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The astronomical system of units, formerly called the IAU (1976) System of Astronomical Constants, is a system of measurement developed for use in astronomy. It was adopted by the International Astronomical Union (IAU) in 1976 via Resolution No. 1, and has been significantly updated in 1994 and 2009 (see Astronomical constant).
- Astronomical unit - Wikipedia
The astronomical unit (symbol: au, or AU) is a unit of...
- Astronomical unit - Simple English Wikipedia, the free ...
The astronomical unit ( AU) is a unit of length derived from...
- Astronomical unit - Wikipedia
El sistema astronómico de unidades, llamado formalmente «Sistema de constantes astronómicas de la IAU (1976)» (en inglés, IAU (1976) System of Astronomical Constants ), es un sistema de unidades desarrollado para su uso en astronomía. Fue adoptado por la Unión Astronómica Internacional (UAI) en 1976, 1 y ha sido ligeramente actualizado ...
astronomical unit (AU, or au), 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). Alternately, it can be considered the length of the semimajor axis—i.e., the length of half of the maximum diameter—of Earth’s elliptical orbit around the Sun.
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Home. Astronomy for the Public. Themes. Measuring the Universe. The IAU and astronomical units. Scientists use units all the time. The concept of an internationally standardised system of units is one of the most fundamental in experimental science.
The astronomical system of units, formerly called the IAU (1976) System of Astronomical Constants, is a system of measurement developed for use in astronomy. It was adopted by the International Astronomical Union (IAU) in 1976 via Resolution No. 1, [1] and has been significantly updated in 1994 and 2009 (see Astronomical constant ). Contents.
