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2013MNRAS.434L..21M - Mon. Not. R. Astron. Soc., 434, L21-L25 (2013/September-1)
Why is the Moon synchronously rotating ?
MAKAROV V.V.
Abstract (from CDS):
If the Moon's spin evolved from faster prograde rates, it could have been captured into a higher spin-orbit resonance than the current 1:1 resonance. At the current value of orbital eccentricity, the probability of capture into the 3:2 resonance is as high as 0.6, but it strongly depends on the temperature and average viscosity of the Moon's interior. A warmer, less viscous Moon on a higher eccentricity orbit is even more easily captured into supersynchronous resonances. We discuss two likely scenarios for the present spin-orbit state: a cold Moon on a low-eccentricity orbit and a retrograde initial rotation.
Abstract Copyright: Published by Oxford University Press on behalf of the Royal Astronomical Society 2013. This work is written by a US Government employee and is in the public domain in the US. (2013)
Journal keyword(s): Moon - planets and satellites: dynamical evolution and stability
Simbad objects: 1
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