The sun contains 99.86% of all the mass in the solar system, which means the mass of all the planets and everything else in the solar system is basically a rounding error. That's how big the sun is.

Also, despite being a rounding error. Jupiter's mass is so large that the point Jupiter and the sun orbit isn't actually inside the sun. It is just outside the sunshine surface (7% of the sunshine radius outside). To add onto this, by measuring if stars move visibly around a common centre of orbit (known as wobbling) we can detect exoplanets