Juno probe NASA’s human made craft passes closer to Jupiter than ever and photos confirm that the fifth planet from the sun looks huge.
It’s very huge and not exactly revolves around the Sun, Jupiter combines 2.5 times mass of all other planet in the solar system, it’s enough large that the center of gravity between Jupiter and the sun doesn’t actually reside inside the sun – rather, at a point in space just above the sun’s surface.
It work like that when smaller object revolves around larger object in space, smaller object doesn’t revolve in perfect circle around the larger object while both object orbit a combined center of gravity.
We can describe it with familiar situation like Earth orbiting the much-larger sun – the center of gravity resides so close to the center of the larger object that the impact of this phenomenon is negligible. The bigger object doesn’t seem to move, and the smaller one draws a circle around it.
Truth is stranger
For example, when the International Space Station (ISS) orbits the Earth, both the Earth and the space station revolve in their combined center of gravity but center of gravity is so idiotically close to the center of the Earth that the planet’s motion around the point is impossible to mark and the ISS report a near-perfect circle around the whole planet.
The same rule is applicable when any planet revolve the Sun. Sun is much larger than Mercury, Earth, Venus even Saturn that their centers of mass with the sun all lie deep within the star itself.
Not so with Jupiter.
The center of mass of the sun or barycenter lies 1.07 solar radii from the middle of the sun or 7% above the Sun surface. Sun and Jupiter both orbit around that point in space.
This not-to-scale gif from NASA illustrates the effect:
In core Sun and Jupiter are vary in size and distance, Jupiter is fraction of sun’s size and how they move through space together.