🌐EnglishEnglishDeutschEspañolFrançaisPortuguêsالعربية한국어中文EntityQ1142411· pop 12· linked from 53 articlesvis-viva equationphysical law that describes the motion of objects in a Keplerian orbit around a bodyConnectionsorbital mechanicsEntitysemi-axisEntityCategoriesConservation lawsEquations of astronomyOrbits