geographic 3D 2019-06-27 true false https://www.opengis.net/def/crs/OGC/0/CRS84h WGS 84 longitude-latitude-height World. -180 180 -90 90 OGP 2001-06-05 false false https://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 https://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. https://www.opengis.net/def/axis/EPSG/0/222 Lon east https://www.opengis.net/def/axis/EPSG/0/223 Lat north https://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 https://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 https://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 https://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 https://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