Convert from alen [Scandinavia] to astronomical unit

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Unit Definition (alen [Scandinavia])
The Alen is a traditional Scandinavian unit of distance, which is very similar to the North German Elle: which is roughly equal to 2 feet or 60 centimeters.

Unit Definition (astronomical unit)
An Astronomical Unit is approximately the mean distance between the Earth and the Sun. It is a derived constant and used to indicate distances within the solar system. Its formal definition is the radius of an unperturbed circular orbit a massless body would revolve about the sun in 2*(pi)/k days (i.e., 365.2568983.... days), where k is defined as the Gaussian constant exactly equal to 0.01720209895. Since an AU is based on radius of a circular orbit, one AU is actually slightly less than the average distance between the Earth and the Sun (approximately 150 million km or 93 million miles).

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