Yes I know It was just a hypothetical example meant to show how it worked
Moon - 1023 m/s
Earth - 29,784 m/s
Sun - 230,000 m/s
Milky way - 110,000 m/s
total ~ 370,000 m/s
which is .15% but it could for a star system that is very close to Sagittarius A* or another sufficiently large black hole it...