Code figure |
Description |
Unit |
Status |
0 |
Earth assumed spherical with radius = 6 367 470.0 m |
|
Operational |
1 |
Earth assumed spherical with radius specified (in m) by data producer |
|
Operational |
2 |
Earth assumed oblate spheroid with size as determined by IAU in 1965 (major axis = 6 378 160.0 m, minor axis = 6 356 775.0 m, f = 1/297.0) |
|
Operational |
3 |
Earth assumed oblate spheroid with major and minor axes specified (in km) by data producer |
|
Operational |
4 |
Earth assumed oblate spheroid as defined in IAG-GRS80 model (major axis = 6 378 137.0 m, minor axis = 6 356 752.314 m, f = 1/298.257 222 101) |
|
Operational |
5 |
Earth assumed represented by WGS84 (as used by ICAO since 1998) |
|
Operational |
6 |
Earth assumed spherical with radius of 6 371 229.0 m |
|
Operational |
7 |
Earth assumed oblate spheroid with major or minor axes specified (in m) by data producer |
|
Operational |
8 |
Earth model assumed spherical with radius of 6 371 200 m, but the horizontal datum of the resulting latitude/longitude field is the WGS84 reference frame |
|
Operational |
9 |
Earth represented by the Ordnance Survey Great Britain 1936 Datum, using the Airy 1830 Spheroid, the Greenwich meridian as 0 longitude, and the Newlyn datum as mean sea level, 0 height |
|
Operational |
10-191 |
Reserved |
|
Operational |
192-254 |
Reserved for local use |
|
Operational |
255 |
Missing |
|
Operational |