Obs. : 2008-01-13 Planet Ly alpha Mercury 3.673e+11 Venus 3.633e+11 Earth 3.671e+11 Mars 3.593e+11 Jupiter 3.636e+11 Saturn 3.690e+11 Uranus 3.617e+11 Neptune 3.673e+11 Pluto 3.636e+11