Type II emission centroids and their reconstruction in 3D. (a) Radio source centroids at 12:24:57 UT, where the colour bar denotes the observing frequency in MHz, overlaid on a GOES/SUVI 195 Å image in helioprojective coordinates. (b) Radio source centroids in 3D together with a reconstruction of the CME shock (pink wireframe) and open field lines connecting to Solar Orbiter (blue) and PSP (purple) in Stonyhurst heliographic coordinates.