Ellipsoid Name

Semi Major

Semi Minor

Flattening

Inverse Flattening

Applied Physics Lab. (APL)

6378144.000

6356761.643

0.006693645

298.2900285

Bouguer-Maupertius 1738

6397300.000

6367792.158

0.009203817

216.7999922

Clarke 1858

6378293.645

6356617.939

0.006785161

294.2600249

Delambre

6375653.000

6356564.218

0.005979060

333.9999913

Everest 1967

6377298.565

6356097.558

0.006637847

300.8016832

Fisher 1 (Mercury 1960)

6378166.000

6356784.282

0.006693422

298.2999832

Fisher 2 (Mercury)

6378150.000

6356768.336

0.006693422

298.2999832

Hayford 1906

6378283.000

6356864.991

0.006704641

297.7999928

Heiskanen 1926

6378397.000

6356920.916

0.006722670

297.0000010

Helmert 1907

6378200.000

6356818.168

0.006693422

298.2999832

Hough 1956

6378270.000

6356784.376

0.006725785

296.8622152

Jeffreys 1948

6378099.000

6356631.148

0.006720411

297.1000033

Kaula 1964

6378160.000

6356774.719

0.006694542

298.2499935

Krasovsky 1936

6378210.000

6356849.619

0.006686708

298.6000044

Krasovsky 1942

6378245.000

6356863.018

0.006693422

298.2999832

Ledersteger 1951

6378298.000

6356822.249

0.006722670

297.0000010

Mod. Bessel (Norge)

6377492.018

6356173.509

0.006674372

299.1528232

Pratt 1863

6378245.000

6356645.795

0.006761306

295.2999928

Ref. Ellipsoid 1967

6378160.000

6356774.719

0.006694542

298.2499935

Spheroid for NWL8D&NWL10D

6378145.000

6356759.769

0.006694542

298.2499935

Spheroid for NWL9D Datum

6378145.000

6356759.769

0.006694542

298.2499935

Spheroid for SAO SEIII

6378140.400

6356755.616

0.006694407

298.2560182

Spheroid for SAO-C5

6378165.000

6356779.702

0.006694542

298.2499935

Spheroid for SAO-C6

6378155.000

6356769.735

0.006694542

298.2499935

Spheroid for SAO-C7

6378142.000

6356757.137

0.006694430

298.2549917

Spheroid for WGS72 Datum

6378135.000

6356750.519

0.006694318

298.2599901

Struve

6378298.300

6356657.145

0.006774359

294.7300349

Veis 1964

6378169.000

6356783.689

0.006694542

298.2499935

Walbeck 1819

6376896.000

6355834.847

0.006594548

302.7800043

WD Spheriod

6378300.000

6356751.690

0.006745343

296.0000139