| 11. | The level spacing between circular orbits can be calculated with the correspondence formula.
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| 12. | But it's speed doesn't change much in a stable circular orbit.
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| 13. | It is easily verified that circular orbits satisfy the geodesic equation.
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| 14. | The MPO will have a circular orbit much closer to Mercury.
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| 15. | This invalidated Bohr's model, with its neat, clearly defined circular orbits.
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| 16. | Assuming a circular orbit, this takes days to complete one orbit.
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| 17. | At the innermost stable circular orbit the local minimum becomes an inflection point.
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| 18. | The circular orbit had an altitude of 555 km and an inclination of 33?
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| 19. | A circular orbit is a special case, wherein the foci of the ellipse coincide.
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| 20. | Or one can have a circular orbit at that radius.
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