Distance measure
type: Concept
narrower: Astronomical unit

Astronomical unit
type: Concept
contributor: AAS Frey.Katie Admin
modified: 2020-11-05T15:26:30.527Z
modified: 2020-11-24T17:15:52.384Z
alternative label: au
alternative label: AU
broader: Distance measure
definition: A unit of length equal to 149,597,870,700 m exactly, with symbol 'au' (re-definition at the International Astronomical Union's 28th General Assembly in Beijing, China, August 20-31). The astronomical unit equals 1.5813 x 10^-5 light-years and 4.8481 x 10^-6 parsecs.