Proper motion of the ten stars reported in Table B.1. The cyan square represents the average proper motion for the on-cloud Coronet cluster obtained using Gaia DR2 data (Galli et al. 2020). The blue star is the calculated apparent proper motion of Τ CrA after correcting the long term proper motion for the systematic offset. In orange the direction of the systematic offset of the proper motion due to the different coordinate system.