A Medium Earth orbit is typically which shape?

A Medium Earth orbit is typically which shape?

• A. Circular
• B. Elliptical
• C. Hyperbolic
• D. Parabolic

Answer: (A)

Orbits are conic sections defined by eccentricity, and a circular orbit is the special case where the eccentricity is zero, so the satellite stays at a constant distance from Earth and moves at constant speed. Medium Earth Orbits, used by navigation systems like GPS, are designed to be nearly circular because a steady altitude provides uniform coverage, consistent timing, and straightforward ground tracking. Elliptical paths would mean the satellite’s altitude and speed vary, complicating coverage patterns, while hyperbolic and parabolic paths are unbound trajectories that would not maintain a stable orbit around Earth. So, the typical shape for a Medium Earth orbit is circular.

Orbits are conic sections defined by eccentricity, and a circular orbit is the special case where the eccentricity is zero, so the satellite stays at a constant distance from Earth and moves at constant speed. Medium Earth Orbits, used by navigation systems like GPS, are designed to be nearly circular because a steady altitude provides uniform coverage, consistent timing, and straightforward ground tracking. Elliptical paths would mean the satellite’s altitude and speed vary, complicating coverage patterns, while hyperbolic and parabolic paths are unbound trajectories that would not maintain a stable orbit around Earth. So, the typical shape for a Medium Earth orbit is circular.