Projection of WASP-121 in the plane of sky for the best-fit scenario where the north pole of the star is visible. The stellar spin axis is displayed as a black arrow extending from the north pole. The stellar equator is represented as a black line, solid when visible and dashed when hidden from view. The stellar disk is colored as a function of its RV field. The normal to the orbital plane is shown as a green arrow, and the orbital trajectory is displayed as a green curve. The black disk isWASP-121b, to scale.