Gravity is only about 1.25 g, according to Wikipedia. Density matters. The earth...

OkayPhysicist · on Sept 11, 2023

Comparing rocky planets, density doesn't really matter at all. The range of possible densities for rocky planets is tightly constrained. What matters is the fact that surface gravity scales sub-linearly with regards to a planets mass.

  M = 4/3*pi*r^3*d
  r = (4/3*pi*d/M)^(-1/3)
  a = GM/r^2
  a = GM(4/3*pi*d/M)^(2/3)
  a = G(4/3*pi*d)^(2/3) * M^(1/3)

wheels · on Sept 12, 2023

We know that it's not (primarily) rocky though because the radius is 2.6 that of earth, but the mass is only 8 times. So it's about about 46% as dense as earth.