94 citations · 849 across the 42 of their papers we have counts for
35 papers · 1 filter
The START mission: Probing the 2029 Apophis Flyby via a Low-Cost Geocentric SmallSat
Yixuan Wu, Yunda Li, Bowen Zheng +24
The Student-led Threatening Asteroid Reconnaissance of Tsinghua (START) marks the inaugural mission of the Tianxing Program, a deep-space exploration initiative led by students at…
Observation Timelines for the Potential Lunar Impact of Asteroid 2024 YR4
Yifan He, Yixuan Wu, Yifei Jiao +4
The near-Earth asteroid 2024 YR4 -- a 60 m rocky object that was once considered a potential Earth impactor -- has since been ruled out for Earth but retained a 4.3% pr…
Probing the Moon from Future Asteroid Impacts: A Review
Yifei Jiao, Bin Cheng, Hexi Baoyin
The Earth--Moon system has been experiencing impacts from asteroids and comets for billions of years. The Moon, as an airless body, has preserved a distinct record of these events…
Asteroid Kamo`oalewa's journey from the lunar Giordano Bruno crater to Earth 1:1 resonance
Yifei Jiao, Bin Cheng, Yukun Huang +6
Among the nearly 30,000 known near-Earth asteroids (NEAs), only tens of them possess Earth co-orbital characteristics with semi-major axes 1 au. In particular, 469219 Kamo`oa…
Structural stability of China's asteroid mission target 2016 HO3 and its possible structure
Bin Cheng, Hexi Baoyin
Asteroid 2016 HO3, a small asteroid (<60 m) in super fast rotation state (~28 min), and is the target of China's Tianwen-2 asteroid sample-return mission. In this work, we investig…
The cumulation of debris clouds around a fast-rotating asteroid
Chenyang Huang, Yang Yu, Zhijun Song +3
The rotational mass loss has been realized to be a prevalent mechanism to produce low-speed debris near the asteroid, and the size composition of the asteroid's surface regolith ha…
The common trend of saltation particles on the surface of fast-rotating asteroids
Zhijun Song, Yang Yu, Bin Cheng +2
An asteroid spun up to its critical limit has unique surface mechanical properties that its gravity and the centrifugal force largely balance, creating a relaxation environment whe…
Sand Creep Motion in Slow Spin-up Experiment: An Analogue of Regolith Migration on Asteroids
Chenyang Huang, Yang Yu, Bin Cheng +3
We studied the creep motion of granular materials in a gradient potential field that is created using a slow spin-up experiment device. Natural sand confined in the acrylic box is…
Annihilation of Relative Equilibria in the Gravitational Field of Irregular-shaped Minor Celestial Bodies
Yu Jiang, Hexi Baoyin
The rotational speeds of irregular shaped minor celestial bodies can be changed by the YORP effect. This variation in speed can make the numbers, positions, stabilities, and topolo…
Dynamical Model of Binary Asteroid Systems Using Binary Octahedrons
Yu Jiang, Hexi Baoyin, Mo Yang
We used binary octahedrons to investigate the dynamical behaviors of binary asteroid systems. The mutual potential of the binary polyhedron method is derived from the fourth order…
Orbital Stability Close to Asteroid 624 Hektor using the Polyhedral Model
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 polyh…
Relative Effect of Inclinations for Moonlets in the Triple Asteroidal Systems
Yu Jiang, Hexi Baoyin, Yun Zhang
We present the analysis and computational results for the inclination relative effect of moonlets of triple asteroidal systems. Perturbations on moonlets due to the primarys non-sp…
Periodic Orbit Families in the Gravitational Field of Irregular-shaped Bodies
Yu Jiang, Hexi Baoyin
The discovery of binary and triple asteroids in addition to the execution of space missions to minor celestial bodies in the past several years have focused increasing attention on…
Dynamical Configurations of Celestial Systems Comprised of Multiple Irregular Bodies
Yu Jiang, Yun Zhang, Hexi Baoyin +1
This manuscript considers the main features of the nonlinear dynamics of multiple irregular celestial body systems. The gravitational potential, static electric potential, and magn…
Surface Motion Relative to the Irregular Celestial Bodies
Yu Jiang, Yun Zhang, Hexi Baoyin
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 unsmoo…
Multiple Bifurcations in the Periodic Orbit around Eros
Yanshuo Ni, Yu Jiang, Hexi Baoyin
We investigate the multiple bifurcations in periodic orbit families in the potential field of a highly irregular-shaped celestial body. Topological cases of periodic orbits and fou…
Capillary Action in a Crack on the Surface of Asteroids with an Application to 433 Eros
Yu Jiang, Hexi Baoyin
Some asteroids contain water ice, and a space mission landing on an asteroid may take liquid to the surface of the asteroid. Gas pressure is very weak on the surface of asteroids.…
Periodic Motion near the Surface of Asteroids
Yu Jiang, Hexi Baoyin, Hengnian Li
We are interested in the periodic motion and bifurcations near the surface of an asteroid. The gravity field of an irregular asteroid and the equation of motion of a particle near…
Collision and Annihilation of Relative Equilibrium Points Around Asteroids with a Changing Parameter
Yu Jiang, Hexi Baoyin, Hengnian Li
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 eige…
Orbital Mechanics near a Rotating Asteroid
Yu Jiang, Hexi Baoyin
This study investigates the different novel forms of the dynamical equations of a particle orbiting a rotating asteroid and the effective potential, the Jacobi integral, etc. on di…
Orbits and Manifolds near the Equilibrium Points around a Rotating Asteroid
Yu Jiang, Hexi Baoyin, Junfeng Li +1
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 fie…
Analysis of potential locations of asteroidal moonlets
Hexi Baoyin, Xiaodong Liu, Laurene Beauvalet
In this study, the potential locations of asteroidal small satellites (also called moonlets) with quasi-circular mutual orbit are analyzed. For the motion of the moonlets, only the…
Stability and Motion around Equilibrium Points in the Rotating Plane-Symmetric Potential Field
Yu Jiang, Hexi Baoyin, Xianyu Wang +1
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 b…
Hamiltonian Formulation and Perturbations for Dust Motion around Cometary Nuclei
Yu Jiang, Juergen Schmidt, Hexi Baoyin +2
In this paper we analyze the dynamical behavior of large dust grains in the vicinity of a cometary nucleus. To this end we consider the gravitational field of the irregularly shape…