Top: HE γ-ray light curve of PKS 1510–089 in 24 h bins. Grey arrows are upper limits (95% confidence level for TS < 9.0), and the grey dashed line indicates the 11-year average. Bottom: separation of knot K16 (red) from the core A0 (black line) according to the 43 GHz maps. The red line approximates the motion of K16 with the 1σ uncertainty given by the shaded region. The same is shown for A1 (blue) and A2 (magenta). In both panels the green dashed line indicates the time of the VHE γ-ray flare.