Ellipsoid: Krassowsky 1940
Prime meridian: Greenwich
Data source: EPSG
Information source: PetroVietnam
Revision date: 1999-10-20
Scope: Geodesy, cadastre, engineering survey, topographic mapping.
Area of use: Vietnam - onshore.
Definition: OGC Well Known Text
DATUM["Hanoi_1972", SPHEROID["Krassowsky 1940",6378245,298.3, AUTHORITY["EPSG","7024"]], AUTHORITY["EPSG","6147"]]
Definition: OGC Well Known Text 2 (2019)
DATUM["Hanoi 1972", ELLIPSOID["Krassowsky 1940",6378245,298.3, LENGTHUNIT["metre",1]], ID["EPSG",6147]]
Definition: ESRI Well Known Text
DATUM["D_Hanoi_1972", SPHEROID["Krasovsky_1940",6378245.0,298.3]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.5/projjson.schema.json", "type": "GeodeticReferenceFrame", "name": "Hanoi 1972", "ellipsoid": { "name": "Krassowsky 1940", "semi_major_axis": 6378245, "inverse_flattening": 298.3 }, "scope": "Geodesy, cadastre, engineering survey, topographic mapping.", "area": "Vietnam - onshore.", "bbox": { "south_latitude": 8.33, "west_longitude": 102.14, "north_latitude": 23.4, "east_longitude": 109.53 }, "id": { "authority": "EPSG", "code": 6147 } }