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We study the orbits and manifolds near the equilibrium points of a rotating asteroid. The linearised equations of motion relative to the equilibrium points in the gravitational field of a rotating asteroid, the characteristic equation and…

Earth and Planetary Astrophysics · Physics 2014-03-11 Yu Jiang , Hexi Baoyin , Junfeng Li , Hengnian Li

The equilibrium points of the gravitational potential field of minor celestial bodies, including asteroids, comets, and irregular satellites of planets, are studied. In order to understand better the orbital dynamics of massless particles…

Earth and Planetary Astrophysics · Physics 2015-03-18 Xianyu Wang , Yu Jiang , Shengping Gong

In this study, equilibrium points and periodic orbits in the potential field of asteroids are investigated. We present the linearized equations of motion relative to the equilibrium points and characteristic equations. We find that the…

Earth and Planetary Astrophysics · Physics 2015-03-17 Yu Jiang

The stability and topological structure of equilibrium points in the potential field of the asteroid 101955 Bennu have been investigated with a variable density and rotation period. A dimensionless quantity is introduced for the…

Earth and Planetary Astrophysics · Physics 2017-04-14 Xianyu Wang , Junfeng Li , Shengping Gong

In this article, equilibrium points and families of periodic orbits in the vicinity of the collinear equilibrium points of a binary asteroid system are investigated with respect to the angular velocity of the secondary body, the mass ratio…

Earth and Planetary Astrophysics · Physics 2023-07-26 L. B. T. Santos , Allan Kardec de Almeida , P. A. Sousa-Silva , M. O. Terra , D. M. Sanchez , S. Aljbaae , A. F. B. A. Prado , F Monteiro

The orbital dynamics of a spacecraft orbiting around irregular small celestial bodies is a challenging problem. Difficulties to model the gravity field of these bodies arise from the poor knowledge of the exact shape as observed from the…

Earth and Planetary Astrophysics · Physics 2023-07-26 L. B. T. Santos , L. O. Marchi , P. A. Sousa-Silva , D. M. Sanchez , S. Aljbaae , A. F. B. A. Prado

The order and chaos of the motion near equilibrium points in the potential of a rotating highly irregular-shaped celestial body are investigated from point of view of the dynamical system theory. The positions of the non-degenerate…

Earth and Planetary Astrophysics · Physics 2015-08-10 Yu Jiang , Hexi Baoyin , Xianyu Wang , Yang Yu , Hengnian Li , Chao Peng , Zhibin Zhang

In this work, we investigate the bifurcations of relative equilibria in the gravitational potential of asteroids. A theorem concerning a conserved quantity, which is about the eigenvalues and number of relative equilibria, is presented and…

Earth and Planetary Astrophysics · Physics 2015-07-29 Yu Jiang , Hexi Baoyin , Hengnian Li

We investigate the orbital stability close to the unique L4-point Jupiter binary Trojan asteroid 624 Hektor. The gravitational potential of 624 Hektor is calculated using the polyhedron model with observational data of 2038 faces and 1021…

Earth and Planetary Astrophysics · Physics 2018-03-20 Yu Jiang , Hexi Baoyin , Hengnian Li

We studied the dynamical environment in the vicinity of the primary of the binary asteroid. The gravitational field of the primary is calculated by the polyhedron model with observational data of the irregular shape. The equilibrium points,…

Earth and Planetary Astrophysics · Physics 2018-05-29 Yu Jiang

In this work, we study the continuation of a periodic orbit on a relatively large scale and discover the existence of convergence under certain conditions, which has profound significance in research on asteroids and can provide a total…

Earth and Planetary Astrophysics · Physics 2020-10-26 Haokun Kang , Yu Jiang , Hengnian Li

We present a detailed analysis of the orbital stability of the HD 181433 planetary system, finding it to exhibit strong dynamical instability across a wide range of orbital eccentricities, semi-major axes, and mutual inclinations. We also…

The aim of this work is to verify the stability of the proposed orbital solutions for the third moonlet (Delta) taking into account a realistic gravitational potential for the central body of the quadruple system (Alpha). We also aim to…

Earth and Planetary Astrophysics · Physics 2023-05-10 Giulia Valvano , Rai Machado Oliveira , Othon Cabo Winter , Rafael Sfair , Gabriel Borderes-Motta

It is well accepted that knowing the composition and the orbital evolution of asteroids may help us to understand the process of formation of the Solar System. It is also known that asteroids can represent a threat to our planet. Such…

Earth and Planetary Astrophysics · Physics 2017-11-20 R. A. N. Araujo , R. V. Moraes , A. F. B. A. Prado , O. C. Winter

This study presents a study of equilibrium points, periodic orbits, stabilities, and manifolds in a rotating plane symmetric potential field. It has been found that the dynamical behaviour near equilibrium points is completely determined by…

Earth and Planetary Astrophysics · Physics 2018-07-02 Yu Jiang , Hexi Baoyin , Xianyu Wang , Hengnian Li

We are interested in stable periodic orbits for spacecrafts in the gravitational field of minor celestial bodies. The stable periodic orbits around minor celestial bodies are useful not only for the mission design of the deep space…

Earth and Planetary Astrophysics · Physics 2018-05-29 Yu Jiang , Juergen Schmidt , Hengnian Li , Xiaodong Liu , Yue Yang

Cybele asteroids constitute an appealing reservoir of primitive material genetically linked to the outer Solar System, and the physical properties of the largest members can be readily accessed by large telescopes. We took advantage of the…

This manuscript considers the main features of the nonlinear dynamics of multiple irregular celestial body systems. The gravitational potential, static electric potential, and magnetic potential are considered. Based on the three…

Earth and Planetary Astrophysics · Physics 2016-08-19 Yu Jiang , Yun Zhang , Hexi Baoyin , Junfeng Li

We investigate the problem of determining the shape of a rotating celestial object - e.g., a comet or an asteroid - under its own gravitational field. More specifically, we consider an object symmetric with respect to one axis - such as a…

Earth and Planetary Astrophysics · Physics 2021-03-24 Wai-Ting Lam , Marian Gidea , Fredy R Zypman

We study the motion and equilibria of the grains on the surface of the irregular celestial body (hereafter called irregular bodies). Motions for the grains on the smooth and unsmooth surfaces are discussed, respectively. The linearized…

Earth and Planetary Astrophysics · Physics 2016-05-23 Yu Jiang , Yun Zhang , Hexi Baoyin
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