How many stadion in 1 astronomical unit? The answer is 948623149.65124. We assume you are converting between stadion and astronomical unit. You can view more details on each measurement unit: stadion or astronomical unit The SI base unit for length is the metre. 1 metre is equal to 0.0063411540900444 stadion, or 6.6845871222684E-12 astronomical unit. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between stadia and astronomical units. Type in your own numbers in the form to convert the units!
You can do the reverse unit conversion from astronomical unit to stadion, or enter any two units below:
An empirical determination of the length of the stadion was made by Lev Vasilevich Firsov, who compared 81 distances given by Eratosthenes and Strabo with the straight-line distances measured by modern methods, and averaged the results. He obtained a result of about 157.7 metres (172.5 yd).
The astronomical unit (AU or au or a.u. or sometimes ua) is a unit of length defined to be exactly equal to 149,597,870,700 metres. Historically, the astronomical unit was conceived as the average Earth-Sun distance (the average of Earth's aphelion and perihelion), before its modern redefinition.
The symbol "ua" is recommended by the Bureau International des Poids et Mesures, but in the United States and other anglophone countries the reverse usage is more common. The International Astronomical Union recommends "au" and international standard ISO 31-1 uses "AU".
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