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. 2021 Dec 1;126(12):e2021JE006875. doi: 10.1029/2021JE006875

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© 2021. The Authors.

This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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(a) Semi‐major axis $a$ and (b) inclination $i$ in simulations with constant ocean tide $k \sin χ$ values taken from present‐day conditions. Solutions that both omit (thick blue curves) and include (thin black curves) tidal and core‐mantle boundary (CMB) dissipation within the Moon are shown. (c) Lunar equatorial tilt $I$ , in the solution that includes tidal and CMB dissipation within the Moon.