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An astronomical unit is the average distance between the Earth and the Sun. Estimates of this distance have varied over time. It is now defined as exactly 149,597,870.7 kilometers. Miles. A mile is a unit of distance equal to 5,280 feet or exactly 1.609344 kilometers.
The astronomical unit (symbol: au, or AU) is a unit of length defined to be exactly equal to 149,597,870,700 m. Historically, the astronomical unit was conceived as the average Earth-Sun distance (the average of Earth's aphelion and perihelion), before its modern redefinition in 2012.
Astronomical unit, a unit of length effectively equal to the average, or mean, distance between Earth and the Sun, defined as 149,597,870.7 km (92,955,807.3 miles). The astronomical unit provides a convenient way to express and relate distances of objects in the solar system and to carry out astronomical calculations.
- The Editors of Encyclopaedia Britannica
May 16, 2024 · How to calculate astronomical units in kilometers, miles, and more units. We already know how to calculate from astronomical unit to meter, or at least; we know the conversion factor. To convert from astronomical units to meters, simply multiply the distance in au by the conversion factor.
Jul 31, 2022 · The precise distance of an astronomical unit is 92,955,807 miles (149,597,871 km). Earth’s orbit around the sun isn’t a perfect circle. So Earth’s distance from the sun changes throughout the...
May 18, 2020 · Astronomical units, abbreviated AU, are a useful unit of measure within our solar system. One AU is the distance from the Sun to Earth's orbit, which is about 93 million miles (150 million kilometers).
