[brownkonas]

Is there any working directory of stars of the Milky Way with [x,y,z, t] coordinates ? a galaxy class coordinate system ?

[teamonkey]

If you're looking for a dataset, the GAIA project public data releases[1] are probably the best you'll find.

[1] https://www.cosmos.esa.int/web/gaia/dr2

[JoeDaDude]

I'm assuming something like the Gaia dataset was used to create this representation of stars near us?

https://stars.chromeexperiments.com/

[DennisP]

I've seen databases of nearby stars, with just the 3D coords. Biggest I think had 100,000 stars.

I don't think we have detailed data for the 100 million stars of the entire Milky Way.

[mr_toad]

There’s at least 100 billion (not million). Maybe as many as 800 billion. We can’t see most of them.