Answer:
The orbital eccentricity (or eccentricity) is a measure of how much an elliptical orbit is 'squashed'. ... Elliptical orbits with increasing eccentricity from e=0 (a circle) to e=0.95. For a fixed value of the semi-major axis, as the eccentricity increases, both the semi-minor axis and perihelion distance decrease. or
It is probably used because the more eccentric an ellipse is, the more its foci are 'off the center' of the ellipse. ... These orbits turned out to be ellipses with the sun at one of the focus points. In this context, the eccentricity of the ellipse indicates how far from circular these orbits are.
Step-by-step explanation:
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