Description: Una unidad astronómica (UA) es una unidad de distancia equivalente a 149,597,870.7 kilómetros (km) exactos. Esta es la distancia media entre la Tierra y el Sol, que era una definición anterior de la UA. La UA se utiliza a menudo para medir distancias en el Sistema Solar y en otros sistemas planetarios o estelares. Por ejemplo, Neptuno orbita a unas 30 UA del Sol.

Related Terms:

• Light Year
• Parsec
• Semi-Major Axis

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

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