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A star or a planet is a material object, while a black hole is an 'immaterial' spacetime object. Does the material or 'immaterial' nature of an object make any difference in how it curves or travels through spacetime as it manifests gravitation (apart from the powerful gravitation near a black hole)?
For instance, would there be any difference in the dynamics of a star - star binary, a star - black hole binary, and black hole - black hole binary?
For instance, would there be any difference in the dynamics of a star - star binary, a star - black hole binary, and black hole - black hole binary?