EPSG:4819 DEPRECATED

Nord Sahara 1959 (Paris)

Available transformations
to EPSG:4326
EPSG:4326 - WGS 84

Selected transformation

Remarks:

Information source:

Revision date: 2002-09-19

Attributes

Unit: grad

Geodetic CRS: Nord Sahara 1959 (Paris)

Datum: Nord Sahara 1959 (Paris)

Ellipsoid: Clarke 1880 (RGS)

Prime meridian: Paris

Data source: EPSG

Information source: "Le System Geodesique Nord-Sahara"; IGN Paris

Revision date: 2000-10-19

Scope: Geodesy.

Area of use: Algeria; Morocco; Tunisia.

Coordinate system: Ellipsoidal 2D CS. Axes: latitude, longitude. Orientations: north, east. UoM: grads.

Covered area powered by MapTiler MapTiler logo
SimpleMap

Center coordinates
-0.75 32.09

WGS84 bounds:
-8.67 18.97
11.99 38.8

Algeria - onshore and offshore.
MapTiler banner

Definition: OGC Well Known Text 2 (2019)

BOUNDCRS[
    SOURCECRS[
        BOUNDCRS[
            SOURCECRS[
                GEOGCRS["Nord Sahara 1959 (Paris)",
                    DATUM["Nord Sahara 1959 (Paris)",
                        ELLIPSOID["Clarke 1880 (RGS)",6378249.145,293.465,
                            LENGTHUNIT["metre",1]]],
                    PRIMEM["Paris",2.5969213,
                        ANGLEUNIT["grad",0.0157079632679489]],
                    CS[ellipsoidal,2],
                        AXIS["geodetic latitude (Lat)",north,
                            ORDER[1],
                            ANGLEUNIT["grad",0.0157079632679489]],
                        AXIS["geodetic longitude (Lon)",east,
                            ORDER[2],
                            ANGLEUNIT["grad",0.0157079632679489]],
                    ID["EPSG",4819]]],
            TARGETCRS[
                GEOGCRS["Nord Sahara 1959",
                    DATUM["Nord Sahara 1959",
                        ELLIPSOID["Clarke 1880 (RGS)",6378249.145,293.465,
                            LENGTHUNIT["metre",1]]],
                    PRIMEM["Greenwich",0,
                        ANGLEUNIT["degree",0.0174532925199433]],
                    CS[ellipsoidal,2],
                        AXIS["geodetic latitude (Lat)",north,
                            ORDER[1],
                            ANGLEUNIT["degree",0.0174532925199433]],
                        AXIS["geodetic longitude (Lon)",east,
                            ORDER[2],
                            ANGLEUNIT["degree",0.0174532925199433]],
                    ID["EPSG",4307]]],
            ABRIDGEDTRANSFORMATION["Nord Sahara 1959 (Paris) to Nord Sahara 1959 (1)",
                METHOD["Longitude rotation",
                    ID["EPSG",9601]],
                PARAMETER["Longitude offset",8414.02501199997,
                    ID["EPSG",8602]],
                ID["EPSG",1882]]]],
    TARGETCRS[
        GEOGCRS["WGS 84",
            ENSEMBLE["World Geodetic System 1984 ensemble",
                MEMBER["World Geodetic System 1984 (Transit)"],
                MEMBER["World Geodetic System 1984 (G730)"],
                MEMBER["World Geodetic System 1984 (G873)"],
                MEMBER["World Geodetic System 1984 (G1150)"],
                MEMBER["World Geodetic System 1984 (G1674)"],
                MEMBER["World Geodetic System 1984 (G1762)"],
                MEMBER["World Geodetic System 1984 (G2139)"],
                ELLIPSOID["WGS 84",6378137,298.257223563,
                    LENGTHUNIT["metre",1]],
                ENSEMBLEACCURACY[2.0]],
            PRIMEM["Greenwich",0,
                ANGLEUNIT["degree",0.0174532925199433]],
            CS[ellipsoidal,2],
                AXIS["geodetic latitude (Lat)",north,
                    ORDER[1],
                    ANGLEUNIT["degree",0.0174532925199433]],
                AXIS["geodetic longitude (Lon)",east,
                    ORDER[2],
                    ANGLEUNIT["degree",0.0174532925199433]],
            USAGE[
                SCOPE["Horizontal component of 3D system."],
                AREA["World."],
                BBOX[-90,-180,90,180]],
            ID["EPSG",4326]]],
    ABRIDGEDTRANSFORMATION["Nord Sahara 1959 to WGS 84 (1)",
        METHOD["Geocentric translations (geog2D domain)",
            ID["EPSG",9603]],
        PARAMETER["X-axis translation",-186,
            ID["EPSG",8605]],
        PARAMETER["Y-axis translation",-93,
            ID["EPSG",8606]],
        PARAMETER["Z-axis translation",310,
            ID["EPSG",8607]],
        USAGE[
            SCOPE["Military survey."],
            AREA["Algeria - onshore."],
            BBOX[18.97,-8.67,37.14,11.99]],
        ID["EPSG",1253],
        REMARK["Derived at 3 stations. Accuracy 25m in each axis."]]]

Definition: PROJ.4

+proj=longlat +a=6378249.145 +rf=293.465 +pm=paris +towgs84=-186,-93,310,0,0,0,0 +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:4819","+proj=longlat +a=6378249.145 +rf=293.465 +pm=paris +towgs84=-186,-93,310,0,0,0,0 +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "BoundCRS",
    "source_crs": {
        "type": "BoundCRS",
        "source_crs": {
            "type": "GeographicCRS",
            "name": "Nord Sahara 1959 (Paris)",
            "datum": {
                "type": "GeodeticReferenceFrame",
                "name": "Nord Sahara 1959 (Paris)",
                "ellipsoid": {
                    "name": "Clarke 1880 (RGS)",
                    "semi_major_axis": 6378249.145,
                    "inverse_flattening": 293.465
                },
                "prime_meridian": {
                    "name": "Paris",
                    "longitude": {
                        "value": 2.5969213,
                        "unit": {
                            "type": "AngularUnit",
                            "name": "grad",
                            "conversion_factor": 0.0157079632679489
                        }
                    }
                }
            },
            "coordinate_system": {
                "subtype": "ellipsoidal",
                "axis": [
                    {
                        "name": "Geodetic latitude",
                        "abbreviation": "Lat",
                        "direction": "north",
                        "unit": {
                            "type": "AngularUnit",
                            "name": "grad",
                            "conversion_factor": 0.0157079632679489
                        }
                    },
                    {
                        "name": "Geodetic longitude",
                        "abbreviation": "Lon",
                        "direction": "east",
                        "unit": {
                            "type": "AngularUnit",
                            "name": "grad",
                            "conversion_factor": 0.0157079632679489
                        }
                    }
                ]
            },
            "id": {
                "authority": "EPSG",
                "code": 4819
            }
        },
        "target_crs": {
            "type": "GeographicCRS",
            "name": "Nord Sahara 1959",
            "datum": {
                "type": "GeodeticReferenceFrame",
                "name": "Nord Sahara 1959",
                "ellipsoid": {
                    "name": "Clarke 1880 (RGS)",
                    "semi_major_axis": 6378249.145,
                    "inverse_flattening": 293.465
                }
            },
            "coordinate_system": {
                "subtype": "ellipsoidal",
                "axis": [
                    {
                        "name": "Geodetic latitude",
                        "abbreviation": "Lat",
                        "direction": "north",
                        "unit": "degree"
                    },
                    {
                        "name": "Geodetic longitude",
                        "abbreviation": "Lon",
                        "direction": "east",
                        "unit": "degree"
                    }
                ]
            },
            "id": {
                "authority": "EPSG",
                "code": 4307
            }
        },
        "transformation": {
            "name": "Nord Sahara 1959 (Paris) to Nord Sahara 1959 (1)",
            "source_crs": {
                "type": "GeographicCRS",
                "name": "Nord Sahara 1959 (Paris) (with Greenwich prime meridian)",
                "datum": {
                    "type": "GeodeticReferenceFrame",
                    "name": "Nord Sahara 1959 (Paris) (with Greenwich prime meridian)",
                    "ellipsoid": {
                        "name": "Clarke 1880 (RGS)",
                        "semi_major_axis": 6378249.145,
                        "inverse_flattening": 293.465
                    }
                },
                "coordinate_system": {
                    "subtype": "ellipsoidal",
                    "axis": [
                        {
                            "name": "Geodetic latitude",
                            "abbreviation": "Lat",
                            "direction": "north",
                            "unit": {
                                "type": "AngularUnit",
                                "name": "grad",
                                "conversion_factor": 0.0157079632679489
                            }
                        },
                        {
                            "name": "Geodetic longitude",
                            "abbreviation": "Lon",
                            "direction": "east",
                            "unit": {
                                "type": "AngularUnit",
                                "name": "grad",
                                "conversion_factor": 0.0157079632679489
                            }
                        }
                    ]
                }
            },
            "method": {
                "name": "Longitude rotation",
                "id": {
                    "authority": "EPSG",
                    "code": 9601
                }
            },
            "parameters": [
                {
                    "name": "Longitude offset",
                    "value": 2.5969213,
                    "unit": {
                        "type": "AngularUnit",
                        "name": "grad",
                        "conversion_factor": 0.0157079632679489
                    },
                    "id": {
                        "authority": "EPSG",
                        "code": 8602
                    }
                }
            ],
            "id": {
                "authority": "EPSG",
                "code": 1882
            }
        }
    },
    "target_crs": {
        "type": "GeographicCRS",
        "name": "WGS 84",
        "datum_ensemble": {
            "name": "World Geodetic System 1984 ensemble",
            "members": [
                {
                    "name": "World Geodetic System 1984 (Transit)",
                    "id": {
                        "authority": "EPSG",
                        "code": 1166
                    }
                },
                {
                    "name": "World Geodetic System 1984 (G730)",
                    "id": {
                        "authority": "EPSG",
                        "code": 1152
                    }
                },
                {
                    "name": "World Geodetic System 1984 (G873)",
                    "id": {
                        "authority": "EPSG",
                        "code": 1153
                    }
                },
                {
                    "name": "World Geodetic System 1984 (G1150)",
                    "id": {
                        "authority": "EPSG",
                        "code": 1154
                    }
                },
                {
                    "name": "World Geodetic System 1984 (G1674)",
                    "id": {
                        "authority": "EPSG",
                        "code": 1155
                    }
                },
                {
                    "name": "World Geodetic System 1984 (G1762)",
                    "id": {
                        "authority": "EPSG",
                        "code": 1156
                    }
                },
                {
                    "name": "World Geodetic System 1984 (G2139)",
                    "id": {
                        "authority": "EPSG",
                        "code": 1309
                    }
                }
            ],
            "ellipsoid": {
                "name": "WGS 84",
                "semi_major_axis": 6378137,
                "inverse_flattening": 298.257223563
            },
            "accuracy": "2.0",
            "id": {
                "authority": "EPSG",
                "code": 6326
            }
        },
        "coordinate_system": {
            "subtype": "ellipsoidal",
            "axis": [
                {
                    "name": "Geodetic latitude",
                    "abbreviation": "Lat",
                    "direction": "north",
                    "unit": "degree"
                },
                {
                    "name": "Geodetic longitude",
                    "abbreviation": "Lon",
                    "direction": "east",
                    "unit": "degree"
                }
            ]
        },
        "id": {
            "authority": "EPSG",
            "code": 4326
        }
    },
    "transformation": {
        "name": "Nord Sahara 1959 to WGS 84 (1)",
        "source_crs": {
            "type": "GeographicCRS",
            "name": "Nord Sahara 1959",
            "datum": {
                "type": "GeodeticReferenceFrame",
                "name": "Nord Sahara 1959",
                "ellipsoid": {
                    "name": "Clarke 1880 (RGS)",
                    "semi_major_axis": 6378249.145,
                    "inverse_flattening": 293.465
                }
            },
            "coordinate_system": {
                "subtype": "ellipsoidal",
                "axis": [
                    {
                        "name": "Geodetic latitude",
                        "abbreviation": "Lat",
                        "direction": "north",
                        "unit": "degree"
                    },
                    {
                        "name": "Geodetic longitude",
                        "abbreviation": "Lon",
                        "direction": "east",
                        "unit": "degree"
                    }
                ]
            },
            "id": {
                "authority": "EPSG",
                "code": 4307
            }
        },
        "method": {
            "name": "Geocentric translations (geog2D domain)",
            "id": {
                "authority": "EPSG",
                "code": 9603
            }
        },
        "parameters": [
            {
                "name": "X-axis translation",
                "value": -186,
                "unit": "metre",
                "id": {
                    "authority": "EPSG",
                    "code": 8605
                }
            },
            {
                "name": "Y-axis translation",
                "value": -93,
                "unit": "metre",
                "id": {
                    "authority": "EPSG",
                    "code": 8606
                }
            },
            {
                "name": "Z-axis translation",
                "value": 310,
                "unit": "metre",
                "id": {
                    "authority": "EPSG",
                    "code": 8607
                }
            }
        ],
        "id": {
            "authority": "EPSG",
            "code": 1253
        }
    }
}

Definition: MapServer - MAPfile

PROJECTION
	"proj=longlat"
	"a=6378249.145"
	"rf=293.465"
	"pm=paris"
	"towgs84=-186,-93,310,0,0,0,0"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=longlat +a=6378249.145 +rf=293.465 +pm=paris +towgs84=-186,-93,310,0,0,0,0 +no_defs +type=crs">
	<Layer srs="+proj=longlat +a=6378249.145 +rf=293.465 +pm=paris +towgs84=-186,-93,310,0,0,0,0 +no_defs +type=crs">
	</Layer>
</Map>