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No, it is an ellipse. It is not a very eccentric ellipse, which means that it is not very far from being a circle. A circle has an eccentricity of 0. An eccentricity of 1 means the object is in a parabolic escape path and there is no return of the object. Hyperbolas have eccentricities greater than 1. The earth's eccentricity is 0.0167.

Since we are roughly 93 million miles from the sun, even the small eccentricity of our orbit means that our distance from the sun changes by over 3 million miles, about 5 million km, from perihelion to aphelion.

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12y ago

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