Oblate spheroid equation(c<a)

Description

A spheroid, or ellipsoid of revolution is a quadric surface obtained by rotating an ellipse about one of its principal axes; in other words, an ellipsoid with two equal semi-diameters.An oblate spheroid is a rotationally symmetric ellipsoid having a polar axis shorter than the diameter of the equatorial circle whose plane bisects it (like a lentil).

Related formulas

Variables

xX-coordinate of the point (dimensionless)
aSemi-major axis ( the equatorial radius of the spheroid) (dimensionless)
yY-Coordinate of the point (ordinate) (dimensionless)
bSemi-minor axis (dimensionless)
zZ-coordinate of the point (dimensionless)
cDistance from centre to pole along the symmetry axis (c<a) (dimensionless)