File:Lunar_libration_with_phase_Oct_2007.gif
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Original file (640 × 642 pixels, file size: 9.64 MB, MIME type: image/gif, looped, 59 frames, 5.9 s)
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Summary
DescriptionLunar libration with phase Oct 2007.gif | |
Date | (published on Commons) |
Source | English Wikipedia, original upload 5 November 2007 by Tomruen [1] |
Author | Tomruen |
Other versions |
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Licensing
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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
- 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.)
Items portrayed in this file
depicts
5 November 2007
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 01:03, 6 November 2007 | 640 × 642 (9.64 MB) | Tomruen | == Summary == {{Information | Description = {{en|Lunar libration. ''see below for more descriptions''}} {{fr|Librations de la lune. ''Voir une description détaillée en dessous''.}} | Source = E |
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