EPSG:4903 — Madrid 1870 (Madrid)

Geographic 2D · Spain - mainland onshore

Export Formats

OGC WKT

GEOGCS[
    "Madrid 1870 (Madrid)",
    DATUM[
        "Madrid_1870_Madrid",
        SPHEROID["Struve 1860",6378298.3,294.73,AUTHORITY["EPSG","7028"]],
        AUTHORITY["EPSG","6903"]
    ],
    PRIMEM["Madrid",-3.687375,AUTHORITY["EPSG","8905"]],
    UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4903"]
]

WKT2

GEOGCRS[
    "Madrid 1870 (Madrid)",
    DATUM[
        "Madrid 1870 (Madrid)",
        ELLIPSOID[
            "Struve 1860",
            6378298.3,
            294.73,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",7028]
        ],
        ID["EPSG",6903]
    ],
    PRIMEM[
        "Madrid",
        -3.687375,
        ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
        ID["EPSG",8905]
    ],
    CS[ellipsoidal,2,ID["EPSG",6422]],
    AXIS["Geodetic latitude (Lat)",north],
    AXIS["Geodetic longitude (Lon)",east],
    ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
    ID["EPSG",4903]
]

PROJ.4

+proj=longlat +a=6378298.3 +rf=294.73 +pm=-3.687375 +no_defs +type=crs

Proj4js

How to add a projection to Proj4js? →

proj4.defs("EPSG:4903", "+proj=longlat +a=6378298.3 +rf=294.73 +pm=-3.687375 +no_defs +type=crs");

JSON

{
  "type": "CoordinateReferenceSystem",
  "code": 4903,
  "name": "Madrid 1870 (Madrid)",
  "kind": "geographic 2D",
  "area": "Spain - mainland onshore",
  "unit": "degree (supplier to define representation)",
  "bbox": [
    35.95,
    -9.37,
    43.82,
    3.39
  ],
  "proj4": "+proj=longlat +a=6378298.3 +rf=294.73 +pm=-3.687375 +no_defs +type=crs"
}

PostGIS

How to add a projection to PostGIS? →

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (4903, 'EPSG', 4903, '+proj=longlat +a=6378298.3 +rf=294.73 +pm=-3.687375 +no_defs +type=crs', 'GEOGCS["Madrid 1870 (Madrid)",DATUM["Madrid_1870_Madrid",SPHEROID["Struve 1860",6378298.3,294.73,AUTHORITY["EPSG","7028"]],AUTHORITY["EPSG","6903"]],PRIMEM["Madrid",-3.687375,AUTHORITY["EPSG","8905"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4903"]]');

MapServer

How to add a projection to MapServer? →

PROJECTION
  "+proj=longlat"
  "+a=6378298.3"
  "+rf=294.73"
  "+pm=-3.687375"
  "+no_defs"
  "+type=crs"
END

GeoServer

How to add a projection to GeoServer? →

4903=GEOGCS["Madrid 1870 (Madrid)",DATUM["Madrid_1870_Madrid",SPHEROID["Struve 1860",6378298.3,294.73,AUTHORITY["EPSG","7028"]],AUTHORITY["EPSG","6903"]],PRIMEM["Madrid",-3.687375,AUTHORITY["EPSG","8905"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4903"]]

Related Coordinate Systems

Available Transformations (4)

Transformation	Source → Target	Accuracy (m)
Madrid 1870 (Madrid) to ED50 (2)	4903 → 4230	5
Madrid 1870 (Madrid) to ED50 (3)	4903 → 4230	5
Madrid 1870 (Madrid) to ED50 (1)	4903 → 4230	10
Madrid 1870 (Madrid) to WGS 84 (1)	4903 → 4326	14

Other CRS using Madrid 1870 (Madrid)

Frequently Asked Questions

How do I add EPSG:4903 to GeoServer?

Add the following definition to your GeoServer configuration:

4903=GEOGCS["Madrid 1870 (Madrid)",DATUM["Madrid_1870_Madrid",SPHEROID["Struve 1860",6378298.3,294.73,AUTHORITY["EPSG","7028"]],AUTHORITY["EPSG","6903"]],PRIMEM["Madrid",-3.687375,AUTHORITY["EPSG","8905"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4903"]]

Read the full GeoServer guide →

How do I add EPSG:4903 to PostGIS?

Add the following definition to your PostGIS configuration:

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (4903, 'EPSG', 4903, '+proj=longlat +a=6378298.3 +rf=294.73 +pm=-3.687375 +no_defs +type=crs', 'GEOGCS["Madrid 1870 (Madrid)",DATUM["Madrid_1870_Madrid",SPHEROID["Struve 1860",6378298.3,294.73,AUTHORITY["EPSG","7028"]],AUTHORITY["EPSG","6903"]],PRIMEM["Madrid",-3.687375,AUTHORITY["EPSG","8905"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4903"]]');

Read the full PostGIS guide →

How do I add EPSG:4903 to MapServer?

Add the following definition to your MapServer configuration:

PROJECTION
  "+proj=longlat"
  "+a=6378298.3"
  "+rf=294.73"
  "+pm=-3.687375"
  "+no_defs"
  "+type=crs"
END

Read the full MapServer guide →

How do I use EPSG:4903 with Proj4js?

Add the following definition to your Proj4js configuration:

proj4.defs("EPSG:4903", "+proj=longlat +a=6378298.3 +rf=294.73 +pm=-3.687375 +no_defs +type=crs");

Read the full Proj4js guide →