How many light-hour in 1 astronomical units? The answer is 0.13861243995449. We assume you are converting between light hour and astronomical unit. You can view more details on each measurement unit: light-hour or astronomical units The SI base unit for length is the metre. 1 metre is equal to 9.2656693110598E-13 light-hour, or 6.6845871222684E-12 astronomical units. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between light hours and astronomical units. Type in your own numbers in the form to convert the units!
1 light-hour to astronomical units = 7.21436 astronomical units
5 light-hour to astronomical units = 36.0718 astronomical units
10 light-hour to astronomical units = 72.1436 astronomical units
15 light-hour to astronomical units = 108.2154 astronomical units
20 light-hour to astronomical units = 144.28719 astronomical units
25 light-hour to astronomical units = 180.35899 astronomical units
30 light-hour to astronomical units = 216.43079 astronomical units
40 light-hour to astronomical units = 288.57439 astronomical units
50 light-hour to astronomical units = 360.71798 astronomical units
You can do the reverse unit conversion from astronomical units to light-hour, or enter any two units below:
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).
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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