Reference Ellipsoid Parameters
Reference Ellipsoid |
ID |
Semi-Major |
Semi-Minor |
Flattening |
Airy (1930) |
AA |
6377563.396 |
6356256.9090 |
1/299.3249646 |
Australian National |
AN |
6378160 |
6356774.7190 |
1/298.25 |
Bessel 1841 |
|
|
|
|
Ethiopia, Indonesia, Japan, Korea |
BR |
6377397.155 |
6356078.9630 |
1/299.1528128 |
Namibia |
BN |
6377483.865 |
6356165.383 |
1/299.1528128 |
Clarke 1866 |
CC |
6378206.4 |
6356583.800 |
1/294.9786982 |
Clarke 1880 |
CD |
6378249.145 |
6356514.870 |
1/293.465 |
Everest |
|
|
|
|
Brunei & E. Malasia (Sabah & Sarawak) |
EB |
6377298.556 |
6356097.550 |
1/300.8017 |
India 1830 |
EA |
6377276.345 |
6356075.413 |
1/300.8017 |
India 1956* |
EC |
6377301.243 |
6356100.228 |
1/300.8017 |
Pakistan* |
EF |
6377309.613 |
6356109.571 |
1/300.8017 |
W. Malasia and Singapore 1948 |
EE |
6377304.063 |
6356103.039 |
1/300.8017 |
W. Malasia 1969* |
ED |
6377295.664 |
6356094.668 |
1/300.8017 |
Geodetic Reference System 1980 (GRS 80) |
RF |
6378137 |
6356752.3141 |
1/298.257222101 |
Helmert 1906 |
HE |
6378200 |
6356818.170 |
1/298.3 |
Hough 1960 |
HO |
6378270 |
6356794.343 |
1/297 |
Indonesian 1974 |
ID |
6378160 |
6356774.504 |
1/298.247 |
International 1924 |
IN |
6378388 |
6356911.946 |
1/297 |
Krassovsky 1940 |
KA |
6378245 |
6356863.019 |
1/298.3 |
Modified Airy |
AM |
6377340.189 |
6356034.4480 |
1/299.3249646 |
Modified Fischer 1960 (South Asia) |
FA |
6378155 |
6356773.320 |
1/298.3 |
South American 1969 |
SA |
6378160 |
6356774.719 |
1/298.25 |
World Geodetic System 1972 (WGS 72) |
WD |
6378135 |
6356750.520 |
1/298.26 |
World Geodetic System 1984 (WGS 84) |
WE |
6378137 |
6356752.3142 |
1/298.257223563 |
NOTE: All measurements are in meters.
* Through adoption of a new yard to meter conversion factor in the referenced country.