For Gliese 876 d, calculations range from 9,200 km (1.4 Earth radii) for a rocky planet and very large iron core to 12,500 km (2.0 Earth radii) for a watery and icy planet. Within this range of radii the super-Earth Gliese 876 d would have a surface gravity between 1.9g and 3.3g (19 and 32 m/s2). However, this planet is not known to transit its host star.
For Gliese 876 d, calculations suggest a radius between 9,200 km and 12,500 km, encompassing possibilities for a rocky or icy planet.