Convert a.u. of length to astronomical unit
Please provide values below to convert a.u. of length [a.u., b] to astronomical unit [AU, UA], or Convert astronomical unit to a.u. of length.
How to Convert A.u. Of Length to Astronomical Unit
1 a.u., b = 3.53733142406284e-22 AU, UA
Example: convert 15 a.u., b to AU, UA:
15 a.u., b = 15 × 3.53733142406284e-22 AU, UA = 5.30599713609426e-21 AU, UA
A.u. Of Length to Astronomical Unit Conversion Table
| a.u. of length | astronomical unit |
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A.u. Of Length
The atomic unit of length, also known as the Bohr radius (a₀), is approximately 5.29 x 10⁻¹¹ meters.
History/Origin
The Bohr radius is named after Niels Bohr, who proposed a model of the atom in 1913 where the electron orbits the nucleus at specific distances. The Bohr radius is the most probable distance between the proton and electron in a hydrogen atom in its ground state.
Current Use
The atomic unit of length is used in atomic physics to simplify calculations and equations.
Astronomical Unit
The astronomical unit is a unit of length, now defined as exactly 149,597,870,700 meters. It is approximately the average distance between the Earth and the Sun.
History/Origin
Historically, the astronomical unit was the mean Earth-Sun distance. In 2012, the International Astronomical Union (IAU) redefined it as a fixed constant.
Current Use
The astronomical unit is used primarily for measuring distances within the Solar System or around other stars.