Assertion: ellipsoid's axis | /r/HasProperty | equatorial radius
Facets:
Source sentences:
text: The difference between the semi-major axis (equatorial radius) of the Hayford ellipsoid and that of the modern WGS84 ellipsoid is 251 m; for Helmert's ellipsoid it is only 63 m.
text: The ellipsoid is defined by the equatorial axis a and the polar axis b; their difference is about 21 km, or 0.335%.
text: For one thing, the most southerly point on the minor axis (the South Pole) is closer to the major axis (the equator) than is the most northerly point on the minor axis (the North Pole).
text: An ellipsoid can be mathematically described by four parameters: semi-major axis (the equatorial radius), semi-minor axis (the polar radius), the degree of flattening, and the ellipsoid's position with respect to the center of the Earth.
text: The reference ellipsoid is usually defined by its semi-major axis (equatorial radius) a {\displaystyle a} and either its semi-minor axis