topocentric
adjective
1. Relative to an observer; that is, relative to a point on the surface of the Earth; said of a frame of reference, of a coordinate system, or the like, or of motion or position within such.
1. Relative to an observer; that is, relative to a point on the surface of the Earth; said of a frame of reference, of a coordinate system, or the like, or of motion or position within such.