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Here is a link to an online animation of stars' movements in a trinary system. Basically, the three stars are orbiting around a barycenter; one (yellow in the animation, mass = 1) closer to it a...
Here is a link to an online animation of stars' movements in a trinary system. Basically, the three stars are orbiting around a barycenter; one (yellow in the animation, mass = 1) closer to it a...