Top left: total energy for an object at the location and radial velocity of Be 29, as a function of its proper motions. The white area indicates combinations of proper motions for which E> 0 (i.e. for which the object is not gravitationally bound to the Milky Way). The dashed line separates the regions for which the orbits are prograde and retrograde. Top right: expected birth radius as a function of proper motions. The blue dot indicates the proper motions found in MWSC. The cyan squares indicate the proper motions of DAML02. The triangle indicates the proper motions of VdP10. Other rows: same as previous, for Sau 1, Be 75, and Be 20.