A polar orbit is an orbit in which a satellite passes above or nearly above both poles of the planet (or other celestial body) it is orbiting on each revolution. It therefore has an inclination of (or very close to) 90 degrees to the equator. Except in the special case of a polar geosynchronous orbit, a satellite in a polar orbit will pass over the equator at a different longitude on each of its orbits.
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An orbit for which the angle of inclination is 90. (188 ) Note: A satellite in polar orbit will pass over both the north and south geographic poles once per orbit.
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