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Glossarbegriffe: Astronomische Einheit

Description: Eine Astronomische Einheit (AE) ist eine Längeneinheit, die genau 149.597.870,7 Kilometer (km) entspricht. Eine AE ist in etwa der durchschnittlichen Entfernung zwischen Erde und Sonne - genau so war eine AE früher definiert. Als Längenmaß wird die AE häufig verwendet, um Entfernungen innerhalb unseres Sonnensystems oder in anderen Planeten- oder Sternsystemen anzugeben. Beispielsweise umrundet der Planet Neptun die Sonne in einer Entfernung von rund 30 AE.

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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

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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Concentric circles for the orbits of Mercury, Venus, Earth and Mars. The Earth to Sun distance is marked as IAU

Astronomical Unit

Bildunterschriften: 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.
Bildnachweis: Danielle Futselaar/IAU OAE

License: CC-BY-4.0 Creative Commons Namensnennung 4.0 International (CC BY 4.0) icons

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