Source: wikibot/angular-eccentricity
= Angular eccentricity
{wiki=Angular_eccentricity}
Angular eccentricity, often used in the context of conic sections, refers to a measure of how much an orbit deviates from being circular. In the case of an ellipse, the eccentricity (denoted as \\( e \\)) is defined mathematically as the ratio of the distance between the foci of the ellipse to the length of its major axis.