Analysis of the orbital stability close to the binary asteroid (90) Antiope
| Autor: | Hauke Hussmann, Antonio F. B. A. Prado, Safwan Aljbaae, Diogo M. Sanchez |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Physics
010504 meteorology & atmospheric sciences Solar Radiation Pressure Orbital stability Astronomy Binary number Antiope Astronomy and Astrophysics 01 natural sciences Asteroids Celestial mechanics Gravitation Space and Planetary Science Asteroid Physics::Space Physics 0103 physical sciences Astrophysics::Earth and Planetary Astrophysics Orbital Stability 010303 astronomy & astrophysics Solar system 0105 earth and related environmental sciences |
| Zdroj: | Monthly Notices of the Royal Astronomical Society. 496:1645-1654 |
| ISSN: | 1365-2966 0035-8711 |
| DOI: | 10.1093/mnras/staa1634 |
| Popis: | We provide a generalized discussion on the dynamics of a spacecraft around the equal-mass binary asteroid (90) Antiope, under the influence of solar radiation pressure at the perihelion and aphelion distances of the asteroid from the Sun. The polyhedral shape of the components of this asteroid is used to accurately model the gravitational field. Five unstable equilibrium points are determined and classified into two cases that allow classifying of the motion associated with the target as always unstable. The dynamical effects of the mass ratio of our binary system are investigated. We tested massless particles initially located at the periapsis distance on the equatorial plane of the primary of our binary asteroid. Bounded orbits around our system are not found for the longitudes λ ∈ {60, 90, 120, 240, 270, 300}. We also discuss the orbital dynamics in the full potential field of (90) Antiope. The tested motions are mainly dominated by the binary’s gravitational field; no significant effects of the SRP are detected. For λ = 180°, less perturbed orbits are identified between 420 and 700 km from the centre of the system, that corresponds to orbits with Δa < 30 km and Δe < 0.15. All the orbits with initial periapsis distance smaller than 350 km either collide with components of our asteroid or escape from the system. |
| Databáze: | OpenAIRE |
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