Good idea. I wouldn't be surprised if it has already been done, but for a different purpose.
Off the top of my head, I think the sun takes like 250,000 years to complete and orbit.
6,500,000/250,000 = 26 orbits since the Sun’s birth.
The Sun’s siblings should share a similar orbital distance from the center of the Milk Way as the Sun. I would think after 26 orbits they would be spread out along a similar orbit.