Could you consider combining all your mods into one? By downloading just one mod, users can have all the planets. This is not only convenient for downloading but also makes the localization work easier.

It was a consideration. The main reasons for going with the individual mod approach was that 1) I want these planets to be usable for other developers 2) I want to integrate other planets. There is the Solar system++ pack that downloads them all together.. but yeah, localization wise is a few different files.