Indeed I do. If you don't, on the other hand, you've just revealed that you haven't a clue about even the most elementary principles of physics. Why not just admit that your question is a bluff in an attempt to get me to help you make heads or tails of a topic you can't even begin to understand, but are attempting to "debate" anyway?
You're the one who's bluffing. The fact that the distance between the earth and sun varies means absolutely nothing in terms of the heliocentric/geocentric models.
It's a metaphysical choice which system you believe. The unique evidence is exactly what you have presented... nothing.
"In modern calculations, the origin and orientation of a coordinate system often have to be selected. For practical reasons, systems with their origin in the center of Earth's mass, solar mass or in the center of mass of solar system are frequently selected. The adjectives geocentric or heliocentric may be used in this context. However, such selection of coordinates has no philosophical or physical implications."
Fred Hoyle wrote:
"The relation of the two pictures [geocentricity and heliocentricity] is reduced to a mere coordinate transformation and it is the main tenet of the Einstein theory that any two ways of looking at the world which are related to each other by a coordinate transformation are entirely equivalent from a physical point of view. (Hoyle, 1973, p. 78) "
http://en.wikipedia.org/wiki/Heliocentrism