# Does the earth have a height? If so, what is it?

Mar 26, 2016

For the solar system, there is an invariable plane and the Earth's orbital plane is inclined to this plane by about ${1}^{o}$. So the height/depth about this plane is utmost $\sin {1}^{o}$ AU., nearly.
The range for the normal distance of the Earth's center from the invariable plane is $\pm \left(a p h e l i o n\right) \sin \left(\alpha\right) , \alpha$ = inclination of the ecliptic to the invariable plane. This is approximately $\pm \sin {1}^{o}$ AU