Satellite orbit :
\The apogee(the point in orbit farthest from earth) and the perigee (the point in orbit closest to earth) of an elliptical orbit of an earth satellite are given by
and
, then the eccentricity of the orbit is
.
The highest point above the earth is
.
The lowest point closest to the earth is
.
Find the eccentricity of the orbit.
\The eccentricity of the orbit is
.
Substitute
and
.


.
Therefore, the eccentricity of the orbit is
.
The eccentricity of the orbit is
.