Dependence of D _off and ρ _max on the width σ of the Gaussian density smoothing kernel. The gravitational softening scale _soft = 124 pc for Eris and ErisDark is indicated with the dotted line. In the dissipationless simulations (ErisDark, VL2, and GHalo) the DM offset remains well below _soft for all σ. In Eris the offset is larger than _soft out to σ = 260 pc (about 2 _soft). The maximum density is about a factor of two higher in Eris than in ErisDark, and depends only mildly on σ for σ > _soft. ρ _max is larger in VL2 due to its higher halo mass.