EPSG:6902 DEPRECATED

DATUM["Nord_de_Guerre_Paris",
    SPHEROID["Plessis 1817",6376523,308.64,
        AUTHORITY["EPSG","7027"]],
    AUTHORITY["EPSG","6902"]],
PRIMEM["Paris",2.33722917,
    AUTHORITY["EPSG","8903"]]

DATUM["Nord de Guerre (Paris)",
    ELLIPSOID["Plessis 1817",6376523,308.64,
        LENGTHUNIT["metre",1]],
    ID["EPSG",6902]],
PRIMEM["Paris",2.5969213,
    ANGLEUNIT["grad",0.0157079632679489],
    ID["EPSG",8903]]

DATUM["D_Nord_de_Guerre",
    SPHEROID["Plessis_1817",6376523.0,308.64]],
PRIMEM["Paris",2.33722917]

{
    "$schema": "https://proj.org/schemas/v0.5/projjson.schema.json",
    "type": "GeodeticReferenceFrame",
    "name": "Nord de Guerre (Paris)",
    "ellipsoid": {
        "name": "Plessis 1817",
        "semi_major_axis": 6376523,
        "inverse_flattening": 308.64
    },
    "prime_meridian": {
        "name": "Paris",
        "longitude": {
            "value": 2.5969213,
            "unit": {
                "type": "AngularUnit",
                "name": "grad",
                "conversion_factor": 0.0157079632679489
            }
        }
    },
    "scope": "Topographic mapping.",
    "area": "France - Alsace.",
    "bbox": {
        "south_latitude": 47.42,
        "west_longitude": 6.84,
        "north_latitude": 49.07,
        "east_longitude": 8.23
    },
    "id": {
        "authority": "EPSG",
        "code": 6902
    }
}