Cool paper. No propulsion, stable, cyclic orbits between the moon and Earth, with times of 45 days (1,1), 84 days (2,1), 64 days (3,1), and 74 days (3,2). Also, (3,3) were identified with no findable timeframes shown.
All the orbits are also somewhat relaxed, with relatively large windows of acceptable trajectories and distances for the later families. Perilune altitudes ranging from 750 km to over 6,000 km. The (1,1) and (2,1) are somewhat restrictive (0.1 km).
Makes a lot of interactions with the moon, exploration, resupply much less severe. It looks like you can leave Earth, at ~0.4 or ~0.6 moon orbit radius, doing some relatively low velocity, and hit a stable resonance orbit. You just have to stay out of GEO satellite orbit window where Earth is the dominant gravitation.
Also, may imply that such orbits exist with pretty much every single moon around every single planet. Implies there's a Sun-Earth orbit family group that's very similar. Probably some multi-moon orbits with places like Mars and Jupiter.
Also, implies that there may also be a bunch of objects (rocks, meteoroids, dust, asteroids, comet remains, ect...) already orbiting in these types of cyclers, since they're relatively accepting of variations on a basic theme. (3,1) is a ~250 km window, (3,3) is a 2000+ km window.
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[ 4.1 ms ] story [ 11.9 ms ] threadAll the orbits are also somewhat relaxed, with relatively large windows of acceptable trajectories and distances for the later families. Perilune altitudes ranging from 750 km to over 6,000 km. The (1,1) and (2,1) are somewhat restrictive (0.1 km).
Makes a lot of interactions with the moon, exploration, resupply much less severe. It looks like you can leave Earth, at ~0.4 or ~0.6 moon orbit radius, doing some relatively low velocity, and hit a stable resonance orbit. You just have to stay out of GEO satellite orbit window where Earth is the dominant gravitation.
Also, may imply that such orbits exist with pretty much every single moon around every single planet. Implies there's a Sun-Earth orbit family group that's very similar. Probably some multi-moon orbits with places like Mars and Jupiter.
Also, implies that there may also be a bunch of objects (rocks, meteoroids, dust, asteroids, comet remains, ect...) already orbiting in these types of cyclers, since they're relatively accepting of variations on a basic theme. (3,1) is a ~250 km window, (3,3) is a 2000+ km window.