Subjects/Basic Physics/Gravitation/Total energy of a circular orbit10. GravitationTotal energy of a circular orbitIn 10. GravitationFormulaCopy LaTeXE=−2rGMmRelated formulasRelatedUniversal gravitational potential energyU(r)=−GrMmOpen formulaOpen in sectionRelatedCircular orbital velocityvorb=rGMOpen formulaOpen in section