planetarycentric
Planetarycentric is an adjective used in astronomy and spaceflight to describe reference frames, coordinate systems, or models in which a planet acts as the central body. In practice, planetarycentric (often written as planet-centric or planet-centered in some sources) denotes measurements or calculations that take the planet’s center of mass as the origin or primary gravitational influence.
In celestial mechanics and mission analysis, planetarycentric frames are used to describe the motion of natural
Planetarycentric is distinct from related frames such as barycentric (center of mass of a system), heliocentric
See also: barycentric coordinates, geocentric coordinate system, heliocentric coordinate system, planetocentric coordinates.