File:Lunation animation November 2009.gif
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Lunation_animation_November_2009.gif (480 × 438 pixels, file size: 4.86 MB, MIME type: image/gif, looped, 59 frames, 3.0 s)
File information
Structured data
Captions
Summary
[edit]DescriptionLunation animation November 2009.gif | Lunar libration. see below for more descriptions |
Date | (published on Commons) |
Source | Own work [1] |
Author | Tomruen |
Other versions |
File:Lunar libration with phase Oct 2007.gif similar, Image:Lunation animation April 2007.gif (April 2007 animation, 60 frames, no phase shown) Image:Lunar libration with phase2.gif (Nov 2005 animation) |
This file was selected as the media of the day for 11 April 2015. It was captioned as follows: |
Licensing
[edit]Public domainPublic domainfalsefalse |
I, the copyright holder of this work, release this work into the public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law. |
Technical
[edit]- 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:
- 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.)
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 05:29, 2 December 2009 | 480 × 438 (4.86 MB) | Tomruen (talk | contribs) | {{Information |Description={{en|1=== {{int:filedesc}} == {{Information | Description = {{en|Lunar libration. ''see below for more descriptions''}} {{fr|Librations de la lune. ''Voir une descriptio |
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