includes the terminator orbit and does not suffer from impact with surface or escaping. This extended terminator is called "Quasi-Stable Terminator Orbit (QSTO)" in this study. This work aims to reveal the solution space and the usability of QSTO. Thus, we succeeded in analytically deriving the existence range of the long-term QSTO and verified that numerical and analytical solutions coincide well. As a result, the calculation time required for solving the existence range of the long-term stable QSTO can be greatly shortened, and it became possible to obtain the range when changing the strength of the small body's gravity and the SRP in accordance with various missions in a short time.

Original languageEnglish
Title of host publication68th International Astronautical Congress, IAC 2017
Subtitle of host publicationUnlocking Imagination, Fostering Innovation and Strengthening Security
PublisherInternational Astronautical Federation, IAF
Pages7543-7552
Number of pages10
ISBN (Print)9781510855373
Publication statusPublished - 2017
Externally publishedYes
Event68th International Astronautical Congress: Unlocking Imagination, Fostering Innovation and Strengthening Security, IAC 2017 - Adelaide, Australia
Duration: 2017 Sep 252017 Sep 29

Publication series

NameProceedings of the International Astronautical Congress, IAC
Volume11
ISSN (Print)0074-1795

Other

Other68th International Astronautical Congress: Unlocking Imagination, Fostering Innovation and Strengthening Security, IAC 2017
Country/TerritoryAustralia
CityAdelaide
Period17/9/2517/9/29

Keywords

  • Lagrange planetary equation
  • Quasi-periodic orbit
  • Solar radiation pressure
  • Strong perturbation

ASJC Scopus subject areas

  • Aerospace Engineering
  • Astronomy and Astrophysics
  • Space and Planetary Science

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