Ellipsoid: International 1924
Prime meridian: Greenwich
Data source: EPSG
Information source: Instituto Geografico e Cadastral; Lisbon
Revision date: 2008-06-24
Scope: Topographic mapping.
Area of use: Portugal - mainland - onshore.
Definition: OGC Well Known Text
DATUM["Datum_73", SPHEROID["International 1924",6378388,297, AUTHORITY["EPSG","7022"]], AUTHORITY["EPSG","6274"]]
Definition: OGC Well Known Text 2 (2019)
DATUM["Datum 73", ELLIPSOID["International 1924",6378388,297, LENGTHUNIT["metre",1]], ID["EPSG",6274]]
Definition: ESRI Well Known Text
DATUM["D_Datum_73", SPHEROID["International_1924",6378388.0,297.0]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.5/projjson.schema.json", "type": "GeodeticReferenceFrame", "name": "Datum 73", "ellipsoid": { "name": "International 1924", "semi_major_axis": 6378388, "inverse_flattening": 297 }, "scope": "Topographic mapping.", "area": "Portugal - mainland - onshore.", "bbox": { "south_latitude": 36.95, "west_longitude": -9.56, "north_latitude": 42.16, "east_longitude": -6.19 }, "id": { "authority": "EPSG", "code": 6274 } }