Talaksan:Lunation animation November 2009.gif

Lunation_animation_November_2009.gif ((480 × 438 pixel, laki ng talaksan: 4.86 MB, uri ng MIME: image/gif), nasilo na, 59 na banhay, 3.0 segundo)

Buod

Paglalarawan Lunar libration. see below for more descriptions
Petsa (published on Commons)
Pinanggalingan Sariling gawa [1]
May-akda Tomruen
Iba pang mga bersyon 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)
Media of the day This file was selected as the media of the day for 11 April 2015. It was captioned as follows:
English: Lunar libration
Other languages
Čeština: Měsíční librace.
English: Lunar libration
Русский: Либрация Луны.
中文(简体):月球天平动

Paglilisensiya

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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.)

Captions

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1 Disyembre 2009

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