# How far is the solar system's center of mass from the sun? [duplicate]

We often say that the planets orbit the sun. But, in reality, they orbit the solar system's collective center of mass. How far is that point from the center of the sun?

• This probably would be better-suited for Astronomy SE, a duplicate there: astronomy.stackexchange.com/q/14684/31410 May 10, 2022 at 12:34
• Re But, in reality, they orbit the solar system's collective center of mass. No, they don't. While the equations of motion are in their most simple form in a barycentric frame, the planets do not orbit the barycenter. They orbit one another. There is no attraction toward the barycenter. You can see this in my answer to Do the planets really orbit the Sun? at physics.SE. May 10, 2022 at 14:32
• May 10, 2022 at 16:16
• As I said on Astronomy.SE, the nominal radius of the Sun is 695,700 km, and the mean distance between the centre of the Sun and the Solar system barycentre is ~829,200 km, but the actual distance varies considerably. May 10, 2022 at 16:24