EPSG:4978

WGS 84

Attributes

Unit: metre

Geodetic CRS: WGS 84

Datum: World Geodetic System 1984 ensemble

Data source: EPSG

Information source: NIMA TR8350.2 January 2000 revision. http://earth-info.nga.mil/GandG/

Revision date: 2020-03-14

Scope: Geodesy. Navigation and positioning using GPS satellite system.

Area of use: World.

Coordinate system: Cartesian 3D CS (geocentric). Axes: geocentric X Y Z. Orientations: X and Y in equatorial plane, X positive through intersection with prime meridian, Y through 0°N 90°E. Z axis parallel to mean earth rotation axis and positive towards North Pole. UoM: m.

Covered area powered by MapTiler MapTiler logo
SimpleMap

Center coordinates
6378137.0 0.0

Projected bounds:
-6378137.0 -0.0
0.0 0.0

WGS84 bounds:
-180.0 -90.0
180.0 90.0

World.
MapTiler banner

Definition: OGC Well Known Text

GEOCCS["WGS 84",
    DATUM["WGS_1984",
        SPHEROID["WGS 84",6378137,298.257223563,
            AUTHORITY["EPSG","7030"]],
        AUTHORITY["EPSG","6326"]],
    PRIMEM["Greenwich",0,
        AUTHORITY["EPSG","8901"]],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    AXIS["Geocentric X",OTHER],
    AXIS["Geocentric Y",OTHER],
    AXIS["Geocentric Z",NORTH],
    AUTHORITY["EPSG","4978"]]

Definition: OGC Well Known Text 2 (2019)

GEODCRS["WGS 84",
    ENSEMBLE["World Geodetic System 1984 ensemble",
        MEMBER["World Geodetic System 1984 (Transit)"],
        MEMBER["World Geodetic System 1984 (G730)"],
        MEMBER["World Geodetic System 1984 (G873)"],
        MEMBER["World Geodetic System 1984 (G1150)"],
        MEMBER["World Geodetic System 1984 (G1674)"],
        MEMBER["World Geodetic System 1984 (G1762)"],
        MEMBER["World Geodetic System 1984 (G2139)"],
        ELLIPSOID["WGS 84",6378137,298.257223563,
            LENGTHUNIT["metre",1]],
        ENSEMBLEACCURACY[2.0]],
    PRIMEM["Greenwich",0,
        ANGLEUNIT["degree",0.0174532925199433]],
    CS[Cartesian,3],
        AXIS["(X)",geocentricX,
            ORDER[1],
            LENGTHUNIT["metre",1]],
        AXIS["(Y)",geocentricY,
            ORDER[2],
            LENGTHUNIT["metre",1]],
        AXIS["(Z)",geocentricZ,
            ORDER[3],
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Geodesy. Navigation and positioning using GPS satellite system."],
        AREA["World."],
        BBOX[-90,-180,90,180]],
    ID["EPSG",4978]]

Definition: PROJ.4

+proj=geocent +datum=WGS84 +units=m +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:4978","+proj=geocent +datum=WGS84 +units=m +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.5/projjson.schema.json",
    "type": "GeodeticCRS",
    "name": "WGS 84",
    "datum_ensemble": {
        "name": "World Geodetic System 1984 ensemble",
        "members": [
            {
                "name": "World Geodetic System 1984 (Transit)",
                "id": {
                    "authority": "EPSG",
                    "code": 1166
                }
            },
            {
                "name": "World Geodetic System 1984 (G730)",
                "id": {
                    "authority": "EPSG",
                    "code": 1152
                }
            },
            {
                "name": "World Geodetic System 1984 (G873)",
                "id": {
                    "authority": "EPSG",
                    "code": 1153
                }
            },
            {
                "name": "World Geodetic System 1984 (G1150)",
                "id": {
                    "authority": "EPSG",
                    "code": 1154
                }
            },
            {
                "name": "World Geodetic System 1984 (G1674)",
                "id": {
                    "authority": "EPSG",
                    "code": 1155
                }
            },
            {
                "name": "World Geodetic System 1984 (G1762)",
                "id": {
                    "authority": "EPSG",
                    "code": 1156
                }
            },
            {
                "name": "World Geodetic System 1984 (G2139)",
                "id": {
                    "authority": "EPSG",
                    "code": 1309
                }
            }
        ],
        "ellipsoid": {
            "name": "WGS 84",
            "semi_major_axis": 6378137,
            "inverse_flattening": 298.257223563
        },
        "accuracy": "2.0",
        "id": {
            "authority": "EPSG",
            "code": 6326
        }
    },
    "coordinate_system": {
        "subtype": "Cartesian",
        "axis": [
            {
                "name": "Geocentric X",
                "abbreviation": "X",
                "direction": "geocentricX",
                "unit": "metre"
            },
            {
                "name": "Geocentric Y",
                "abbreviation": "Y",
                "direction": "geocentricY",
                "unit": "metre"
            },
            {
                "name": "Geocentric Z",
                "abbreviation": "Z",
                "direction": "geocentricZ",
                "unit": "metre"
            }
        ]
    },
    "scope": "Geodesy. Navigation and positioning using GPS satellite system.",
    "area": "World.",
    "bbox": {
        "south_latitude": -90,
        "west_longitude": -180,
        "north_latitude": 90,
        "east_longitude": 180
    },
    "id": {
        "authority": "EPSG",
        "code": 4978
    }
}

Definition: GeoServer

4978=GEOCCS["WGS 84",DATUM["WGS_1984",SPHEROID["WGS 84",6378137,298.257223563,AUTHORITY["EPSG","7030"]],AUTHORITY["EPSG","6326"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Geocentric X",OTHER],AXIS["Geocentric Y",OTHER],AXIS["Geocentric Z",NORTH],AUTHORITY["EPSG","4978"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=geocent"
	"datum=WGS84"
	"units=m"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=geocent +datum=WGS84 +units=m +no_defs +type=crs">
	<Layer srs="+proj=geocent +datum=WGS84 +units=m +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 4978, 'EPSG', 4978, '+proj=geocent +datum=WGS84 +units=m +no_defs +type=crs', 'GEOCCS["WGS 84",DATUM["WGS_1984",SPHEROID["WGS 84",6378137,298.257223563,AUTHORITY["EPSG","7030"]],AUTHORITY["EPSG","6326"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Geocentric X",OTHER],AXIS["Geocentric Y",OTHER],AXIS["Geocentric Z",NORTH],AUTHORITY["EPSG","4978"]]');