Up to now the majority of the known exoplanetary systems consists of a hosting star and a Jupiter-like giant planet. In certain cases additional massive planets have also been discovered. The main detection method of exoplanets is based on the Doppler-shift of the hosting star's spectral lines. The detection of Earth-like planets by using the above method seems to be far away. We have to wait for the planned space missions like COROT, which should be able to detect planets of several Earth masses, or Kepler, whose main target is to detect Earth-sized planets. In our investigation we compiled a catalogue of the phase space of exoplanetary systems. The structure of the phase space of a given system depends on only the mass ratio between the Jupiter-like planet and the central star. Providing the regions of stable and unstable motions, this catalogue could help observers to determine the orbital elements of possible Earth-like planets.