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galactic longitude
noun
, Astronomy.
- 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).
From Project Gutenberg
The fourth column gives the galactic square, the fifth and sixth columns the galactic longitude and latitude.
From Project Gutenberg
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