astronomical unit | |
---|---|
Unit seestem | Astronomical seestem o units (Acceptit for uise wi the SI) |
Unit o | length |
Seembol | au or ua |
Unit conversions | |
1 au or ua in ... | ... is equal tae ... |
km | ×106 149.6 |
mi | ×106 92.956 |
pc | ×10−6 4.8481 |
ly | ×10−6 15.813 |
An astronomical unit (abbreviatit as au; ither abbreviations that are sometimes uised include ㍳, a.u. an ua) is a unit o length nou defined as exactly 597870700 m (92,955,807.3 mi), 149 or roughly the average Yird–Sun distance.
The XXVIII General Assembly of International Astronomical Union recommends … that the unique symbol “au” be used for the astronomical unit.
The XXVIII General Assembly of International Astronomical Union recommends that the astronomical unit be re-defined to be a conventional unit of length equal to exactly 149 597 870 700 meters, in agreement with the value adopted in IAU 2009 Resolution B2