Coordinate Systems for Planets and Satellites

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Below is a list of the IAU-accepted coordinate systems for the planets and satellites.

Target	Coordinate Systems	Control Networks	Cartographic Reference Ellipsoid
Amalthea	Planetographic, +West, 0 - 360		Spherical*, with radius 83.5 km
Ariel	Planetocentric, +East, 0 - 360		Spherical*, with radius 578.9 km
Callisto	Planetographic, +West, 0 - 360		Spherical*, with radius 2409.3 km
Deimos	Planetographic, +West, 0 - 360		Spherical*, with radius 6.2 km
Dione	Planetographic, +West, 0 - 360		Spherical, with radius 562.5 km
Enceladus	Planetographic, +West, 0 - 360		Spherical*, with radius 252.1 km
Epimetheus	Planetographic, +West, 0 - 360		Spherical, with radius 58.1 km
Europa	Planetographic, +West, 0 - 360		Spherical*, with radius 1562.09 km
Ganymede	Planetographic, +West, 0 - 360		Spherical*, with radius 2632.345 km
Hyperion	Planetographic, +West, 0 - 360		Spherical, with radius 135.0 km
Iapetus	Planetographic, +West, 0 - 360		Spherical, with radius 736.0 km
Io	Planetographic, +West, 0 - 360	Voyager/Galileo SSI	Spherical*, with radius 1821.46 km
Janus	Planetographic, +West, 0 - 360		Spherical, with radius 89.5 km
Mars	Planetographic, +West, 0 - 360 Planetocentric, +East, 0 - 360	MDIM 2.0 MDIM 2.1	Ellipsoid, with radii (A: 3396.19 & C: 3376.2) km
Mercury	Planetographic, +West, 0 - 360	Preliminary MESSENGER	Spherical, with radius 2439.7 km
Mimas	Planetographic, +West, 0 - 360		Spherical*, with radius 198.2 km
Miranda	Planetocentric, +East, 0 - 360		Spherical*, with radius 235.8 km
Moon	Planetographic, +East, -180 - 180	LOLA 2011 ULCN 2005	Spherical, with radius 1737.4 km
Oberon	Planetocentric, +East, 0 - 360		Spherical, with radius 761.4 km
Phobos	Planetographic, +West, 0 - 360		Spherical, with radius 11.08 km
Phoebe	Planetographic, +West, 0 - 360		Spherical, with radius 106.5 km
Proteus	Planetographic, +West, 0 - 360		Spherical*, with radius 208.0 km
Puck	Planetocentric, +East, 0 - 360		Spherical, with radius 77.0 km
Rhea	Planetographic, +West, 0 - 360		Spherical, with radius 764.1 km
Tethys	Planetographic, +West, 0 - 360		Spherical, with radius 536.3 km
Thebe	Planetographic, +West, 0 - 360		Spherical*, with radius 49.3 km
Titan	Planetographic, +West, 0 - 360		Spherical, with radius 2575.0 km
Titania	Planetocentric, +East, 0 - 360		Spherical, with radius 788.9 km
Triton	Planetographic, +East, 0 - 360		Spherical, with radius 1352.6 km
Umbriel	Planetocentric, +East, 0 - 360		Spherical, with radius 584.7 km
Venus	Planetocentric, +East, 0 - 360		Spherical, with radius 6051.8 km

*Note: Targets defined as triaxial ellipsoids but which are treated cartographically as spheres (as defined by the IAU).

Note: The IAU has a separate system for small bodies. Coordinates and systems for these targets will be updated when data are available.

Values used in these cartographic reference ellipsoids are from the Report of the IAU/IAG working group on cartographic coordinates and rotational elements.