galactic longitude
Quick Summary
In astronomy, galactic longitude is one of two coordinates used to locate objects within the Milky Way Galaxy. It is measured in degrees eastward from an imaginary line that runs through the plane of the Galaxy. This line connects Earth to a point near the galactic center in the constellation Sagittarius.12
Galactic latitude, the other coordinate, measures how far north or south an object is from the Galaxy's fundamental plane of symmetry, known as the galactic equator. These coordinates are essential for understanding the relative positions and movements of different components within our galaxy.1
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