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The Earth-centered, Earth-fixed coordinate system (acronym ECEF), also known as the geocentric coordinate system, is a cartesian spatial reference system that represents locations in the vicinity of the Earth (including its surface, interior, atmosphere, and surrounding outer space) as X, Y, and Z measurements from its center of mass.
The World Geodetic System (WGS) is a standard used in cartography, geodesy, and satellite navigation including GPS.The current version, WGS 84, defines an Earth-centered, Earth-fixed coordinate system and a geodetic datum, and also describes the associated Earth Gravitational Model (EGM) and World Magnetic Model (WMM).
Tool Type Metadata types Coordinate parameters Description Licensing GeoLocator (project page) : Google Maps based {{coord}}, {{location}}, {{location dec}}, microformats, custom editable template
Centamap – launched in 1999, Centamap is built using data from the Hong Kong Government; GeoInfo Map [1] – a geospatial information service provided by the Hong Kong Special Administrative Region (HKSAR) Government.
Juan de la Cosa's map is a manuscript nautical chart of the world drawn on two joined sheets of parchment sewn onto a canvas backing. It measures 96 cm high by 183 cm wide. A legend written in Spanish at the western edge of the map translates as "Juan de la Cosa made this (map) in the port of Santa Maria in the year 1500".
The 1980 Geodetic Reference System (GRS 80) posited a 6 378 137 m semi-major axis and a 1 ⁄ 298.257222101 flattening. This system was adopted at the XVII General Assembly of the International Union of Geodesy and Geophysics in Canberra, Australia, 1979. The GRS 80 reference system was originally used by the World Geodetic System 1984 (WGS 84 ...
The Hereford Mappa Mundi, about 1300, Hereford Cathedral, England. A mappa mundi (Latin [ˈmappa ˈmʊndiː]; plural = mappae mundi; French: mappemonde; Middle English: mappemond) is any medieval European map of the world.
The Fra Mauro Map of the world. The map depicts Asia, Africa and Europe, with South at the top.. The Fra Mauro map is a map of the world made around 1450 by the Italian cartographer Fra Mauro, which is “considered the greatest memorial of medieval cartography."