Mən, bu əsərin müəllif hüquqlarının sahibi kimi, əsəri ictimai mülkiyyətə verirəm. Bu icazə bütün dünyada qüvvədədir. In some countries this may not be legally possible; if so: Bunun qanunla mümkün olmadığı hallarda:
İstənilən şəxsə, istənilən məqsəd üçün, qanunlar tərəfindən qadağan edilməyincə, heç bir şərt qoymadan bu işdən istifadə haqqını bağışlayıram.
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
50 frames were created, equally spaced in time.
Period used: 27.21222 days (Draconic month of nodes)
Animation began and ended at 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.)
Astronomical events
Sept 1, 2:23 UT - Apogee - Moon farthest from earth's center [Cancer]
Sept 3, 1:48 UT - New Moon [Leo]
Sept 6, 10:53 UT - Descending Node - On ecliptic circle, heading north to south. [Virgo]
Sept 11, 11:40 UT - First Quarter - Rises around noon, and at zenith near sunset [Scorpio]
Sept 13, 6:21 UT - Southern Limit - At farthest ecliptic south of the moon's orbit. [Sagittarius]
Also near farthest south declination as well.
Sept 16, 13:54 UT - Perigee - Closest point on orbit to earth's center. [Aquarius]
Sept 18, 2:04 UT - Full Moon - A "large and southern" moon up all night! [Pisces]
Sept 18, 8:11 UT - Ascending Node - On ecliptic, heading south to north. [Pisces]
Sept 25, 6:44 UT - Third Quarter - Rises after midnight, near zenith around sunrise. [Gemini]
Sep 26, 5:17 UT - Northern Limit - At farthest ecliptic north point of the moon's orbit. [Gemini]
Also near farthest north declination as well.
Sep 28, 15:31 UT - Apogee - Farthest point on orbit from earth's center. [Cancer]
This formerly was a featured picture on the ingilis language Wikipedia (Featured pictures) and was considered one of the finest images. This is a featured picture on the fars language Wikipedia (نگارههای برگزیده) and is considered one of the finest images.
This image has been assessed under the valued image criteria and is considered the most valued image on Commons within the scope: Lunar phases. You can see its nomination here.
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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 Nasa's Clementine Spacecraft: * [http://astrogeology.u
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