Predefined Ellipsoids

This table lists the predefined ellipsoids that can be used in coordinate system and datum definitions. Note that each coordinate system definition must specify either a datum or ellipsoid.

Recently added entries appear with a grey background.

Ellipsoid Name

Description

APL4-5

A.P.L./4.5

AIRY30

Airy – 1830

AIRY49

Airy – 1848

AIRY-MOD

Airy – Modified

ANS66

Australian National Spheroid of 1966

AT77

Average Terrestrial System 1977 – Canada

ATS77

Average Terrestrial System 1977 – Canada (same as AT77)

AUSSIE52

Australian — AIG – 1952

AUSSIE

Australian – 1965

AUSTRALIAN165

Australian 165 (1962)

BESL-MOD

Bessel Modified

BESL-NMB

Bessel – Namibia

BeslNmb-GLM

Bessel Namibia (GLM), EPSG, V6.3, 7046 [ISO Project Team 19127]

BESL-TRI

Bessel Triangulation – Sweden

BESSEL

Bessel – 1841

BESSEL-NORWAY

Norwegian National Ellipsoid (NGO)

BORNEO

Borneo, 4 mm larger than EVRST-TM

BPCNC

Sphere having volume equal to International ellipsoid

Clarke1866/IntnlFt

Clarke 1880 (international foot), EPSG 6.11.2

Clarke66AuthalicSphere

Clarke 1866 Authalic Sphere, ESPG 6.11.2

CLRK22

Clark3 1922 – IGN

CLRK58

Clarke – 1858

CLRK66

Clarke – 1866

CLRK80

Clarke – 1880

Clrk80-Strasser

Clarke 1880, EPSG, V6.3, 7034

CLRK85

Clarke – 1885

CLRK-ARC

Clark ARC

CLRK-IGN

Institut Geographique National (France), Clarke 1880

CLRK-PAl

Clarke Palestine

CLRK-RGS

Clarke 1880 – RGS

CLRKS

Clarke – 1866, Spherical

DANEMARK

Danemark

DELA1810

Delambre – 1810

DELA-MOD

Delambre Modified – Hydro

DELAMBRE1800

Delambre – 1800

Everest1969/RSO

Everest 1830 (RSO 1969), EPSG 6.11.2

Everest1830

Everest (1830 Definition), EPSG, V6.3, 7042

Everest1830/67

Everest 1830 (1967 Definition), ESPG 6.11.2

Everest1830Def62

Everest 1830 (1962 Definition), EPSG, V6.3, 7044

Everest1830Def75

Everest 1830 (1975 Definition), EPSG, V6.3, 7045

EVEREST

Everest Indian – 1830

EVERESTPAKISTAN      

Ellipsoid for Everest Pakistan

EVRST-IM

Everest Imperial – 1830

EVRST_MD

Everest – Modified

EVRST-TM

Everest – Timbalai (same as Everest Imperial)

FSHR1960

Fischer – 1960 (Mercury)

FSHR60MOD

Modified Fischer – 1960 (South Asia)

FSHR1968

Fischer – 1968

GEM-10C

GEM 10C, EPSG, V6.3, 7031

Ghana-WO

Ghana – Labelled “War Office”, given in feet, assumed IFOOT

GRS1967

Geodetic Reference System – 1967

GRS1980

Geodetic Reference System of 1980

GRS80SphereAuthalic

GRS 1980 Authalic Sphere, EPSG, V6.3, 7048

HAYFORD

Hayford – 1924 (a.k.a. 1909), same as International 1924

HAYFORD1906

Hayford – 1906

HEIS-29

Heiskanen – 1929

HEISKANEN1926

Heiskanen – 1926

HELMERT1907

Helmert – 1907

HLMRT06

Helmert – 1906 (a.k.a. 1907)

HOLLAND

Holland

HOUGH

Hough

IndonesianNtl

Indonesian National Spheroid, EPSG, V6.3, 7021

INTNL

International 1924

IUGG-67

IUGG Reference Ellipsoid, 1967

JEFF-48

Jeffreys – 1948

KAULA1964

Kaula – 1964

KRASOV

Krassovsky – 1940/1948

KRASOVSKY1936

Krasovsky – 1936

LEDERSTEGER1951

Ledersteger – 1951

MICHIGAN

Michigan — based on Clarke 1866 + 800 feet

NWL-9D

NWL-9D

NZGD49

New Zealand Geodetic Datum of 1949 (also known as International 1924)

OSU86F

OSU86F, EPSG, V6.3, 7032

OSU91A

OSU91A, EPSG, V6.3, 7033

PLESSIS

Plessis – 1817

PZ-90

PZ-90, EPSG 6.11.2

PRATT1863

Pratt – 1863

SA1969

South American 1969

SPHERE

Sphere of radius 6370997

SPHERE-1

Sphere of radius 6371000.0

STRU1860

Struve, 1860

SVANBERG

Svanberg

UNITE

Unit ellipsoid, testing only. Eccentricity same as Clarke 66

UNITS

Unit sphere, testing only

UNIT3

3.0 Unit sphere, testing only

T-BPCNC

Sphere for testing Bipolar Oblique Conformal Conic

VEIS1964

Veis (1964)

WALB

Walbeck

WAR-OFC

War Office, McCaw

WarOffice

War Office, EPSG, V6.3, 7029

WGS60

World Geodetic System of 1960

WGS66

World Geodetic System of 1966 / NWL 8D

WGS67

World Geodetic System of 1967, Lucerne

WGS72

World Geodetic System of 1972

WGS84

World Geodetic System of 1984

Xian1980

Xian 1980, EPSG, V6.3, 7049