EntityQ2268240· pop 22· linked from 520 articleselliptic orbitSign in to saveKepler orbit with an eccentricity of less than 1ConnectionsapsisEntityfree fallEntityorbital mechanicsEntitytwo-body problemEntitysemi-axisEntitySpecific relative angular momentumEntitysphere of influenceEntitynear-equatorial orbitEntityIsaac NewtonPersonSolar SystemEntityplanetEntitycometEntityJohannes KeplerEntityasteroidEntityInternational Standard Book NumberEntitydwarf planetEntityErisEntityorbitEntitydigital object identifierEntityHalley's CometEntityCategoriesOrbits