tóng-àn:Lunar libration with phase2.gif
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Lunar_libration_with_phase2.gif (356 × 334 像素,檔案佔量: 932 KB,MIME類型: image/gif, 循環, 50 畫格, 5.0 s)
這是對Wikimedia Commons引來的一份檔案。伊佇hia ê kì-su̍t-ia̍h頂面的資訊顯示對下底. |
Khài-iàu
Soat-bêngLunar libration with phase2.gif | |||
Ji̍t-kî | (published on Commons) | ||
Chhut-chhù | English Wikipedia, original upload 7 September 2005 by Tomruen [1] | ||
Chok-chiá | Tomruen | ||
其他版本 |
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Siū-khoân
Public domainPublic domainfalsefalse |
我,此作品的版權所有人,釋出此作品至公共領域。此授權條款在全世界均適用。 這可能在某些國家不合法,如果是的話: 我授予任何人有權利使用此作品於任何用途,除受法律約束外,不受任何限制。 |
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]
評價
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This image was selected as picture of the day on Wikimedia Commons for 9 August 2006. It was captioned as follows: English: Lunar libration Other languages:
閩南語 / Bân-lâm-gú: Ge̍h-niû tī-leh piàn-hòa ê kè-thêng tang-tiong, lán lâng só· koan-chhek tio̍h ê thian-bûn hiān-siōng. Cymraeg: Gweddau'r Lleuad. English: Lunar libration Español: Fases y libración de la Luna. Français : Les différentes phases de la Lune Gaeilge: Guagadh na Gealaí. Galego: Fases da lúa e oscilación lunar Magyar: A Hold librációja (ciklikus imbolygása) Norsk bokmål: Månens faser. Norsk nynorsk: Månefasane Polski: Animacja ukazująca Księżyc we wszystkich fazach. Português: Animação representando as fases da lua Slovenčina: Librácia Mesiaca Svenska: Månens librationer Türkçe: Ayın evreleri 日本語: 月の秤動 中文: 月相变化 العربية : الهلال لحظة تكوينه |
This image was selected as picture of the day on Vietnamese Wikipedia.
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根據最有價值圖像標準,這張圖像被評定为在Lunar phases範疇內最有價值的共享資源圖像。你可以在Commons:Valued image candidates/Lunar libration with phase2.gif参看它的提名。 |
在此檔案描寫的項目
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共享資源質素評價 繁體中文
維基共享資源最有價值圖像 中文 (已轉換拼寫)
維基共享資源特色圖片 中文 (已轉換拼寫)
16 9 2005
多媒體型式 繁體中文
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日期/ 時間 | 細張圖 | 寸尺 | 用者 | 註解 | |
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現在 | 2005年9月16日 (拜5) 21:38 | 356 × 334(932 KB) | Saperaud~commonswiki | == 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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