Time evolution of the semi-major axis (top) and eccentricity (bottom) of a 30   M_Earth planet in a fully radiative disc. The eccentricity shrinks in the same fashion as for a 20   M_Earth planet, but about 50% faster. The semi-major axis increases also in the same trend, but the outward migration starts about 50% later than in the 20   M_Earth case. The outward migration is then stopped at a radius slightly smaller than for a 20   M_Earth planet.