Why there is no disturbance in orbital paths?

[Kaka]

Question is very simple that if orbital motion obeys ideal law's then there must be a ideal force that runs this systen...Can you identifid the force?...waiting your ideas

 

[mfb]

What makes you think the orbital paths are perfect ellipses? They are pretty good approximations to ellipses, but there are small deviations from forces between planets, general relativity and so on.

 

[hilbert2]

A more relevant question is whether the orbits are stable, i.e. can't be completely messed up by small additional forces (forces between planets, relativistic effects...).

 

[phinds]

Question is very simple that if orbital motion obeys ideal law's then there must be a ideal force that runs this systen...Can you identifid the force?...waiting your ideas

Huh? Do you really not know what "force" controls orbital motion?

 

[Janus]

A more relevant question is whether the orbits are stable, i.e. can't be completely messed up by small additional forces (forces between planets, relativistic effects...).

Small additional forces cause small changes in the orbit, for major changes, you need large influences. So for example to cause the Earth to leave the Solar system, you would have to apply enough force for a long enough time to increase its orbital velocity by some 12 km/sec. To cause it to fall into the Sun, you would have to decrease its velocity by nearly 27 km/sec. Since the forces presently acting on the Earth are small and many times acting counter to each other, there is not much chance of them causing any major disruptions to the Earth's orbit over the foreseeable future.