SR2 Planet Information

So... I guess I'm posting this.
SoI radius(craft measured)
Droo: 95,750,000 m
Cylero: 56,970,000
Note: These differ from the calculated values of 92,428,228 m and 58,104,197 m respectively
Note2: How I measured the SoI radius: r = SemiMajorAxis(Droo) * (Droo Mass/Solar Mass)^0.4
Note3: Mass: m =accerlation due to gravity * (radius^2)/G(6.67*10^-11)