18 fix cut and paste error edited Mar 9 '14 at 3:45 Mark Adler 52.3k33 gold badges139139 silver badges222222 bronze badges $$\mu_E$$ = 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. 17 fix link edited Dec 27 '13 at 21:37 Mark Adler 52.3k33 gold badges139139 silver badges222222 bronze badges 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 $$0.1\,\mathrm{km\over s}$$. 16 added 5 characters in body edited Dec 27 '13 at 14:44 ЯegDwight 10533 bronze badges 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. 15 more from that link edited Oct 6 '13 at 17:30 AlanSE 10.9k11 gold badge4040 silver badges118118 bronze badges 14 edited body edited Oct 6 '13 at 0:21 Mark Adler 52.3k33 gold badges139139 silver badges222222 bronze badges 13 added 13 characters in body edited Oct 5 '13 at 23:40 Mark Adler 52.3k33 gold badges139139 silver badges222222 bronze badges 12 added 228 characters in body edited Oct 5 '13 at 20:52 Mark Adler 52.3k33 gold badges139139 silver badges222222 bronze badges 11 added 57 characters in body; Post Made Community Wiki edited Oct 5 '13 at 20:41 Mark Adler 52.3k33 gold badges139139 silver badges222222 bronze badges 10 added 150 characters in body edited Oct 5 '13 at 20:32 Mark Adler 52.3k33 gold badges139139 silver badges222222 bronze badges 9 added 163 characters in body edited Oct 5 '13 at 20:24 Mark Adler 52.3k33 gold badges139139 silver badges222222 bronze badges Post Undeleted by Mark Adler occurred Oct 5 '13 at 20:20 8 added 34 characters in body edited Oct 5 '13 at 20:08 Mark Adler 52.3k33 gold badges139139 silver badges222222 bronze badges 7 added 159 characters in body edited Oct 5 '13 at 19:57 Mark Adler 52.3k33 gold badges139139 silver badges222222 bronze badges 6 added 159 characters in body edited Oct 5 '13 at 19:49 Mark Adler 52.3k33 gold badges139139 silver badges222222 bronze badges Post Deleted by Mark Adler occurred Oct 5 '13 at 19:43 5 added 61 characters in body edited Oct 5 '13 at 19:43 Mark Adler 52.3k33 gold badges139139 silver badges222222 bronze badges 4 added 61 characters in body edited Oct 5 '13 at 19:31 Mark Adler 52.3k33 gold badges139139 silver badges222222 bronze badges 3 deleted 555 characters in body edited Oct 5 '13 at 19:23 Mark Adler 52.3k33 gold badges139139 silver badges222222 bronze badges 2 deleted 555 characters in body edited Oct 5 '13 at 19:17 Mark Adler 52.3k33 gold badges139139 silver badges222222 bronze badges 1 answered Oct 5 '13 at 19:11 Mark Adler 52.3k33 gold badges139139 silver badges222222 bronze badges