Proper motion of the candidate assuming it is free-floating when the barycentre is on the primary star. The blue populations are the stars from 0 to 50 kpc within 2σ magnitude of the candidate generated by the Besançon galaxy model. The 1 and 2σ contours are shown by the dashed blue circles. The red populations are the posterior distribution of the candidate’s proper motion with black circles showing the 1 and 2σ range. The purple point is the proper motion of the primary star reported in Gaia and the errorbar is smaller than the marker size. The green points are Sco-Cen candidate members within 20 angular degrees of the primary star on the sky.