[dr_lew]

You didn’t give an answer. How could you have? You never addressed the question. The question relates to the deviation of the earths orbit from a circle, as characterized by its eccentricity. You never got anywhere near this.

You provided a formula for the width of a 0.5mm pencil line forming an 8” circle scaled up to the size of earth’s orbit. You considered no information about the shape of this orbit.

“Trust me, I know what I’m doing.”

I was a physics TA! ... back in the day.

[JRandomFreeper]

How wide is a pencil mark depicting the orbit of Terra on a sheet of 8 1/2 x 11" piece of paper, scaled to size? How does that compare to the actual orbit of Terra?

Physics TA... is a circle an ellipse?

Cooks know the answer to that question.

/johnny