EPSG:CODE

EPSG:4700 — IGN Astro 1960

Geographic 2D · Mauritania - onshore

Export Formats

OGC WKT
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"]
]

Other CRS using IGN Astro 1960

Frequently Asked Questions

How do I add EPSG:4700 to GeoServer?

Add the following definition to your GeoServer configuration: 

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"]]
Read the full GeoServer guide →

How do I add EPSG:4700 to PostGIS?

Add the following definition to your PostGIS configuration: 

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"]]');
Read the full PostGIS guide →

How do I add EPSG:4700 to MapServer?

Add the following definition to your MapServer configuration: 

PROJECTION
  "+proj=longlat"
  "+a=6378249.145"
  "+rf=293.465"
  "+no_defs"
  "+type=crs"
END
Read the full MapServer guide →

How do I use EPSG:4700 with Proj4js?

Add the following definition to your Proj4js configuration: 

proj4.defs("EPSG:4700", "+proj=longlat +a=6378249.145 +rf=293.465 +no_defs +type=crs");
Read the full Proj4js guide →