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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How to use galactic longitude in a sentence
The position of the stars is here generally given in galactic longitude (l) and latitude (b).Lectures on Stellar Statistics | Carl Vilhelm Ludvig Charlier
The fourth column gives the galactic square, the fifth and sixth columns the galactic longitude and latitude.Lectures on Stellar Statistics | Carl Vilhelm Ludvig Charlier