- Altitude is given above Fischer Ellipsoid.

E.g. at time 400s: EPO altitude 172km = 6545km geocentric distance = 167km above a spherical Earth of radius 6378.1 km

- Gravity (total acceleration) is calculated according to ${\displaystyle G={\frac {|\mathbf {a} _{\mathbf {total} }|}{g_{0}}}={\frac {|\mathbf {g(\mathbf {r} )} -\mathbf {a} _{\mathbf {SF} }|}{g_{0}}}}$

where ${\displaystyle \mathbf {g(\mathbf {r} )} }$ = gravity in geocentric distance ${\displaystyle \mathbf {r} }$, ${\displaystyle \mathbf {a} _{\mathbf {SF} }}$ = inertial (space fixed) acceleration, ${\displaystyle {g_{0}}}$ = standard gravity on surface