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eccentricity comparison table
Subject is an instance of is a kind of has symbol has definition
orbital element orbital quantity One of seven quantities that must be established from observations in order to define the size, shape, and orientation of an orbit in space.
eccentricityorbital element eThe amount by which the elliptical orbit deviates from circularity: e = c/a, where c is the distance from the center to a focus and a is the semimajor axis.

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