Orbital elements | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-05-06

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Orbital_elements


00:00:41 1 Keplerian elements
00:04:36 1.1 Required parameters
00:05:51 1.2 Alternative parametrizations
00:08:29 1.2.1 Euler angle transformations
00:18:00 2 Orbit prediction
00:18:55 3 Perturbations and elemental variance
00:20:04 4 Two-line elements
00:21:37 5 Delaunay variables
00:22:18 6 See also



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SUMMARY
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Orbital elements are the parameters required to uniquely identify a specific orbit. In celestial mechanics these elements are generally considered in classical two-body systems, where a Kepler orbit is used. There are many different ways to mathematically describe the same orbit, but certain schemes, each consisting of a set of six parameters, are commonly used in astronomy and orbital mechanics.
A real orbit (and its elements) changes over time due to gravitational perturbations by other objects and the effects of relativity. A Keplerian orbit is merely an idealized, mathematical approximation at a particular time.