Topographic mapping.
SAD69 uses GRS 1967 ellipsoid but with 1/f to exactly 2 decimal places. Replaces original 1969 adjustment (datum code 6618) in Brazil.
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "GeodeticReferenceFrame", "name": "South American Datum 1969(96)", "ellipsoid": { "name": "GRS 1967 Modified", "semi_major_axis": 6378160, "inverse_flattening": 298.25 }, "scope": "Topographic mapping.", "area": "Brazil - onshore and offshore. Includes Rocas, Fernando de Noronha archipelago, Trindade, Ihlas Martim Vaz and Sao Pedro e Sao Paulo.", "bbox": { "south_latitude": -35.71, "west_longitude": -74.01, "north_latitude": 7.04, "east_longitude": -25.28 }, "id": { "authority": "EPSG", "code": 1075 } }