Ellipsoid: Indonesian National Spheroid
Prime meridian: Greenwich
Data source: EPSG
Information source: Bakosurtanal 1979 paper by Jacob Rais.
Revision date: 2012-03-25
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "GeodeticReferenceFrame", "name": "Indonesian Datum 1974", "ellipsoid": { "name": "Indonesian National Spheroid", "semi_major_axis": 6378160, "inverse_flattening": 298.247 }, "scope": "Topographic mapping.", "area": "Indonesia - onshore.", "bbox": { "south_latitude": -10.98, "west_longitude": 95.16, "north_latitude": 5.97, "east_longitude": 141.01 }, "id": { "authority": "EPSG", "code": 6238 } }