I was watching a show on one of the science channels a couple of nights ago and I think I heard that Jupiter's gravitational pull on the sun is around half a million miles (or could have been kilometers). Now, depending on Jupiter's position in relationship to Earths, at any time does it affect the Sun-Earth distance? For example, if it happened that Jupiter was at opposition at the same time we were at perihelion would the distance between Earth & the Sun be a little less than the (roughly) 147 million kilometer Earth-Sun distance. Or if Jupiter is at conjunction is our distance increased? Or does the sun just pull/push us along at roughly the same distance, regardless of what Jupiter's effect on it is? thanks.