Glossary term: 天文單位
Description: 天文單位（AU）是一個方便的距離單位，正好等於 149,597,870.7 千米（km）。大約是地球與太陽之間的平均距離，這也是以前對天文單位的定義。AU通常用於測量太陽系和其他行星或恆星系統中的距離。例如，海王星的軌道距離太陽約 30 AU。
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See this term in other languages
Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher The translation of this term and its definition is still awaiting approval
This is an automated transliteration of the simplified Chinese translation of this term
The OAE Multilingual Glossary is a project of the IAU Office of Astronomy for Education (OAE) in collaboration with the IAU Office of Astronomy Outreach (OAO). The terms and definitions were chosen, written and reviewed by a collective effort from the OAE, the OAE Centers and Nodes, the OAE National Astronomy Education Coordinators (NAECs) and other volunteers. You can find a full list of credits here. All glossary terms and their definitions are released under a Creative Commons CC BY-4.0 license and should be credited to "IAU OAE".
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In Other Languages
- 阿拉伯語: الوحدة الفلكية
- 德語: Astronomische Einheit
- 英語: Astronomical Unit
- 西班牙語: Unidad Astronómica
- 法語: Unité astronomique
- 印地語: खगोलीय इकाई (AU)
- 義大利語: Unità astronomica
- 日語: 天文単位 (external link)
- 韓語: 천문단위
- 馬拉提語: खगोलशास्त्रीय एकक
- 巴西葡萄牙語: Unidade astronômica
- 簡體中文: 天文单位
Related Diagrams
Astronomical Unit
Caption: An astronomical unit (AU) is a convenient unit of distance equal to exactly 149,597,870.7 kilometers (km). This is approximately the average distance between the Earth and the Sun, which was a previous definition of the AU. The AU is often used to measure distances in the Solar System and in other planetary or stellar systems.
Credit: Danielle Futselaar/IAU OAE
License: CC-BY-4.0 Creative Commons 姓名標示 4.0 國際 (CC BY 4.0) icons
