94 citations · 849 across the 42 of their papers we have counts for
44 papers
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…
Pretrained Approximators for Low-Thrust Trajectory Cost and Reachability
Zhong Zhang, Giacomo Acciarini, Dario Izzo +2
Low-thrust trajectory design relies heavily on repeated evaluations of fuel consumption and transfer feasibility, which require expensive optimal control solutions. In this work, w…
Structured Scaling of AI Discovery Across Diverse Scientific Domains
Haotian Ye, Haowei Lin, Jingyi Tang +30
Scientific discovery often requires many cycles of proposing, testing, and refining candidate solutions. Language models can increasingly participate in these loops, but simply gen…
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…
Global Optimality in Multi-Flyby Asteroid Trajectory Optimization: Theory and Application Techniques
Zhong Zhang, Xiang Guo, Di Wu +3
Designing optimal trajectories for multi-flyby asteroid missions is scientifically critical but technically challenging due to nonlinear dynamics, intermediate constraints, and num…
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…
An Atlas of Optimal Low-Thrust Rephasing Solutions in Circular Orbit
Di Wu, Fanghua Jiang, Hexi Baoyin
In this paper, the time- and propellant-optimal low-thrust rephasing problems in circular orbit are studied to depict their solution spaces in an atlas. The number of key parameter…
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…
Autonomous Time-Optimal Many-Revolution Orbit Raising for Electric Propulsion GEO Satellites via Neural Networks
Haiyang Li, Francesco Topputo, Hexi Baoyin
Geostationary Earth orbit (GEO) satellites are of great significance in the space market. Low-thrust propulsion has been highly developed in the last decades because it is fuel-sav…
Deep Networks as Approximators of Optimal Transfers Solutions in Multitarget Missions
Haiyang Li, Shiyu Chen, Dario Izzo +1
In the design of multitarget interplanetary missions, there are always many options available, making it often impractical to optimize in detail each transfer trajectory in a preli…
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.…
Debris Engine: A Potential Thruster for Space Debris Removal
Lei Lan, Jingyang Li, Hexi Baoyin
We present a design concept for a space engine that can continuously remove the orbit debris by using the debris as a propellant. Space robotic cleaner is adopted to capture the ta…