# Astronomical unit definition, a unit of length, equal to the mean distance of the earth from the sun: approximately 93 million miles (150 million km). Abbreviation:

The IAU also defines other astronomical units: the astronomical unit of time is 1 day (d) of 86,400 SI seconds (s) (SI is the International System of Units) and the astronomical unit of mass is equal to the mass of the Sun, 1.9891×10 30 kg. Beyond the Solar System the distances in astronomy are so great that using the au becomes too cumbersome.

For example, the planet Mercury is about 1/3 of an AU from the sun, 2021-02-23 The Crossword Solver found 20 answers to the astronomical unit crossword clue. The Crossword Solver finds answers to American-style crosswords, British-style crosswords, general knowledge crosswords and cryptic crossword puzzles. Enter the answer length or the answer pattern to get better results. Click the answer to find similar crossword clues . The kilometer (SI symbol: km) or kilometre (British spelling) is a unit of length in the metric system, equal to 1000 meters (kilo- being the SI prefix for 1000). It is..more definition+ The astronomical unit (symbol au, or ua) is a unit of length, roughly the distance from Earth to the Sun. astronomical unit (AU): An astronomical unit (AU) is the mean distance between the center of the Earth and the center of the sun. The actual distance varies depending on the time of year, because the Earth's orbit around the sun is not a perfect circle.

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The distance is 150 million kilometres.

## Universum-Solen-Planeterna [7695]. Fråga: vad är AU? /johan l, videdal, malmö. Svar: I astronomiska sammanhang står det för Astronomical Unit, eller

A light-year (abbreviation: ly), sometimes referred to incorrectly as a light year, is a unit of length used informally to express astronomical distances. 2005-01-22 Astronomical Units synonyms, Astronomical Units pronunciation, Astronomical Units translation, English dictionary definition of Astronomical Units.

### 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.

The Milky Way contains some 200 × 10 9 stars, and interstellar dust and gas (∼200 pc thick) which spreads out to a diameter of about 50 kpc (hot gas atoms, the halo ). astronomical unit (AU): An astronomical unit (AU) is the mean distance between the center of the Earth and the center of the sun. The actual distance varies depending on the time of year, because the Earth's orbit around the sun is not a perfect circle. The mean, or average, separation is approximately 1.4959787 x 10 11 meters, which is An introduction to the astronomical units: the light-year, the parsec and the astronomical unit. By Cowen Physics (www.cowenphysics.com) Astronomical Units synonyms, Astronomical Units pronunciation, Astronomical Units translation, English dictionary definition of Astronomical Units. n. Abbr.

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Med denna online område enheter konvertering miniräknare, kan du konvertera square astronomical unit till square micron enkelt och snabbt, och vice versa. Au. Den Engelska att Sesotho ordlista online.

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The astronomical unit (au) is defined by the IAU as exactly 149,597,870,700 m. astronomical unit noun a unit of distance used in astronomy equal to the mean distance between the earth and the sun. 1 astronomical unit is equivalent to 1.495 × 10 11 metres or about 9.3 × 10 7 miles An Astronomical Unit (AU) is the average distance between Earth and the Sun, which is about 93 million miles or 150 million kilometers. Astronomical units are usually used to measure distances within our Solar System. For example, the planet Mercury is about 1/3 of an AU from the sun, 2021-02-23 The Crossword Solver found 20 answers to the astronomical unit crossword clue.

Convert square vara [Texas] to square astronomical unit (sq vara to au2), Area metric conversion using Converterin. 00007 00008 U. S. Naval Observatory 00009 Astronomical Applications Dept. const double T0; 00025 00026 /* 00027 Astronomical Unit in kilometers. The department has three sub-units: Theoretical Particle Physics, Computational Biology & Biological Physics and Lund Observatory.

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astronomical unit synonyms, astronomical unit pronunciation, astronomical unit translation, English dictionary definition of astronomical The astronomical unit is a unit of length which is approximately equal to the average distance of the Earth from the Sun. One astronomical unit is equal to:. (AU)The average distance between the Earth and Sun; a unit of measurement equal to 149 597 870 km. An Astronomical Unit (AU) is the average distance between Earth and the Sun, which is about 93 million miles or 150 million kilometers. Astronomical units are 以A.U.表示，其数值取地球和太阳之间的平均距离。国际天文学 中文名: 天文单位 ; 外文名: Astronomical Unit. 换 算: 149597870700米; 含 义: 长度单位; 符 号: A.U. 6 Feb 2008 One AU is roughly the average distance between the Sun and the But its formal definition by the International Astronomical Union (IAU) is (AU), mean distance between the earth and sun; one AU is c.92960000 mi ( 149604970 km). The astronomical unit is the principal unit of measurement within 29 Oct 2019 Earth-Sun Distance in Astronomical Units for Days of the Year.

## Astronomical Units to Kilometers Conversion Formula [X] km = 149597870.7 × [Y] au where [X] is the result in km and [Y] is the amount of au we want to convert 3.6 Astronomical Units to Kilometers Conversion breakdown and explanation

However this principle was first applied to the moon and the planets.

Table 1 summarizes a number of statistical solar wind properties derived from spacecraft measurements in Heliospheric Phenomena. Peter K.F. Grieder, in Cosmic Rays at Earth, 2001 The interplanetary magnetic field has been Pluto.