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Galactic coordinate system

The galactic coordinate system is a celestial coordinate system that uses the Milky Way as its fundamental plane. The latitudinal angle is called the galactic latitude, and the longitudinal angle is called the galactic longitude. This coordinate system is useful for studying the galaxy itself. For example, you might want to know how the density of stars changes as a function of galactic latitude, to how much the disk of the Milky Way is flattened.

This article originates from Jason Harris' Astroinfo which comes along with KStars, a Desktop Planetarium for Linux/KDE. See http://edu.kde.org/kstars/index.phtml

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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Galactic coordinate system".