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galactic longitude

noun

, Astronomy.
  1. the angular distance in degrees measured eastward in the galactic plane from a radius drawn from the earth as center to the constellation Sagittarius.


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Word History and Origins

Origin of galactic longitude1

First recorded in 1910–15
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Example Sentences

The position of the stars is here generally given in galactic longitude (l) and latitude (b).

The fourth column gives the galactic square, the fifth and sixth columns the galactic longitude and latitude.

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galactic latitudegalactic nebula