The analytical and numerical approaches to the theory of the Moon’s librations: Modern analysis and results

Petrova, Natalia; Zagidullin, Arthur; Nefedyev, Yury; Kosulin, V.; Andreev, Alexey

doi:10.1016/j.asr.2017.08.014

Cited by 15 publications

(1 citation statement)

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“…Lunar rotation is linked to its interior structure. Deviation from uniform rotation motion will result in torque, forcing lunar physical librations because of the spin-orbit synchronism (Petrova et al 2017;Yang et al 2017;Rambaux & Williams 2011). For that reason, understanding the rotation of the Moon and elements influencing these processes is crucial for studying the lunar internal structure and its composition (Wieczorek 2006;Williams et al 2001).…”

Section: Discussionmentioning

confidence: 99%

Influence of the layered Moon and Earth’s orientation on lunar rotation

Yang

Ping

Yan

et al. 2020

Res. Astron. Astrophys.

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One of the most efficient ways to probe the lunar inner structure at present is through the study of its rotation. Range and range rate (Doppler) data between the Chang’E-3 lander and station on the Earth were collected from the beginning of the Chang’E-3 lunar mission in 2013. These observation data, taken together with the existing lunar laser ranging data, provide a new approach to extend research on the Earth-Moon system. The high precision of current observation data imposes exacting demands, making it necessary to include previously neglected factors. In this paper, motivated by progress of the Chinese lunar exploration project and to use its data in the near future, two lunar models: a one-layer model and a two-layer model with a fluid core, were applied to the rotational equations based on our implemented algorithm of the Moon’s motion. There was a difference of about 0.5″ in ϕ and ψ, but 0.2″ in θ between the two models. This result confirms that stratification of the inner structure of the Moon can be inferred from rotation data. We also added precise Earth rotation parameters in our model; the results show that this factor is negligible at present, due to the limited precision of the existing data. These results will help us understand the rotational process clearly and build a more realistic Earth-Moon model when we combine Lunar Laser Ranging data with high precision radio data to fit lunar motion in the near future.

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