Oblate spheroid
= Oblate spheroid
An <oblate spheroid> is the flattened case of a <spheroid>, with polar semiaxis no greater than its equatorial semiaxis.
An <oblate spheroid> is obtained by rotating an ellipse about its shorter axis. If its equatorial semiaxis is one and its polar semiaxis is $q\leq1$, then $q$ is its intrinsic axis ratio.