O lenei paneta o le itiiti ifo 1.35 M<unk>, po o le 1.35 taimi le vaega tele o le Lalolagi (e uiga i 8.06×1024 kg). b lenei e teisi sili atu nai lo le tutusa ma latalata Proxima Centauri b, ma se vaega tele o 1.27 M<unk>. O le vaega maualalo o Ross 128 b implies that it is most likely a rocky Earth-sized planet with a solid surface. However, its radius, and therefore its density, is not known as no transits of this planet have been observed. Ross 128 b would be 0.5 R<unk> (Earth radii) for a pure iron-composition and 3.0 R<unk> for a pure hydrogen-helium composition, both degrees plausible. Mo se paneta e pei o le Lalolagi, o le a itiiti ifo i le 1.35 M<unk>, po o le 1.35 taimi le vaega tele o le Lalolagi (e uiga i 8.06×1024 kg). b Faatasi ai ma le maualuga o le mamafa o le lalolagi ma le latalata ane i le lalolagi o le 128 °C, o le maualuga o le vevela o le lalolagi o le a silia ma le 128 °C.
e tolu ni tapulaa o le albedo