1. Each of the Hilda objects moves along its own elliptic orbit . 2. The bi-elliptic transfer consists of two half elliptic orbits . 3. Celestial bodies rotating about each other often have elliptic orbits . 4. It s as easy to see that it also holds for elliptic orbits . 5. Also the relative position of one body with respect to the other follows an elliptic orbit . 6. The Moon moves around Earth in an elliptic orbit that takes about 29 days to complete. 7. When gradually making an elliptic orbit larger, it means applying thrust each time when near the periapsis. 8. When gradually making an elliptic orbit smaller, it means applying thrust each time when near the periapsis. 9. :: : : Has the elliptic orbit of the Moon been a factor in choosing launch dates? 10. Under standard assumptions a body traveling along an escape orbit will hyperbolic trajectories from negative-energy elliptic orbits .
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