Haven't astronomers already found a way to solve this problem? by using the standard Epoch.
"there has also been an astronomical tradition of retaining observations in just the form in which they were made, so that others can later correct the reductions to standard if that proves desirable, as has sometimes occurred."
[https://en.wikipedia.org/wiki/Epoch_(astronomy)]
"there has also been an astronomical tradition of retaining observations in just the form in which they were made, so that others can later correct the reductions to standard if that proves desirable, as has sometimes occurred." [https://en.wikipedia.org/wiki/Epoch_(astronomy)]