Notes. The stellar-centric distances of the termination shock R_TS, the astropause R_AP, and the bow shock R_BS are from the model described here. The stellar wind parameters are taken from Henrichs & Sudnik (2013). As interstellar temperature we use the diffuse ionized medium temperature derived by Reynolds et al. (1999). The density value is estimated from integrating the HI slice at the position and the velocities expected for the distance of λ Cephei based on data of the Canadian Galactic Plane Survey (Taylor et al. 2003).