Most likely orbital poles (directions of angular momenta) represented by the large circles and their uncertainties represented by small circles in the corresponding colours for the proposed Crater-Leo objects, based on the proper motions discussed in Sect. 2.2. The uncertainties in orbital pole directions are obtained by Monte Carlo sampling of the proper motion and distance uncertainties (1000 realisations). The assumed VPOS pole is represented by the grey plus symbol and the opposite normal direction by the minus symbol, with the black circles containing 10% of the sky around them. The proposed group poles are represented by the bold black ‘x’ for the negative circulation, h−, and by the plus symbol for the positive circulation h+.