EPSG:4700

IGN Astro 1960

Attributes

Unit: degree (supplier to define representation)

Geodetic CRS: IGN Astro 1960

Datum: IGN Astro 1960

Ellipsoid: Clarke 1880 (RGS)

Prime meridian: Greenwich

Data source: EPSG

Information source: OGP

Revision date: 2012-01-05

Scope: Minerals management (including oil and gas exploration and production).

Remarks: Mining title descriptions referring only to "Clarke 1880 ellipsoid" should be assumed to be referenced to this CRS. Oil industry considers Mining Cadastre 1999 to be exactly defined through tfm codes 15857-9. Replaced by Mauritania 1999 (code 4702).

Area of use: Mauritania - onshore.

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

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Center coordinates
-10.94 21.01

WGS84 bounds:
-17.08 14.72
-4.8 27.3

Mauritania - onshore.
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Definition: OGC Well Known Text

GEOGCS["IGN Astro 1960",
    DATUM["IGN_Astro_1960",
        SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465,
            AUTHORITY["EPSG","7012"]],
        AUTHORITY["EPSG","6700"]],
    PRIMEM["Greenwich",0,
        AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,
        AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4700"]]

Definition: OGC Well Known Text 2 (2019)

GEOGCRS["IGN Astro 1960",
    DATUM["IGN Astro 1960",
        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["Minerals management (including oil and gas exploration and production)."],
        AREA["Mauritania - onshore."],
        BBOX[14.72,-17.08,27.3,-4.8]],
    ID["EPSG",4700]]

Definition: ESRI Well Known Text

GEOGCS["GCS_IGN_Astro_1960",
    DATUM["D_IGN_Astro_1960",
        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 +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:4700","+proj=longlat +a=6378249.145 +rf=293.465 +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "GeographicCRS",
    "name": "IGN Astro 1960",
    "datum": {
        "type": "GeodeticReferenceFrame",
        "name": "IGN Astro 1960",
        "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": "Minerals management (including oil and gas exploration and production).",
    "area": "Mauritania - onshore.",
    "bbox": {
        "south_latitude": 14.72,
        "west_longitude": -17.08,
        "north_latitude": 27.3,
        "east_longitude": -4.8
    },
    "id": {
        "authority": "EPSG",
        "code": 4700
    }
}

Definition: GeoServer

4700=GEOGCS["IGN Astro 1960",DATUM["IGN_Astro_1960",SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465,AUTHORITY["EPSG","7012"]],AUTHORITY["EPSG","6700"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4700"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=longlat"
	"a=6378249.145"
	"rf=293.465"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=longlat +a=6378249.145 +rf=293.465 +no_defs +type=crs">
	<Layer srs="+proj=longlat +a=6378249.145 +rf=293.465 +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 4700, 'EPSG', 4700, '+proj=longlat +a=6378249.145 +rf=293.465 +no_defs +type=crs', 'GEOGCS["IGN Astro 1960",DATUM["IGN_Astro_1960",SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465,AUTHORITY["EPSG","7012"]],AUTHORITY["EPSG","6700"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4700"]]');