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Artist’s principle of Earth and also sun. One expensive unit = the average distance between them. Image via NASA.

You are watching: How many miles in an au

Astronomers like to list the ranges to objects within our solar device (planets, dwarf planets, asteroids, comets, spacecraft, etc.) in terms of an astronomical unit. How far is that? follow the links listed below to learn more about this basic distance unit in our solar system.

Definition of astronomical unit.

Mean distance from sunlight to each planet, in AU.

Mean distance from sunlight to some dwarf planets, in AU.

Mean distance to Kuiper Belt, the furthest spacecraft, Oort Cloud, in AU.

Amount of distance in a light-year, in AU

Definition the astronomical unit. For general reference, we deserve to say the one huge unit (AU) represents the median distance in between the Earth and our sun. An AU is approximately 93 million mile (150 million km). It’s roughly 8 light-minutes.

More exactly, one astronomical unit (AU) = 92,955,807 mile (149,597,871 km).

Earth’s orbit about the sunlight isn’t a perfect circle. Therefore Earth’s street from the sun transforms throughout the year. Astronomers offer the Earth’s an altering distance throughout the year relative to the huge unit, too. For instance, once the earth is at perihelion – the nearest suggest to the sunlight for the year, in January – it’s about 0.983 AU from the sun. As soon as our world swings out to aphelion – its farthest point, in July – we’re about 1.017 AU far from the sun.

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Distances from the sunlight of planets in our solar system, to express in A.U. Graph via planetsforkids.org

Mean distance (semi-major axis) from sunlight to every planet, in AU.

Mercury: 0.387 AUVenus: 0.723 AUEarth: 1.000 AUMars: 1.524 AUJupiter: 5.203 AUSaturn: 9.582 AUUranus: 19.201 AUNeptune: 30.047 AU

Source: Planetary reality Sheet

If you want to find out the distances of the solar system planets indigenous the Earth and sun right now, click here or here.

Artist’s ide of the dwarf planet Eris, whose street from the sunlight varies indigenous 38.255 to 97.661 au. Picture via HubbleSite

Mean street from sunlight to some dwarf planets, in AU.

Ceres: 2.767 AUPluto: 39.53 AUEris: 67.958 AUSedna: 518.57 AU

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Artist’s rendering of the Kuiper Belt and also the Oort Cloud, the remote icy realm of the solar system. Photo via NASA

Mean street to Kuiper Belt, farthest spacecraft, Oort Cloud, in AU.

Kuiper Belt: 30 to 55 AU

Farthest spacecraft: Voyager 1: 137.053 AU (as the October 2016)

Oort Cloud: 5,000 to 100,000 AU

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Largest circle v yellow arrowhead indicates one irradiate year from our sun. Smallest yellow round is one light-week. Bigger yellow round is one light-month. Read much more about this image at Wikimedia Commons.

See more: Analyze Conflict In The Short Story “The Bet” By Anton P. Chekhov.

Amount of distance in a light-year, in AU

One light-year = 63,240 AU

Bottom line: Astronomers favor to list the ranges to objects within our solar system (planets, dwarf planets, asteroids, comets, spacecraft, etc.) in terms of the expensive unit, or AU. One expensive unit is the approximate median distance in between the Earth and sun. It’s about 93 million miles (150 million km), or 8 light-minutes.