Geospatial Coordinate Reference System Cartesian Coordinate System Earth-Centered Earth-Fixed Coordinate System https://en.wikipedia.org/w/index.php?title=Earth-centered,_Earth-fixed_coordinate_system&oldid=1062678600 https://www.commoncoreontologies.org/InformationEntityOntology A Geospatial and Cartesian Coordinate System that identifies positions using an x-axis, y-axis, and z-axis coordinate where the zero point is the center of the Earth, the z-Axis extends toward the North Pole but does not always coincide exactly with the Earth's Axis of Rotation, the x-Axis extends through the intersection of the Prime Meridian and the Equator, the y-Axis completes the right-handed system, and all three axes are fixed to the Earth such that they rotate along with the Earth. Conventional Terrestrial Coordinate System ECEF ECR Earth Centered Earth Fixed Earth Centered Rotational Coordinate System Earth-Centered Earth-Fixed Earth-Centered, Earth-Fixed