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advance of the perihelion |
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advance of the perihelion [əd′vans əvthə ¦per·ə¦hēl·yən] (astronomy) The slow rotation of the major axis of a planet's orbit in the direction of the planet's revolution, due to gravitational interactions with other planets and other effects such as those of general relativity. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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