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Re: What Is A Semi-Major Axis

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Posted by Chris S. on March 12, 1998 18:46:40 UTC

It refers to an ellipse which has a major axis and a semi-major axis. The major axis is defined by the two focal points of the ellipse. The semi-major axis is just 1/2 of the major axis. Sort of like a radius of a circle.

: I was wondering if a semi-major axis is the distance : between two objects, such as a black hole and its companion : star?

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