The sun itself
System of orbits
It orbits at a great distance from the suns, also it is an unstable orbit.
System of orbits
Its the suns surface
The sun gravity is stronger
The simplest and best answer to that question is: -- Without gravity, there would be no astronomical orbits. -- Once you completely understand gravity, you can figure out everything there is to know about orbits, because it all comes from the behavior of gravity.
The simplest and best answer to that question is: -- Without gravity, there would be no orbits. -- Once you completely understand gravity, you can figure out everything there is to know about orbits, because it all comes from the behavior of gravity.
The sun's gravity holds the planets in their orbits. It also holds other space objects in their orbits, such as asteroids.
Mercury does get affected by the sun's gravity, which keeps it in orbit around the sun. However, the speed at which Mercury orbits the sun, along with its distance from the sun, allows it to maintain a stable orbit rather than being pulled in completely.
Pluto only orbits one Sun, our Sun, the same one we orbit.
An illusion. The Earth really orbits the Sun. The Earth is held in orbit by the Suns gravity (or the dent in spacetime made by the mass of the Sun if you believe in Einstein's theory of relativity).
The Sun's gravity, at its surface, is about 28 times Earth's surface gravity.