Astronomy   View all facts   Glossary   Help

abstraction > mathematical concept > geometrical object > point > coordinate > planetographic coordinate

planetographic coordinate comparison table

Subject	is a kind of	has definition
coordinate	point	Quantities that provide references for locations in space and time.
planetographic coordinate	coordinate	Coordinates for cartographic purposes dependent on an equipotential surface as a reference surface. Longitude (see longitude, celestial) of a point is measured in the direction opposite to the rotation (positive to the west for direct rotation) from the cartographic position of the prime meridian defined by a clearly observable surface feature. Latitude (see latitude, celestial) of a point is the angle between the planetary equator (normal to the z-axis and through the center of mass) and normal to the reference surface at the point. The height of a point is specified as the distance above a point with the same longitude and latitude on the reference surface.

Next coordinate: rotating coordinate    Up: coordinate    Previous coordinate: planetocentric coordinate