@emanuele-l-1
Burglar
commented
Sure, we also have the Moon to consider that also create a much more complicate orbit and finally the General Relativity that has a non-linear correction to the Newtonian law. But it is remarkable the fact that with a very simple calculation we are able to evaluate the distance of the Earth from the Sun in a very good approximation.
on
How does gravity keep a planet moving in an orbit around the sun?