Delta-V Diagram

image/svg+xml MOON EARTH MARS SUN PHOBOS DEIMOS Lunar orbit L1 GTO Earth C3 = 0 Mars C3 = 0 Mars transfer LEO Phobos transfer Deimos transfer GEO 0.7 4.1 0.9 0.2 0.5 0.7 0.9 0.6 0.6 1.4 1.6 9.3 - 10 30 2.5 0.3 0.7 3.8 3.8 1.6 1.9 Low Mars orbit MARS/MOON/EARTHDELTA-V Source: Wikipedia - Not all possible routes are shown. Delta V (Delta = change, V = velocity: speed + direction) is related to the energy required to transfer from one orbit to another. Delta-V (km/s) Optional Aerobrake Orbital Location Key: