Moon Libration Applet

Period of the libration
The figures are visualizing the geocentric optical libration of the Moon.
The red dot is located at 0° longitude and 0° latitude (selenographic).

September 2000

September 2003

September 2006

September 2009

September 2012

September 2006

Web Links

Animation: Lunar libration with phase

Apparent Disk of Solar System Object (NASA)

Inconstant Moon (J. Walker)

Libration of the Moon

Geocentric Ephemeris for the Moon

Moon Ephemeris

The fickleness of the Moon

Examples of Lunar Libration

Jean Meeus: Mathematical Astronomy Morsels
Chapter 6: The librations of the Moon.

© 2006 J. Giesen


Last modified: 2006, Aug 26