How many astronomical unit in 1 light-hour? The answer is 7.21435969476. We assume you are converting between astronomical unit and light hour. You can view more details on each measurement unit: astronomical unit or light-hour The SI base unit for length is the metre. 1 metre is equal to 6.6845871222684E-12 astronomical unit, or 9.2656693110598E-13 light-hour. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between astronomical units and light hours. Type in your own numbers in the form to convert the units!
1 astronomical unit to light-hour = 0.13861 light-hour
5 astronomical unit to light-hour = 0.69306 light-hour
10 astronomical unit to light-hour = 1.38612 light-hour
20 astronomical unit to light-hour = 2.77225 light-hour
30 astronomical unit to light-hour = 4.15837 light-hour
40 astronomical unit to light-hour = 5.5445 light-hour
50 astronomical unit to light-hour = 6.93062 light-hour
75 astronomical unit to light-hour = 10.39593 light-hour
100 astronomical unit to light-hour = 13.86124 light-hour
You can do the reverse unit conversion from light-hour to astronomical unit, 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".
A light-hour (also written light hour) is a unit of length. It is the distance travelled by light in vacuum in one hour. Based on the current definition of the metre a light-hour is equal to 1,079,252,848,800 metres (~1.08 Tm).
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