Relative separation and position angle of HD 157338 B across three epochs of data. The 2006 data corresponds to VLT/NACO data as reported by Montagnier (2008), and the two 2021 data points correspond to the VLT/SPHERE data presented in this paper. The second epoch of direct imaging observations over a long baseline is able to constrain the orbital parameters significantly, as shown in the residual plots in the corresponding bottom panels.