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