Two stars with different masses are at a constant distance from each other. What is the nature of their movement?

Since the distance between the stars does not change by condition, each of the stars will move in a circle. The radii of the orbits of stars relative to the center of mass are inversely proportional to their masses. If the mass of one star is significantly greater than the mass of another, then in practice it will turn out that a low-mass star moves around a more massive one.

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