[RadioAstronomer]

No. Perception is *not* reality. You may percieve that the Sun revolves around the Earth, but it does not actually do so.

Actually, I can design an Earth centric coordinate system that works just fine.

However, The Sun/Earth system actually revolves around a common center of mass that just happens to be located inside the Sun do the a vast disparagy in mass between the two objects..

[Doctor Stochastic]

But the Jupiter-Sun system CoM is sometimes just outside the Sun's surface.

[protest1]

Actually, I can design an Earth centric coordinate system that works just fine.

However, The Sun/Earth system actually revolves around a common center of mass that just happens to be located inside the Sun do the a vast disparagy in mass between the two objects..

So you prefer the centre of mass of the Sun as an arbitrary frame of reference. That is no more or less valid than any other frame of reference.