Population of known giant exoplanets (M sin i > 0.3 M_J) with either a true mass or a M sin i measurement in planet mass–period (upper left) and planet mass–stellar mass (upper right) and eccentricity–period (lower panel) space using data from the NASA Exoplanet Archive. The full giant-planet population is shown in grey, while planets around stars with similar chemical composition and age as the stars in M 67 (−0.1 < Fe/H < 0.1 and 3.8 < age < 4.5) are shown in blue. The six planets discovered in M 67 are overplotted in black.