EPSG
Instituto Geografico e Cadastral Lisbon via EuroGeographics; http://crs.bkg.bund.de/crs-eu/ Oil industry sources for origin description details.
2008-06-24
Topographic mapping.
Replaced by 1995 adjustment (datum code 6665).
Portugal - central Azores onshore - Faial, Graciosa, Pico, Sao Jorge, Terceira.
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "GeodeticReferenceFrame", "name": "Azores Central Islands 1948", "ellipsoid": { "name": "International 1924", "semi_major_axis": 6378388, "inverse_flattening": 297 }, "scope": "Topographic mapping.", "area": "Portugal - central Azores onshore - Faial, Graciosa, Pico, Sao Jorge, Terceira.", "bbox": { "south_latitude": 38.32, "west_longitude": -28.9, "north_latitude": 39.14, "east_longitude": -26.97 }, "id": { "authority": "EPSG", "code": 6183 } }