Projection of the dwarf’s orbit in the x–y plane (upper panel) and in the x–z plane (lower panel). The cyan line indicates the orbital trajectory of the dwarf. The cyan point and cyan solid arrow indicate the dwarf’s position and velocity at t = 1.78 Gyr, respectively. The red square and red dashed arrow indicate those for the Sgr at the present day estimated by Vasiliev & Belokurov (2020). Purple dots show the distribution of the stellar particles stripped away from the dwarf. The surface density of the host disc and the solar position are displayed on the background. The dwarf follows a nearly polar orbit similar to the Sgr, leaving a stellar stream of stripped particles along its orbital path.