Fig. 4

Map of Phobos. Mean Earth to Phobos visibility hours per day averaged over the period (1 Jan 2030 – 18 Nov 2031). The shaded area represents locations where any single day in that period contains less than 6 hours visibility between Phobos and Earth, according to our data relay requirement in Table 1. The Mars-facing longitude is at 0° (360°), while the anti-Mars point is at 180° longitude