Motion of T Tau Sa and Sb in the reference frame of T Tau N. The path of Sa predicted by our orbit models is shown by the dotted line, the path of Sb by the dashed line, and the path of their center of mass by the dash-dotted line. The predicted positions on January 1 in every other year between 1997 and 2024 are marked by crosses. The observed positions of Sa are depicted by diamonds, those of Sb by triangles. Solid lines connect the observed and the predicted positions.