Mass–radius and insolation–radius diagrams of observed exoplanets. Left: mass–radius diagram of exoplanets with accurate mass and radius determination from Otegi et al. (2020a). Also shown are the composition lines for Earth-like planets and pure water subjected to a stellar radiation of F∕F_⊕ = 230 (similar to that of TOI 1062 b). Right: radius against insolation flux for known exoplanets from the NASA Exoplanet Archive. The colormap indicates the point density. TOI 1062 b is represented by a blue star.