{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"GeographicCRS","name":"Hanoi 1972","datum":{"type":"GeodeticReferenceFrame","name":"Hanoi 1972","ellipsoid":{"name":"Krassowsky 1940","semi_major_axis":6378245,"inverse_flattening":298.3}},"coordinate_system":{"subtype":"ellipsoidal","axis":[{"name":"Geodetic latitude","abbreviation":"Lat","direction":"north","unit":"degree"},{"name":"Geodetic longitude","abbreviation":"Lon","direction":"east","unit":"degree"}]},"scope":"Geodesy.","area":"Vietnam - onshore.","bbox":{"south_latitude":8.33,"west_longitude":102.14,"north_latitude":23.4,"east_longitude":109.53},"id":{"authority":"EPSG","code":4147},"remarks":"Replaces use of Indian 1960. Replaced by VN-2000 (CRS code 4756)."}