EPSG Geodetic Parameter Dataset
Version: 9.2
WGS 84
EPSG Geodetic Parameter Registry
Version: 9.2
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Geodetic CRS (Geographic 2D)
Name WGS 84 VALID
Identifier
urn:ogc:def:crs:EPSG::4326
EPSG::4326
Scope Horizontal component of 3D system. Used by the GPS satellite navigation system and for NATO military geodetic surveying.
Remarks
Area Description World.Identifier: EPSG::1262
Derived From Base CRS Name WGS 84Identifier: EPSG::4979
Base CRS Type geographic 3D
Conversion Name geographic3D to geographic2DIdentifier: EPSG::15593
Operation Method Geographic3D to 2D conversionIdentifier: EPSG::9659
Is the operation reversible? Yes
Geodetic Datum World Geodetic System 1984    —    Alias(es): [WGS 84]Identifier: EPSG::6326
Datum Epoch
Datum Origin Defined through a consistent set of station coordinates. These have changed with time: by 0.7m on 1994-06-29 (G730), a further 0.2m on 1997-01-29 (G873), 0.06m on 2002-01-20 (G1150), 0.2m on 2012-02-08 (G1674) and 0.02m on 2013-10-16 (G1762).
Datum Remarks EPSG::6326 has been the then current realization. No distinction is made between the original and subsequent (G730, G873, G1150, G1674 and G1762) WGS 84 frames. Since 1997, WGS 84 has been maintained within 10cm of the then current ITRF.
Prime Meridian Greenwich
degreeIdentifier: EPSG::8901
Ellipsoid WGS 84    —    Alias(es): [WGS84]Identifier: EPSG::7030
Remarks 1/f derived from four defining parameters semi-major axis; C20 = -484.16685*10e-6; earth's angular velocity ω = 7292115e-11 rad/sec; gravitational constant GM = 3986005e8 m*m*m/s/s. In 1994 new GM = 3986004.418e8 m*m*m/s/s but a and 1/f retained.
Shape Ellipsoid
Semi-Major Axis (a) 6378137 metreIdentifier: EPSG::9001
Inverse flattening 298.257223563 unityIdentifier: EPSG::9201
Coordinate Axes Order Axis Name Axis Identifier Abbrev. Unit of Measure UoM Identifier Orientation
CS Identifier: EPSG::6422 1 Geodetic latitude
urn:ogc:def:axis:EPSG::106
EPSG::106
Lat degree (supplier to define representation)
urn:ogc:def:uom:EPSG::9122
EPSG::9122
north
2 Geodetic longitude
urn:ogc:def:axis:EPSG::107
EPSG::107
Lon degree (supplier to define representation)
urn:ogc:def:uom:EPSG::9122
EPSG::9122
east
Life Cycle Status Is Valid? Yes
Superseded? No
Deprecated? No
Information Source EPSG. See 3D CRS for original information source.
Data Source OGP
Change Request
urn:ogc:def:change-request:EPSG::2002.151
EPSG::2002.151
urn:ogc:def:change-request:EPSG::2003.370
EPSG::2003.370
urn:ogc:def:change-request:EPSG::2006.810
EPSG::2006.810
urn:ogc:def:change-request:EPSG::2007.079
EPSG::2007.079
Revision Date 2007-08-27