Oort’s constant

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Oort’s constant

astronomy

Learn about this topic in these articles:

galactic rotation

In Milky Way Galaxy: Rotation
…2l, where A is called Oort’s constant and is approximately 15 km/sec/kiloparsec (1 kiloparsec is 3,260 light-years), r is the distance to the star, and l is the galactic longitude.
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