 Minor planets at the Lagrangian points of planets other than Jupiter may be called Lagrangian minor planets.Whether or not a system of star, planet, and trojan is stable depends on how large the perturbations are to which it is subject.If, for example, the planet is the mass of Earth, and there is also a Jupiter-mass object orbiting that star, the trojan's orbit would be much less stable than if the second planet had the mass of Pluto.