Reference Ellipsoid List

Peter H. Dana

Department of Geography, University of Texas at Austin

Internet: pdana@mail.utexas.edu

3/22/95

Reference Ellipsoid, Equatorial Radius (a) , Reciprocal Flattening (1/f), Delta a, Delta f (*10^4)

Delta parameters are with respect to WGS-84 Parameters for conversion from WGS-84 to the specified datum

Parameter Delta a is the WGS-84 Equatorial radius minus the specified datum Equatorial radius in meters

Parameter Delta f is the WGS-84 flattening minus the specified datum flattening multiplied by 10^4

Source

Defense Mapping Agency. 1987b. DMA Technical Report: Supplement to Department of Defense World Geodetic System 1984 Technical Report. Part I and II. Washington, DC: Defense Mapping Agency

Airy, 6377563.396, 299.3249646, 573.604, 0.11960023

Australian National, 6378160.0, 298.25, -23.0, -0.00081204

Bessel 1841, 6377397.155, 299.1528128, 739.845, 0.10037483

Bessel 1841 (Nambia), 6377483.865, 299.1528128, 653.135, 0.10037483

Clarke 1866, 6378206.4, 294.9786982, -69.4, -0.37264639

Clarke 1880, 6378249.145, 293.465, -112.145, -0.54750714

Everest, 6377276.345, 300.8017, 860.655, 0.28361368

Fischer 1960 (Mercury), 6378166.0, 298.3, -29.0, 0.00480795

Fischer 1968, 6378150.0, 298.3, -13..0, 0.00480795

GRS 1967, 6378160.0, 298.247167427, -23.0, -0.00113048

GRS 1980, 6378137, 298.257222101, 0.0, -0.00000016

Helmert 1906, 6378200.0, 298.3, -63.0, 0.00480795

Hough, 6378270.0, 297.0, -133.0, -0.14192702

International, 6378388.0, 297.0, -251.0.0, -0.14192702

Krassovsky, 6378245.0, 298.3, -108.0, 0.00480795

Modified Airy, 6377340.189, 299.3249646, 796.811, 0.11960023

Modified Everest, 6377304.063, 300.8017, 832.937, 0.28361368

Modified Fischer 1960, 6378155.0, 298.3, -18.0, 0.00480795

South American 1969, 6378160.0, 298.25, -23.0, -0.00081204

WGS 60, 6378165.0, 298.3, -28.0, 0.00480795

WGS 66, 6378145.0, 298.25, -8.0, -0.00081204

WGS-72, 6378135.0, 298.26, 2.0, 0.0003121057

WGS-84, 6378137.0, 298.257223563, 0.0, 0.0