User's Guide and Reference

Supported spheroids

Table 59.
Supported spheroids

Name	Semi-major axis	Inverse flattening
Airy	6377563.396	299.3249646
Modified Airy	6377340.189	299.3249646
Australian	6378160	298.25
Bessel	6377397.155	299.1528128
Modified Bessel	6377492.018	299.1528128
Bessel (Namibia)	6377483.865	299.1528128
Clarke 1866	6378206.4	294.9786982
Clarke 1866 (Michigan)	6378693.704	294.978684677
Clarke 1880	6378249.145	293.465
Clarke 1880 (Arc)	6378249.145	293.466307656
Clarke 1880 (Benoit)	6378300.79	293.466234571
Clarke 1880 (IGN)	6378249.2	293.46602
Clarke 1880 (RGS)	6378249.145	293.465
Clarke 1880 (SGA)	6378249.2	293.46598
Everest 1830	6377276.345	300.8017
Everest 1975	6377301.243	300.8017
Everest (Sarawak and Sabah)	6377298.556	300.8017
Modified Everest 1948	6377304.063	300.8017
Fischer 1960	6378166	298.3
Fischer 1968	6378150	298.3
Modified Fischer (1960)	6378155	298.3
GEM10C	6378137	298.257222101
GRS 1980	6378137	298.257222101
Hayford 1909	6378388	297.0
Helmert 1906	6378200	298.3
Hough	6378270	297.0
International 1909	6378388	297.0
International 1924	6378388	297.0
New International 1967	6378157.5	298.2496
Krasovsky	6378245	298.3
Mercury 1960	6378166	298.3
Modified Mercury 1968	6378150	298.3
NWL9D	6378145	298.25
OSU_86F	6378136.2	298.25722
OSU_91A	6378136.3	298.25722
Plessis 1817	6376523	308.64
South American 1969	6378160	298.25
Southeast Asia	6378155	298.3
Sphere (radius = 1.0)	1	0
Sphere (radius = 6371000 m)	6371000	0
Sphere (radius =6370997 m)	6370997	0
Struve 1860	6378297	294.73
Walbeck	6376896	302.78
War Office	6378300.583	296
WGS 1960	6378165	298.3
WGS 1966	6378145	298.25
WGS 1972	6378135	298.26
WGS 1984	6378137	298.257223563