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geocentric longitude - [coordinate systems] The angle between the prime meridian and a line drawn from a point on the surface to the center of a sphere or spheroid. For an ellipsoid of revolution (such as the earth), geocentric longitude is the same as geodetic longitude.
[Category=Geospatial ]
Source: esri, 26 April 2012 07:33:54, http://support.esri.com/en/knowledgebase/GISDictionary/term/abbreviation
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