EPSG:4273 — NGO 1948

Geographic 2D · Norway - onshore

Export Formats

OGC WKT

GEOGCS[
    "NGO 1948",
    DATUM[
        "NGO_1948",
        SPHEROID["Bessel Modified",6377492.018,299.1528128],
        TOWGS84[278.3,93,474.5,7.889,0.05,-6.61,6.21]
    ],
    PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4273"]
]

WKT2

GEOGCRS[
    "NGO 1948",
    DATUM[
        "NGO 1948",
        ELLIPSOID[
            "Bessel Modified",
            6377492.018,
            299.1528128,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",7005]
        ],
        ID["EPSG",6273]
    ],
    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",4273]
]

PROJ.4

+proj=longlat +a=6377492.018 +rf=299.1528128 +towgs84=278.3,93,474.5,7.889,0.05,-6.61,6.21 +no_defs +type=crs

Proj4js

How to add a projection to Proj4js? →

proj4.defs("EPSG:4273", "+proj=longlat +a=6377492.018 +rf=299.1528128 +towgs84=278.3,93,474.5,7.889,0.05,-6.61,6.21 +no_defs +type=crs");

JSON

{
  "type": "CoordinateReferenceSystem",
  "code": 4273,
  "name": "NGO 1948",
  "kind": "geographic 2D",
  "area": "Norway - onshore",
  "unit": "degree (supplier to define representation)",
  "bbox": [
    57.9,
    4.39,
    71.24,
    31.32
  ],
  "proj4": "+proj=longlat +a=6377492.018 +rf=299.1528128 +towgs84=278.3,93,474.5,7.889,0.05,-6.61,6.21 +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 (4273, 'EPSG', 4273, '+proj=longlat +a=6377492.018 +rf=299.1528128 +towgs84=278.3,93,474.5,7.889,0.05,-6.61,6.21 +no_defs +type=crs', 'GEOGCS["NGO 1948",DATUM["NGO_1948",SPHEROID["Bessel Modified",6377492.018,299.1528128],TOWGS84[278.3,93,474.5,7.889,0.05,-6.61,6.21]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4273"]]');

MapServer

How to add a projection to MapServer? →

PROJECTION
  "+proj=longlat"
  "+a=6377492.018"
  "+rf=299.1528128"
  "+towgs84=278.3,93,474.5,7.889,0.05,-6.61,6.21"
  "+no_defs"
  "+type=crs"
END

GeoServer

How to add a projection to GeoServer? →

4273=GEOGCS["NGO 1948",DATUM["NGO_1948",SPHEROID["Bessel Modified",6377492.018,299.1528128],TOWGS84[278.3,93,474.5,7.889,0.05,-6.61,6.21]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4273"]]

Related Coordinate Systems

Available Transformations (5)

Transformation	Source → Target	Accuracy (m)
NGO 1948 (Oslo) to NGO1948 (1)	4817 → 4273	0
ETRS89-NOR [EUREF89] to NGO 1948 (2)	10875 → 4273	0.1
NGO 1948 to ETRS89-NOR [EUREF89] (1)	4273 → 10875	3
NGO 1948 to WGS 84 (1)	4273 → 4326	3
NGO 1948 (Oslo) to NGO1948 (Greenwich) Deprecated	4817 → 4273	—

Frequently Asked Questions

How do I add EPSG:4273 to GeoServer?

Add the following definition to your GeoServer configuration:

4273=GEOGCS["NGO 1948",DATUM["NGO_1948",SPHEROID["Bessel Modified",6377492.018,299.1528128],TOWGS84[278.3,93,474.5,7.889,0.05,-6.61,6.21]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4273"]]

Read the full GeoServer guide →

How do I add EPSG:4273 to PostGIS?

Add the following definition to your PostGIS configuration:

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (4273, 'EPSG', 4273, '+proj=longlat +a=6377492.018 +rf=299.1528128 +towgs84=278.3,93,474.5,7.889,0.05,-6.61,6.21 +no_defs +type=crs', 'GEOGCS["NGO 1948",DATUM["NGO_1948",SPHEROID["Bessel Modified",6377492.018,299.1528128],TOWGS84[278.3,93,474.5,7.889,0.05,-6.61,6.21]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4273"]]');

Read the full PostGIS guide →

How do I add EPSG:4273 to MapServer?

Add the following definition to your MapServer configuration:

PROJECTION
  "+proj=longlat"
  "+a=6377492.018"
  "+rf=299.1528128"
  "+towgs84=278.3,93,474.5,7.889,0.05,-6.61,6.21"
  "+no_defs"
  "+type=crs"
END

Read the full MapServer guide →

How do I use EPSG:4273 with Proj4js?

Add the following definition to your Proj4js configuration:

proj4.defs("EPSG:4273", "+proj=longlat +a=6377492.018 +rf=299.1528128 +towgs84=278.3,93,474.5,7.889,0.05,-6.61,6.21 +no_defs +type=crs");

Read the full Proj4js guide →