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File:Lunar libration with phase Oct 2007 (continuous loop).gif

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Original file (640 × 642 pixels, file size: 9.64 MB, MIME type: image/gif, looped, 56 frames, 5.6 s)

Description
English: Lunar libration. see below for more descriptions
Français : Librations de la lune. Voir une description détaillée en dessous.
Русский: ru:Либрация Луны и смена её фаз. См. ниже более подробную информацию.
Date (UTC)
Source
Author Tomruen
Other versions

[edit]
Public domain This work has been released into the public domain by its author, Tomruen. This applies worldwide.

In some countries this may not be legally possible; if so:
Tomruen grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

{original upload log}

This image is a derivative work of the following images:

[:fr:Libration|[:fr:lune|lune]. description'

Русский: ru:Либрация Луны и смена её фаз. См. ниже более подробную информацию.

Uploaded with derivativeFX

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.)

This version of the animation has less frames compared to the original to make the loop continuous (jumpiness when restarting).

Captions

Moon libration See below for further descriptions.

Items portrayed in this file

depicts

media type

image/gif

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current17:59, 18 October 2020Thumbnail for version as of 17:59, 18 October 2020640 × 642 (9.64 MB)Jahobrthe limit is no longer at 12.2 MPixel. better version, but less frames compared to the original to keep the continuous loop
08:23, 7 November 2011Thumbnail for version as of 08:23, 7 November 2011450 × 451 (2.46 MB)TravürsaRemoved a few frames to decrease the jumpiness when restarting.
00:18, 30 April 2010Thumbnail for version as of 00:18, 30 April 2010450 × 451 (2.44 MB)Ilmari Karonen{{Information |Description={{en|Lunar libration. ''see below for more descriptions''}} {{fr|Librations de la lune. ''Voir une description détaillée en dessous''.}} |Source=*[[:File:Lunar_libratio

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