It is a curve that is part of the Conics family. Mathematically, it is a closed curve that is obtained by cutting a cone with an inclined plane less than 90º with respect to the base, without cutting it.
The ellipse has the shape of a more or less flat oval and is the typical orbit of objects that revolve around a center of gravity as do, for example, planets with the Sun.
The planets of the solar system have elliptical orbits with a very small eccentricity, except Pluto.
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