  For quantum systems, we expect to see the classical behaviour at the limit of
large quantum numbers. Hence, we apply Bohmian approach for describing the
evolution of Earth around the Sun. We obtain possible trajectories of the Earth
system with different initial conditions which converge to a certain stable
orbit, known as the Kepler orbit, after a given time. The trajectories are
resulted from the guiding equation $p=\nabla S$ in the Bohmian mechanics, which
relates the momentum of the system to the phase part of the wave function.
Except at some special situations, Bohmian trajectories are not Newtonian in
character. We show that the classic behaviour of the Earth can be interpreted
as the consequence of the guiding equation at the limit of large quantum
numbers.
