visitor: Guest USER Login
Login is only needed for editing content of the library. Close it




Search

Language
Search result
Concepts (0)
Documents (0)
Element of
Elements

AU

ID:15825
GUID:-
Type:UNIT
Version:17
Version date:2013-02-22
Status:DRAFT
Owner:IFD-Nederland

Names

en-INastronomical unit
en-INAU
nl-NLastronomische eenheid
nl-NLAU

Description

References

astronomical unit (AU) (informative)
1 AU = 1,4959787 x 10^11 m
[ISO 31-01:1992.1-03.B.b]


Astronomical unit
The astronomical unit (AU or au or a.u. or sometimes ua) is a unit of length based on the distance from the Earth to the Sun. The precise value of the AU is currently accepted as 149,597,870,691 +/- 30 metres (nearly 150 million kilometres or 93 million miles). The symbol ua is recommended by the Bureau International des Poids et Mesures but in anglophone countries the reverse - au - is more common. The International Astronomical Union recommends au and international standard ISO 31-1 uses AU. In general, capital letters are only used for the symbols of units which are named after individual scientists, while au or a.u. can also mean atomic unit or even arbitrary unit; however, the use of AU to refer to the astronomical unit is widespread.
[Wikipedia (En)]


Astronomische eenheid
De astronomische eenheid (AE, Engels: AU) is een afstandsmaat die vrijwel gelijk is aan de gemiddelde afstand tussen de aarde en de zon. Een astronomische eenheid is ongeveer gelijk aan 150 miljoen kilometer; de meest recente metingen geven als precieze waarde: 149.597.870.697 meter (+/- 1 meter) [Standish (2005); Pitjeva (2004)]. Deze maat wordt in de astronomie gebruikt om afstanden in de ruimte aan te duiden, waardoor deze worden vergeleken met de 'straal' van de baan van de aarde om de zon.
[Wikipedia (Nl)]


Astronomical unit
The mean distance from the Earth to the Sun (semi-major axis of Earth's orbit). Approximately 149,600,000 kilometres (symbol AU), used to measure distances in the solar system.
[Wiktionary (En)]