I don't think 200m is enough to put them in significantly different orbits. Every once in awhile, dragon probably fires a thruster to make small adjustments. e

I don't think 200m is enough to put them in significantly different orbits. Every once in awhile, dragon probably fires a thruster to make small adjustments. edit, clarification: The problem is that the object closer to the earth will experience more gravitational force, which needs to be counteracted by orbiting faster, so that it's constantly falling 'tangent' to the earth. If they had the same angular velocity and the ISS was known to have a static distance from earth, Dragon would be slowly falling towards the earth because in order to maintain a static distance from earth, things above the ISS need to travel slower while things below need to travel faster.