I have read about the orbit distances between Sun and the planets and have come to know for example: Earth is around 150 million km away from the Sun.
However I have seen that tht value is only an average radius of the orbit.
I however cannot find the uncertainty of this measurement.
I have considered the eccentricity of the planets and thought of using it to determine uncertainty.
So then I would have: Earth distance from Sun = $(150\times10^6\pm 2.5\times 10^6)km$. As Earth's eccentricity is around 0.017
So I am wondering if this would be the right way to determine the uncertainty of the radius of the orbit distance.