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一种不规则小行星附近周期轨道全局搜索策略
Published 2023-07-01“…为提高加速度计算效率，提出一种不规则小行星引力加速度快速估计方法；在此基础上，通过参数空间内随机化粗略搜索获得周期轨道的初值猜想；利用遗传算法在初值猜想附近区间进行精细搜索，找到周期轨道的初值。通过对不规则小行星433 Eros附近周期轨道的搜索，对其附近不同形状的周期轨道进行了分类，分析周期轨道在小行星附近的分布规律。…”
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Periodic orbits related to the equilibrium points in the potential of Irregular-shaped minor celestial bodies
Published 2019-03-01“…We calculated orbit families emanating from the EPs of asteroids 433 Eros and 216 Kleopatra, including the Lyapunov orbit family, the Vertical orbit family, the orbit families bifurcating from the Vertical orbit family, as well as the nonplanar orbit family. …”
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Existence and Control of Special Orbits around Asteroid 4 Vesta
Published 2022-08-01“…Compared with Vesta, the control periods of the Sun-synchronous orbits of 21 Lutetia and 433 Eros are much longer. Second, Vesta’s orbits with a critical inclination depend on the semi-major axis and eccentricity. …”
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Convergence of a periodic orbit family close to asteroids during a continuation
Published 2020-12-01“…As an application of the results developed here, three asteroids, (216) Kleopatra, (22) Kalliope and (433) Eros, are studied, and several representative periodic orbit families are detected, with convergence in three different cases: bidirectional, increasing-directional and decreasing-directional continuation. …”
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Grain Size Effects on Visible and Near-infrared (0.35–2.5 μm) Laboratory Spectra of Ordinary Chondrite and HED Meteorites
Published 2023-01-01“…Often these calibrations are based on fine meteorite powders that are representative of regolith observed on large NEAs such as (433) Eros. However, spacecraft observations of smaller NEAs such as (25143) Itokawa, (101955) Bennu, and (162173) Ryugu show surfaces devoid of a thick layer of regolith and instead find variegated landscapes with millimeter-sized particles to meter-scale boulders. …”
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