Surface stellar mass density profile of Nube (blue dots) fitted with a projected soliton shape with a core radius of r_c = 6.6 ± 0.4 kpc (see text for details). The soliton best fit and its errors are indicated by the red line and the red region. The agreement is remarkable when taking into account that the only free parameter is essentially the core radius. The black dashed line is a projected NFW profile for comparison.