The average distance of Venus from the Sun is 108.2 million km. Earth is an average of 149.6 million km. However our elliptical orbit in it present phase varies by 5 million km. At the maximum eccentricity it varies by about 20 million km, the cycle takes about 90,000 years to complete. When you consider that the average difference in distance to the Sun between Earth and Venus is 41.4 million km it is clear that our climate is going to undergo major changes as the eccentricity of the Earth orbit increases.
