need help please in calculating semi major axis(SMA) of a binary star..(adsbygoogle = window.adsbygoogle || []).push({});

if for example

the orbital distance of star A is 50AU and star B is 100 AU from the centre of mass what would the SMA be?

is it as simple as the half way point ? ie 75AU?

thanks in advance

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# Calculating semi major axis

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