EPSG:4274

Datum 73

Transform Get position on a map

Available transformations
to EPSG:4326
EPSG:4326 - WGS 84

Selected transformation

Method: Coordinate Frame rotation (geog2D domain)

Remarks:

Information source: Centre for Geodesy and Cartography, Portuguese Geographical Institute; http:/www.igeo.pt

Revision date: 2020-03-14

Attributes

Unit: degree (supplier to define representation)

Geodetic CRS: Datum 73

Datum: Datum 73

Ellipsoid: International 1924

Prime meridian: Greenwich

Data source: EPSG

Information source: Geodetic Services Directorate, Instituto Geografico e Cadastral, Lisbon; http://www.igeo.pt/

Revision date: 2004-01-06

Scope: Geodesy.

Area of use: Portugal - mainland - onshore.

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

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Center coordinates
-7.88 39.55

WGS84 bounds:
-9.56 36.95
-6.19 42.16

Portugal - mainland - onshore.
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Definition: OGC Well Known Text

GEOGCS["Datum 73",
    DATUM["Datum_73",
        SPHEROID["International 1924",6378388,297],
        TOWGS84[-239.749,88.181,30.488,-0.263,-0.082,-1.211,2.229]],
    PRIMEM["Greenwich",0,
        AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,
        AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4274"]]

Definition: OGC Well Known Text 2 (2019)

GEOGCRS["Datum 73",
    DATUM["Datum 73",
        ELLIPSOID["International 1924",6378388,297,
            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["Portugal - mainland - onshore."],
        BBOX[36.95,-9.56,42.16,-6.19]],
    ID["EPSG",4274]]

Definition: ESRI Well Known Text

GEOGCS["GCS_Datum_73",
    DATUM["D_Datum_73",
        SPHEROID["International_1924",6378388.0,297.0]],
    PRIMEM["Greenwich",0.0],
    UNIT["Degree",0.0174532925199433]]

Definition: PROJ.4

+proj=longlat +ellps=intl +towgs84=-239.749,88.181,30.488,-0.263,-0.082,-1.211,2.229 +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:4274","+proj=longlat +ellps=intl +towgs84=-239.749,88.181,30.488,-0.263,-0.082,-1.211,2.229 +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "GeographicCRS",
    "name": "Datum 73",
    "datum": {
        "type": "GeodeticReferenceFrame",
        "name": "Datum 73",
        "ellipsoid": {
            "name": "International 1924",
            "semi_major_axis": 6378388,
            "inverse_flattening": 297
        }
    },
    "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": "Portugal - mainland - onshore.",
    "bbox": {
        "south_latitude": 36.95,
        "west_longitude": -9.56,
        "north_latitude": 42.16,
        "east_longitude": -6.19
    },
    "id": {
        "authority": "EPSG",
        "code": 4274
    }
}

Definition: GeoServer

4274=GEOGCS["Datum 73",DATUM["Datum_73",SPHEROID["International 1924",6378388,297],TOWGS84[-239.749,88.181,30.488,-0.263,-0.082,-1.211,2.229]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4274"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=longlat"
	"ellps=intl"
	"towgs84=-239.749,88.181,30.488,-0.263,-0.082,-1.211,2.229"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=longlat +ellps=intl +towgs84=-239.749,88.181,30.488,-0.263,-0.082,-1.211,2.229 +no_defs +type=crs">
	<Layer srs="+proj=longlat +ellps=intl +towgs84=-239.749,88.181,30.488,-0.263,-0.082,-1.211,2.229 +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 4274, 'EPSG', 4274, '+proj=longlat +ellps=intl +towgs84=-239.749,88.181,30.488,-0.263,-0.082,-1.211,2.229 +no_defs +type=crs', 'GEOGCS["Datum 73",DATUM["Datum_73",SPHEROID["International 1924",6378388,297],TOWGS84[-239.749,88.181,30.488,-0.263,-0.082,-1.211,2.229]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4274"]]');