Marginalized probability in the M_halo − M_gal plane. The best model (black dot) is at M_halo = 7.2 × 10¹⁰ M_⊙ and M_gal = 5.5 × 10¹⁰ M_⊙. It has a likelihood value of ln(ℒ) = 0.2642. The marginalized probability favors models with a lower halo mass. The ellipticity of the best model is e = 0.4, and the orientation is −56° anticlockwise with respect to north. (Shift X = −19 and Shift Y = +20 3 mas pixels or 0.23 kpc NE from the center of the galaxy at (−9,0)).