Ellipsoid: Bessel 1841
Prime meridian: Athens
Data source: EPSG
Information source: Topography Department; National Technical University of Athens
Revision date: 2022-12-12
Scope: Topographic mapping.
Remarks: See geodetic datum alias 6404. Used as basis of topographic mapping based on Hatt projection.
Area of use: Greece - onshore.
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "GeodeticReferenceFrame", "name": "Greek (Athens)", "ellipsoid": { "name": "Bessel 1841", "semi_major_axis": 6377397.155, "inverse_flattening": 299.1528128 }, "prime_meridian": { "name": "Athens", "longitude": 23.7163375 }, "scope": "Topographic mapping.", "area": "Greece - onshore.", "bbox": { "south_latitude": 34.88, "west_longitude": 19.57, "north_latitude": 41.75, "east_longitude": 28.3 }, "id": { "authority": "EPSG", "code": 6815 } }