Provides information about the central body's
equatorial and polar radii.
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Computes the distance between two points on the surface of the central body. Distance is measured along a great arc path. |
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An equatorial radius along the x-axis. |
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An equatorial radius along the y-axis. |
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The polar radius along z-axis. |
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A mean radius of the central body (a+b+c)/3. |
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A volumetric radius of the central body (a*b*c)^(1/3). |