Keywords: Lunation animation November 2009.gif s own http //en wikipedia org/wiki/Image FullSkyAstronomySoftwareLogo png 2009-12-1 published on Commons Tomruen File Lunar libration with phase Oct 2007 gif similar Image Lunation animation April 2007 gif April 2007 animation 60 frames no phase shown <br> Image Lunar libration with phase2 gif Nov 2005 animation Technical Book Astronomical Formulae for Calculators 4th edition Jean Meeus 1988 published by Willmann-Bell Inc Chapter 30 Position of the Moon Source bitmap for projection from NRL's Clementine Spacecraft http //astrogeology usgs gov/Projects/Clementine/images/albedo simp750 jpeg USGS Global simple cylindrical projection at 10 km/pixel Animation 60 frames 12 hour step Period used 29 5 days Animation began and ended near Apogee to minimize jumping when cycles back to the start New moon given an unreal 1 intensity Ambient light to show motion in all phases View assumed from the center of the earth Geometrically impossible but best demonstration of monthly libration caused by moon's motion versus the shorter daily libration that would be included from the surface of the earth Moon animations Animated GIF Animations on black background Libration |