{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"GeodeticCRS","name":"ETRS89 (geocentric)","datum_ensemble":{"name":"European Terrestrial Reference System 1989 ensemble","members":[{"name":"European Terrestrial Reference Frame 1989","id":{"authority":"EPSG","code":1178}},{"name":"European Terrestrial Reference Frame 1990","id":{"authority":"EPSG","code":1179}},{"name":"European Terrestrial Reference Frame 1991","id":{"authority":"EPSG","code":1180}},{"name":"European Terrestrial Reference Frame 1992","id":{"authority":"EPSG","code":1181}},{"name":"European Terrestrial Reference Frame 1993","id":{"authority":"EPSG","code":1182}},{"name":"European Terrestrial Reference Frame 1994","id":{"authority":"EPSG","code":1183}},{"name":"European Terrestrial Reference Frame 1996","id":{"authority":"EPSG","code":1184}},{"name":"European Terrestrial Reference Frame 1997","id":{"authority":"EPSG","code":1185}},{"name":"European Terrestrial Reference Frame 2000","id":{"authority":"EPSG","code":1186}},{"name":"European Terrestrial Reference Frame 2005","id":{"authority":"EPSG","code":1204}},{"name":"European Terrestrial Reference Frame 2014","id":{"authority":"EPSG","code":1206}},{"name":"European Terrestrial Reference Frame 2020","id":{"authority":"EPSG","code":1382}}],"ellipsoid":{"name":"GRS 1980","semi_major_axis":6378137,"inverse_flattening":298.257222101},"accuracy":"0.1","id":{"authority":"EPSG","code":6258}},"coordinate_system":{"subtype":"Cartesian","axis":[{"name":"Geocentric X","abbreviation":"X","direction":"geocentricX","unit":"metre"},{"name":"Geocentric Y","abbreviation":"Y","direction":"geocentricY","unit":"metre"},{"name":"Geocentric Z","abbreviation":"Z","direction":"geocentricZ","unit":"metre"}]},"scope":"Geodesy.","area":"Europe - onshore and offshore - ETRF extent - approximately 16°W to 33°E and 33°N to 84°N.","bbox":{"south_latitude":33.26,"west_longitude":-16.1,"north_latitude":84.73,"east_longitude":38.01},"id":{"authority":"EPSG","code":4346},"remarks":"The distinction in usage between ETRF89 and ETRS89 is confused: although in principle conceptually different in practice both are used as synonyms."}