Unit: metre
Data source: EPSG
Information source: OGP
Revision date: 2016-12-15
Orientation: geocentricX
Abbreviation: X
Axis order: 1..
Description: First axis of a right-handed earth centered 3D Cartesian coordinate system; lies in the equatorial plane such that a vector pointing in the direction of the positive X is in the plane of the international meridian.