Libration (Noun)
Meaning
(astronomy) a real or apparent slow oscillation of a moon or satellite; "the libration of the moon".
Classification
Nouns denoting natural processes.
Examples
- The Moon's elliptical orbit and the tilt of its orbit result in libration in longitude, causing its apparent size in the sky to change.
- Earth's tides are one cause of libration, producing tiny effects on the orbit of the Moon that help scientists make accurate calculations.
- Over a month's time, a close observation of the lunar surface from Earth can detect libration of the Moon.
- Using careful observation of libration in our solar system can be beneficial in establishing orbit trajectories and timelines.
- It takes practice for an astronomer to determine when and where the optimal times will be to capture detailed photos due to libration.