Mass-radius diagram showing the positions of TOI-2427 b (red dot) along with all exoplanets alongside all exoplanets with mass and radius measurements known to within 30% relative precision or better (yellow points with error bars; source: NASA Exoplanet Archive), and solar system planets (colored dots). The light-red region denotes the minimum mass of TOI-2427 c, and the darker red region indicates its statistically inferred radius range from Forecaster when assuming coplanar orbits with planet b. Composition models (solid and dashed lines) are taken from Zeng et al. (2016).