Well, the UUIDs for almost everything we use are galaxy-scale already. Astronomers just need to up those random letters a bit.

"Works on my machine"

How difficult would it be for every single thing that can be cataloged and named in the known universe to have a sufficiently unique UUID?

And then someone decides to name a random planet simply "Steve"

Sony with their headphones be like:

I believe that's intended, so it's harder for you to compare models from different retailers. At least that's how it works for mattresses.

Relevant XKCD.

I'm not a scientist/astronomer but my beste guess would be that stuff is named based on the instrument/telescope that found it first and some number or based on survey project names. There are so many objects we discover, anything "more sophisticated" would probably be too much work. If something turns out interesting later it might get additional names or a nick name.

https://en.wikipedia.org/wiki/Astronomical_naming_conventions#Modern_catalogues

It's based on their coordinates from earth, but the end result is basically what's in the OP.

Cat walking across keyboards at the wrong time of a group chat

In the middle of my backswing?!