Coordinate Reference System example 2001-10-31T08:15:00.000Z John Smith ED50 European Datum 1950 ED50 / UTM Zone 31N ED50 / UTM Zone 31N Newlyn Newlyn ED50 4230 ED50 Geodetic survey. 6422 Ellipsoidal 2D CS. Axes: latitude, longitude. Orientations: north, east. UoM: deg Latitude, Longitude in degrees 9901 Geodetic latitude Lat north 9902 Geodetic longitude Lon east 6230 European Datum 1950 ED50 Topographic mapping, geodetic survey. Fundamental Point: Potsdam (Helmert Tower). Latitude: 52 deg 22 min 51.4456 sec N; Longitude: 13 deg 3 min 58.9283 sec E (of Greenwich). 8901 Greenwich 0.000000 Remarks: Adopted by IUGG 1924 in Madrid. Based on Hayford 1909/1910 figures. 7022 International 1924 Hayford 1909 6378388 297 ED50 / UTM Zone 31N 23031 ED50 / UTM zone 31N Large and medium scale topographic mapping and engineering survey. 16031 UTM zone 31N Large and medium scale topographic mapping and engineering survey. 9807 Transverse Mercator See EPSG guidance note 7 2 2 The latitude of the point from which the values of both the geographical coordinates on the ellipsoid and the grid coordinates on the projection are deemed to increment or decrement for computational purposes. Alternatively it may be considered as the latitude of the point which in the absence of application of false coordinates has grid coordinates of (0,0). 9807 Latitude of natural origin The longitude of the point from which the values of both the geographical coordinates on the ellipsoid and the grid coordinates on the projection are deemed to increment or decrement for computational purposes. Alternatively it may be considered as the longitude of the point which in the absence of application of false coordinates has grid coordinates of (0,0). Sometimes known as central meridian (CM). 8802 Longitude of natural origin The factor by which the map grid is reduced or enlarged during the projection process, defined by its value at the natural origin. 8805 Scale factor at natural origin Since the natural origin may be at or near the centre of the projection and under normal coordinate circumstances would thus give rise to negative coordinates over parts of the mapped area, this origin is usually given false coordinates which are large en 8806 False easting Since the natural origin may be at or near the centre of the projection and under normal coordinate circumstances would thus give rise to negative coordinates over parts of the mapped area, this origin is usually given false coordinates which are large en 8807 False northing 0 3 0.9996 500000 0 4230 ED50 Geodetic survey. 6422 Ellipsoidal 2D CS. Axes: latitude, longitude. Orientations: north, east. UoM: deg Latitude, Longitude in degrees 9901 Geodetic latitude Lat north 9902 Geodetic longitude Lon east 6230 European Datum 1950 ED50 Topographic mapping, geodetic survey. Fundamental Point: Potsdam (Helmert Tower). Latitude: 52 deg 22 min 51.4456 sec N; Longitude: 13 deg 3 min 58.9283 sec E (of Greenwich). 8901 Greenwich 0.000000 Remarks: Adopted by IUGG 1924 in Madrid. Based on Hayford 1909/1910 figures. 7022 International 1924 Hayford 1909 6378388 297 4400 "Cartesian 2D CS. Axes: easting, northing (E,N). Orientations: east, north. UoM: m." 9906 easting E east 9907 northing N north