How many millisiriometre in 1 astronomical unit? The answer is 0.0010000000046792. We assume you are converting between millisiriometre and astronomical unit. You can view more details on each measurement unit: millisiriometre or astronomical unit The SI base unit for length is the metre. 1 metre is equal to 6.684587153547E-15 millisiriometre, 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 millisiriometers and astronomical units. Type in your own numbers in the form to convert the units!
1 millisiriometre to astronomical unit = 1000 astronomical unit
2 millisiriometre to astronomical unit = 1999.99999 astronomical unit
3 millisiriometre to astronomical unit = 2999.99999 astronomical unit
4 millisiriometre to astronomical unit = 3999.99998 astronomical unit
5 millisiriometre to astronomical unit = 4999.99998 astronomical unit
6 millisiriometre to astronomical unit = 5999.99997 astronomical unit
7 millisiriometre to astronomical unit = 6999.99997 astronomical unit
8 millisiriometre to astronomical unit = 7999.99996 astronomical unit
9 millisiriometre to astronomical unit = 8999.99996 astronomical unit
10 millisiriometre to astronomical unit = 9999.99995 astronomical unit
You can do the reverse unit conversion from astronomical unit to millisiriometre, or enter any two units below:
The SI prefix "milli" represents a factor of 10-3, or in exponential notation, 1E-3.
So 1 millisiriometre = 10-3 siriometre.
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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