Reference Ellipsoid Parameters
Reference Ellipsoid |
ID |
Semi-Major |
Semi-Minor |
Inverse |
Airy
(1930) |
AA |
6377563.396000000 |
6356256.909237285 |
299.3249646000000 |
Australian
National |
AN |
6378160.000000000 |
6356774.719195306 |
298.2500000000000
|
Bessel
1841 |
|
|
|
|
|
BR |
6377397.155000000 |
6356078.962818188 |
299.1528128000000
|
|
BN |
6377483.865000000 |
6356165.382966325 |
299.1528128000000
|
Clarke
1866 |
CC |
6378206.400000000 |
6356583.800000000 |
294.9786982139058
|
Clarke
1880 |
CD |
6378249.145000000 |
6356514.869549776 |
293.4650000000000
|
Everest |
|
|
|
|
Brunei & E. Malaysia (Sabah & Sarawak) |
EB |
6377298.556000000 |
6356097.550300897 |
300.8017000000000
|
|
EA |
6377276.345000000 |
6356075.413140240 |
300.8017000000000
|
|
EC |
6377301.243000000 |
6356100.228368101 |
300.8017000000000
|
|
EF |
6377309.613000000 |
6356108.570542461 |
300.8017000000000
|
W. Malaysia and |
EE |
6377304.063000000 |
6356103.038993154 |
300.8017000000000
|
W. |
ED |
6377295.664000000 |
6356094.667915204 |
300.8017000000000
|
Geodetic
Reference System 1980 (GRS 80) |
RF |
6378137.000000000 |
6356752.314140356 |
298.2572221010000
|
Helmert
1906 |
HE |
6378200.000000000 |
6356818.169627891 |
298.3000000000000
|
Hough
1960 |
HO |
6378270.000000000 |
6356794.343434343 |
297.0000000000000
|
Indonesian
1974 |
ID |
6378160.000000000 |
6356774.504085540 |
298.2470000000000
|
International
1924 |
IN |
6378388.000000000 |
6356911.946127946 |
297.0000000000000
|
Krassovsky
1940 |
KA |
6378245.000000000 |
6356863.018773047 |
298.3000000000000
|
Modified
Airy |
AM |
6377340.189000000 |
6356034.447938534 |
299.3249646000000
|
Modified
Fischer 1960 ( |
FA |
6378155.000000000 |
6356773.320482736 |
298.3000000000000
|
South
American 1969 |
SA |
6378160.000000000 |
6356774.719195306 |
298.2500000000000
|
World
Geodetic System 1972 (WGS 72) |
WD |
6378135.000000000 |
6356750.520016093 |
298.2600000000000
|
World
Geodetic System 1984 (WGS 84) |
WE |
6378137.000000000 |
6356752.314245179 |
298.2572235630000
|
NOTE: Semi-major and semi-minor axis values are in meters, while inverse flattening values are unitless. Values that end in multiple zeroes are defined (or measured) values, while other values are derived through calculation. With the exception of the CC ellipsoid, semi-minor axis values are calculated from the semi-major axis and inverse flattening values.
* Through adoption of a new yard to meter conversion factor in the referenced country.