EntityQ809690· pop 30· linked from 328 articlesbarycenterSign in to savecenter of mass of two or more bodies that are orbiting each other, or the point around which they both or all orbitConnectionsapsisEntityorbital eccentricityEntityorbital mechanicsEntitysemi-axisEntityVictor BrumbergEntityEarthConceptSunConceptMoonConceptastronomyEntitySolar SystemEntityMercuryEntityJupiterEntitySaturnEntityPlutoEntitymassEntityInternational Standard Book NumberEntityAncient GreekEntitynatural satelliteEntitykilometreEntityclassical mechanicsEntityCategoriesAstronomical coordinate systemsCelestial mechanicsGeometric centersMass