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Examples ofsemi-major axis
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From the perspective of the perturbation theory used in celestial mechanics to compute the evolution of the orbit, thesemi-majoraxisis an adiabatic invariant.
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This example is from Wikipedia and may be reused under a CC BY-SA license.For the special case of a circle, thesemi-majoraxisis the radius.
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This example is from Wikipedia and may be reused under a CC BY-SA license.The expressions below give the auxiliary latitudes in terms of the geodetic latitude, thesemi-majoraxis, "a", and the eccentricity, "e".
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This example is from Wikipedia and may be reused under a CC BY-SA license.This means that it is slightly flattened, its semi-minor axis being 70% of itssemi-majoraxis.
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This example is from Wikipedia and may be reused under a CC BY-SA license.This was possible due to large size of the planet and its smallsemi-majoraxis.
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This example is from Wikipedia and may be reused under a CC BY-SA license.This form of the equation is particularly useful when dealing with parabolic trajectories, for which thesemi-majoraxisis infinite.
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This example is from Wikipedia and may be reused under a CC BY-SA license.Thesemi-majoraxisis known if the mean motion and the gravitational mass are known.
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This example is from Wikipedia and may be reused under a CC BY-SA license.The two stars orbit each other with asemi-majoraxisof 1.437 arcseconds and a period of 116.24 years.
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This example is from Wikipedia and may be reused under a CC BY-SA license.For any ellipse, let "a" be the length of itssemi-majoraxisand "b" be the length of its semi-minor axis.
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This example is from Wikipedia and may be reused under a CC BY-SA license.As the eccentricity of the orbit evolves, thesemi-majoraxisof the orbital ellipse remains unchanged.
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This example is from Wikipedia and may be reused under a CC BY-SA license.Thesemi-majoraxisis one half of the major axis, and thus runs from the centre, through a focus, and to the perimeter.
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This example is from Wikipedia and may be reused under a CC BY-SA license.To calculate a dynamical parallax, the angularsemi-majoraxisof the orbit of the stars around each other is observed, together with their apparent brightness.
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This example is from Wikipedia and may be reused under a CC BY-SA license.One is invariably the equatorial radius, which is thesemi-majoraxis, "a".
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This example is from Wikipedia and may be reused under a CC BY-SA license.This central pair has asemi-majoraxisof around 867 km and a period of about 1.9 days.
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This example is from Wikipedia and may be reused under a CC BY-SA license.The two stars orbit around their common centre of mass once every 78.7 years and the secondary has asemi-majoraxisof 0.165 arcseconds.
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This example is from Wikipedia and may be reused under a CC BY-SA license.We obtain the orbital period of each planet, thesemi-majoraxisof its orbit and the orbital eccentricity.
From theCambridge English Corpus
Itssemi-majoraxisis 1.8km mi and its orbital period is 16.4 hours.
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This example is from Wikipedia and may be reused under a CC BY-SA license.If the objectsemi-majoraxisis outside these narrow ranges, the orbit becomes chaotic, with widely changing orbital elements.
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This example is from Wikipedia and may be reused under a CC BY-SA license.These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
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