# Difference between revisions of "Orbital energy"

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− | When a body orbits another body, it has [[kinetic energy]] (since it is moving) and [[potential energy]] (since [[gravity]] is pulling it towards the other body). The sum of these two energies is the total orbital energy, and remains constant so long as no external force acts on the body. | + | When a body orbits another body, it has [[kinetic energy]] (since it is moving) and [[potential energy]] (since [[gravity]] is pulling it towards the other body). The sum of these two energies is the total orbital energy, and remains constant so long as no external force acts on the body. The total energy is simply the mass times [[specific energy]]: |

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+ | <math>m \times \epsilon</math> | ||

[[Category:Orbital Mechanics]] | [[Category:Orbital Mechanics]] |

## Latest revision as of 08:47, 5 February 2013

When a body orbits another body, it has kinetic energy (since it is moving) and potential energy (since gravity is pulling it towards the other body). The sum of these two energies is the total orbital energy, and remains constant so long as no external force acts on the body. The total energy is simply the mass times specific energy: