No, the sun is where it is, that's what having physical reality means. What you are talking about is how that point is named by different observers, and there

No, the sun is where it is, that's what having physical reality means. What you are talking about is how that point is named by different observers, and there is indeed great ambiguity there. But ultimately, if two persons are starting from different places towards the same goal following a map, the fact that they don't both eventually arrive at the same place has implications about the map they used, not about where the place is.