Upper panel: position of the dwarf as a function of time. Blue solid, orange dashed, and green dotted lines show $r=\sqrt{x^2+y^2+z^2},R=\sqrt{x^2+y^2}$, and z, respectively. Lower panel: mass of the dwarf as a function of time. Blue solid and orange dashed lines show the total mass and stellar mass enclosed within 5 kpc. The Green dotted line shows the stellar mass fraction. The red vertical line indicates the time of t = 1.78 Gyr when the dwarf’s position is close to the present-day position of the Sgr. The final total mass is consistent with the presentday Sgr mass.