Julian wrote:
> What units are the coordinates in, and what is your source for them?
X and Y coordinates are from this website : [url=
http://www.swgalaxymap.com/]
http://www.swgalaxymap.com/[/url] (the author measured them from essential atlas or got them from other canon sources), Z is extrapolated from system/object descriptions (some systems are said above or under the galactic plane.)
The easy part is to transform X, Y and Z "atlas" coordinates into light year ones with Star Wars Galaxy center as reference.
Then compute some rotation to have coordinates computed from a parallel plane to the ecliptic.
And now you can calculate distance, RA and DEC.
I simplified it by having star wars galaxy center in front of Sun's North pole and face oriented to get rid of rotations.
Julian wrote:
> The current locations of star systems in CatalogsSW aren't really accurate or canon,
> and anyway Space Engine has limitations to the precision of RA and Dec coordinates
> in a galaxy 1.25 billion light years from the Sun.
Well it seems Star Wars Galaxy from CatalogsSW is too much far, far away :o to accurately locate systems.
We might need to move it closer.
As a teaser here are some of the Old Republic ships I listed :
[img]
https://imageshack.com/a/img924/1382/dh1mWh.png[/img]