geographic 3D
2019-06-27
true
false
http://www.opengis.net/def/crs/OGC/0/CRS84h
WGS 84 longitude-latitude-height
World.
-180
180
-90
90
OGP
2001-06-05
false
false
http://www.opengis.net/def/area/EPSG/0/1262
World
3D system frequently used in GIS, Web APIs and Web applications.
ellipsoidal
OGP
2015-05-22
true
false
http://www.opengis.net/def/cs/EPSG/0/6426
Ellipsoidal 3D CS. Axes: longitude, latitude, ellipsoidal height. Orientations: east, north, up. UoM: degree, degree, metre.
Used in some geographic 3D CRSs for web mapping. CS code 6423 recommended instead. Horizontal coordinates referenced to this CS are in degrees. Any degree representation (e.g. DMSH, decimal, etc.) may be used but that used must be declared for the user.
http://www.opengis.net/def/axis/EPSG/0/222
Lon
east
http://www.opengis.net/def/axis/EPSG/0/223
Lat
north
http://www.opengis.net/def/axis/EPSG/0/224
h
up
geodetic
NIMA TR8350.2 June 2004 revision. http://earth-info.nga.mil/GandG/publications/tr8350.2/tr8350_2.html and
http://gis-lab.info/docs/nima-tr8350.2-addendum.pdf. Also NGA.STND.0036_1.0.0_WGS84 of 2014-07-08.
2017-07-14
true
false
http://www.opengis.net/def/datum/EPSG/0/6326
World Geodetic System 1984
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.
World.
-180
180
-90
90
OGP
2001-06-05
false
false
http://www.opengis.net/def/area/EPSG/0/1262
World
Satellite navigation.
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).
OGP
2016-12-15
true
false
http://www.opengis.net/def/meridian/EPSG/0/8901
Greenwich
The international reference meridian as defined first by the 1884 International Meridian Conference and later by the Bureau International de l'Heure (BIH) and then the International Earth Rotation Service (IERS).
0
DMA Technical Manual 8350.2-B
2015-11-25
true
false
http://www.opengis.net/def/ellipsoid/EPSG/0/7030
WGS 84
1/f derived from four defining parameters semi-major axis; C20 = -484.16685*10e-6; earth's angular velocity ? = 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.
6378137
298.257223563