physical libration

Related Overviews


'physical libration' can also refer to...


More Like This

Show all results sharing this subject:

  • Astronomy and Astrophysics


Show Summary Details

Quick Reference

A real periodic variation in the rotation rate of a celestial object, as distinct from an optical libration. In addition to its familiar optical librations, the Moon also possesses a very small physical libration in its axial rotation, amounting to less than 2′. This small physical libration allows the moments of inertia of the Moon to be found.

Subjects: Astronomy and Astrophysics.

Reference entries

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content. subscribe or login to access all content.