Hasan .

asked • 04/15/21

astronomy questions

the eccentricity of an ellipse is always a fraction, btw 1 and 0, and it has no units.


true/false?

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Sidney P. answered • 04/16/21

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True, for an ellipse the eccentricity is the ratio of two lengths, distance from center to focus c divided by semi-major axis a. Because the focus is inside the ellipse, c < a, therefore the ratio is between 1 and 0 with no units.

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