EPSG:4307

Nord Sahara 1959

Attributes

Unit: degree (supplier to define representation)

Geodetic CRS: Nord Sahara 1959

Datum: Nord Sahara 1959

Ellipsoid: Clarke 1880 (RGS)

Prime meridian: Greenwich

Data source: EPSG

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

Revision date: 2012-04-18

Scope: Geodesy.

Remarks: Sometimes incorrectly referred to as Voirol Unifie 1960: this is NOT a GeogCRS but two projected CRSs based on Nord Sahara 1959 (codes 30791-92). Strictly applicable only to north of 32°N but extended southwards non-homogoneously by oil industry.

Area of use: Algeria - onshore and offshore.

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

Center coordinates
1.66 28.88

WGS84 bounds:
-8.67 18.97
11.99 38.8

Algeria - onshore and offshore.
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Definition: OGC Well Known Text

GEOGCS["Nord Sahara 1959",
    DATUM["Nord_Sahara_1959",
        SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465],
        TOWGS84[-209.3622,-87.8162,404.6198,0.0046,3.4784,0.5805,-1.4547]],
    PRIMEM["Greenwich",0,
        AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,
        AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4307"]]

Definition: OGC Well Known Text 2 (2019)

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]],
    USAGE[
        SCOPE["Geodesy."],
        AREA["Algeria - onshore and offshore."],
        BBOX[18.97,-8.67,38.8,11.99]],
    ID["EPSG",4307]]

Definition: ESRI Well Known Text

GEOGCS["GCS_Nord_Sahara_1959",
    DATUM["D_Nord_Sahara_1959",
        SPHEROID["Clarke_1880_RGS",6378249.145,293.465]],
    PRIMEM["Greenwich",0.0],
    UNIT["Degree",0.0174532925199433]]

Definition: PROJ.4

+proj=longlat +a=6378249.145 +rf=293.465 +towgs84=-209.3622,-87.8162,404.6198,0.0046,3.4784,0.5805,-1.4547 +no_defs +type=crs

Definition: JavaScript (Proj4js)

proj4.defs("EPSG:4307","+proj=longlat +a=6378249.145 +rf=293.465 +towgs84=-209.3622,-87.8162,404.6198,0.0046,3.4784,0.5805,-1.4547 +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.5/projjson.schema.json",
    "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"
            }
        ]
    },
    "scope": "Geodesy.",
    "area": "Algeria - onshore and offshore.",
    "bbox": {
        "south_latitude": 18.97,
        "west_longitude": -8.67,
        "north_latitude": 38.8,
        "east_longitude": 11.99
    },
    "id": {
        "authority": "EPSG",
        "code": 4307
    }
}

Definition: GeoServer

4307=GEOGCS["Nord Sahara 1959",DATUM["Nord_Sahara_1959",SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465],TOWGS84[-209.3622,-87.8162,404.6198,0.0046,3.4784,0.5805,-1.4547]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4307"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=longlat"
	"a=6378249.145"
	"rf=293.465"
	"towgs84=-209.3622,-87.8162,404.6198,0.0046,3.4784,0.5805,-1.4547"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=longlat +a=6378249.145 +rf=293.465 +towgs84=-209.3622,-87.8162,404.6198,0.0046,3.4784,0.5805,-1.4547 +no_defs +type=crs">
	<Layer srs="+proj=longlat +a=6378249.145 +rf=293.465 +towgs84=-209.3622,-87.8162,404.6198,0.0046,3.4784,0.5805,-1.4547 +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 4307, 'EPSG', 4307, '+proj=longlat +a=6378249.145 +rf=293.465 +towgs84=-209.3622,-87.8162,404.6198,0.0046,3.4784,0.5805,-1.4547 +no_defs +type=crs', 'GEOGCS["Nord Sahara 1959",DATUM["Nord_Sahara_1959",SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465],TOWGS84[-209.3622,-87.8162,404.6198,0.0046,3.4784,0.5805,-1.4547]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4307"]]');