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How many AU in 1 ri? The answer is 2.6252196698363E-8. We assume you are converting between astronomical unit and ri [Japan]. You can view more details on each measurement unit: AU or ri The SI base unit for length is the metre. 1 metre is equal to 6.6845871222684E-12 AU, or 0.00025462962962963 ri. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between astronomical units and ri [Japan]. Type in your own numbers in the form to convert the units!
1 AU to ri = 38092050.40972 ri
2 AU to ri = 76184100.81944 ri
3 AU to ri = 114276151.22917 ri
4 AU to ri = 152368201.63889 ri
5 AU to ri = 190460252.04861 ri
6 AU to ri = 228552302.45833 ri
7 AU to ri = 266644352.86806 ri
8 AU to ri = 304736403.27778 ri
9 AU to ri = 342828453.6875 ri
10 AU to ri = 380920504.09722 ri
You can do the reverse unit conversion from ri to AU, or enter any two units below:
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".
The Japanese ri is 12,960 shaku.
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