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

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
  • Lunar_libration_with_phase_Oct_2007.gif
Author Tomruen
Other versions

[edit]

  • all frames
  • continuous loop
  • ogv video
  • southern hemisphere
  • still Frame png
  • Frame 2007-10-11
  • Frame 2007-10-15
  • Frame 2007-10-19
  • Frame 2007-10-26
  • Frame 2007-10-26
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:

  • File:Lunar_libration_with_phase_Oct_2007.gif licensed with PD-self
    • 2007-11-06T01:03:49Z Tomruen 640x642 (10111965 Bytes) 'Summary == Information | Description = {en|[Moon|Lunar][en:libration..for more descriptions'

[: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:

  • USGS: Global simple cylindrical projection at 10 km/pixel. [1]
  • 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 liberation See below for further descriptions.

Items portrayed in this file

depicts

creator

some value

URL: https://commons.wikimedia.org/wiki/user:Tomruen
Wikimedia username: Tomruen
author name string: Tomruen

copyright status

copyrighted, dedicated to the public domain by copyright holder

copyright license

released into the public domain by the copyright holder

MIME 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 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 2011450 × 451 (2.46 MB)TravürsaRemoved a few frames to decrease the jumpiness when restarting.
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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