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An artificial satellite is in an ellipti...

An artificial satellite is in an elliptical orbit around the earth with aphelion of `6R` and perihelion of `2R` where `R` is radius of the earth `=6400 km`. Calculate the eccentricity of the elliptical orbit.

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We know that
Perigee `(r_(p))=a(1-e)=2R`…….1
apogee `(r_(a))=a(1+e)=6R`…………..2
Solving 1 and 2 eccentricit (e)=0.5
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