Positions of BN and sources I, n, and x for the epoch of 2015 (squares without error bars). Arrows indicate the direction and PM displacement for 300 yr in the rest frame of the ONC. The dashed and dotted lines illustrate the projected paths back to 1535 and the uncertainties, respectively. The error bars represent the estimated positions for the epoch of 1535. The astrometry and PM of source I were adopted from Rodríguez et al. (2017).