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Also abbreviated AU. A unit of distance measurement equal to the semimajor axis of the Earth's elliptical orbit, equivalent to the average of the maximum and minimum distances between Earth and the Sun.{{Universe}}
 
Also abbreviated AU. A unit of distance measurement equal to the semimajor axis of the Earth's elliptical orbit, equivalent to the average of the maximum and minimum distances between Earth and the Sun.{{Universe}}
   
1 AU is equal to {{convert|92,956,000|m|km|abbr=on}}.
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{{convert|1|AU}}.
   
 
==References==
 
==References==
 
{{Reflist}}
 
{{Reflist}}
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==Further reading==
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<!--Cite templates used in further reading section because it more closely resembles format for reference lists used in most publications.-->
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*{{citation |last1=Williams |first1=D. |last2=Davies |first2=R. D. |date=1968 |title=A radio method for determining the astronomical unit |journal=[[Monthly Notices of the Royal Astronomical Society]] |volume=140 |issue=4 |page=537 |bibcode=1968MNRAS.140..537W |doi=10.1093/mnras/140.4.537}}
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==External links==
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*[http://www.iau.org/public_press/themes/measuring/ The IAU and astronomical units]
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*[http://www.iau.org/Units.234.0.html Recommendations concerning Units] (HTML version of the IAU Style Manual)
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*[http://www.sil.si.edu/exhibitions/chasing-venus/intro.htm Chasing Venus, Observing the Transits of Venus]
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*[http://www.transitofvenus.org/ Transit of Venus]
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{{Units of length used in Astronomy}}
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{{SI units}}
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{{DEFAULTSORT:Astronomical Unit}}
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[[Category:Celestial mechanics]]
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[[Category:Units of measurement in astronomy]]
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[[Category:Units of length]]
   
   
 
{{Project Astronomy}}
 
{{Project Astronomy}}
{{Project Mathematics}}
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{{Project Maths}}

Latest revision as of 20:08, August 20, 2015

Template:Infobox unit

Also abbreviated AU. A unit of distance measurement equal to the semimajor axis of the Earth's elliptical orbit, equivalent to the average of the maximum and minimum distances between Earth and the Sun.[1]

1 astronomical unit (150,000,000 km; 93,000,000 mi).

ReferencesEdit

  1. ^ Rees, Martin (ed.) (2008). Universe: The Definitive Visual Guide. Dorling Kindersley Inc. ISBN 9780756636708. 

Further readingEdit

External linksEdit

Template:Units of length used in Astronomy Template:SI units


4 Milky Way (ELitU)-blank This article is part of Project Astronomy, a All Birds project that aims to write comprehensive articles on each term related to astronomy.


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