</h4>
                        <p>The eccentricity (comprise between 0==circular, and 1).</p>
                      </div>
                      <div class="slightly-smaller">
                        <a href="https://github.com/onekiloparsec/SwiftAA/tree/2.2.4/Sources/SwiftAA/PlanetaryOrbits.swift#L28">Show on GitHub</a>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code