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$\mu_E$ = GM of the Earth.
$\mu_M$ = GM of the Moon.
$r_E$ = low Earth orbit radius.
$r_M$ = low MarsMoon orbit radius.
$a_M$ = semi-major axis (mean radius) of Moon orbit around Earth.

$\mu_E$ = GM of the Earth.
$\mu_M$ = GM of the Moon.
$r_E$ = low Earth orbit radius.
$r_M$ = low Mars orbit radius.
$a_M$ = semi-major axis (mean radius) of Moon orbit around Earth.

$\mu_E$ = GM of the Earth.
$\mu_M$ = GM of the Moon.
$r_E$ = low Earth orbit radius.
$r_M$ = low Moon orbit radius.
$a_M$ = semi-major axis (mean radius) of Moon orbit around Earth.

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This is a direct transfer that can complete in days. If you're willing to take a few months, there are lower $\Delta V$ paths that go through generalized Lagrange pointsthere are lower $\Delta V$ paths that go through generalized Lagrange points. You can save on the order of $0.1\,\mathrm{km\over s}$.

This is a direct transfer that can complete in days. If you're willing to take a few months, there are lower $\Delta V$ paths that go through generalized Lagrange points. You can save on the order of $0.1\,\mathrm{km\over s}$.

This is a direct transfer that can complete in days. If you're willing to take a few months, there are lower $\Delta V$ paths that go through generalized Lagrange points. You can save on the order of $0.1\,\mathrm{km\over s}$.

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Pericynthion is the point in the spacecraft's trajectory that is nearest the Moon. For a free return trajectory, the altitude at pericynthion is typically about 100 to 1,500 nautical miles (185 to 2,800 km) - — see diagram. The pericynthion altitude in this example is 1,446 kilometers.

Pericynthion is the point in the spacecraft's trajectory that is nearest the Moon. For a free return trajectory, the altitude at pericynthion is typically about 100 to 1,500 nautical miles (185 to 2,800 km) - see diagram. The pericynthion altitude in this example is 1,446 kilometers.

Pericynthion is the point in the spacecraft's trajectory that is nearest the Moon. For a free return trajectory, the altitude at pericynthion is typically about 100 to 1,500 nautical miles (185 to 2,800 km) — see diagram. The pericynthion altitude in this example is 1,446 kilometers.

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