Ellipsoid: International 1924 Authalic Sphere
Prime meridian: Greenwich
Data source: EPSG
Information source: OGP
Revision date: 2006-09-22
Scope: Not a valid datum.
Remarks: Included for coordinate reference systems where datum is unknown.
Area of use: Not specified.
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "GeodeticReferenceFrame", "name": "Not specified (based on International 1924 Authalic Sphere)", "ellipsoid": { "name": "International 1924 Authalic Sphere", "radius": 6371228 }, "scope": "Not a valid datum.", "area": "Not specified.", "bbox": { "south_latitude": -90, "west_longitude": -180, "north_latitude": 90, "east_longitude": 180 }, "id": { "authority": "EPSG", "code": 6053 } }