Celestrak

To find Kleos sats on Celestrak go here
https://celestrak.com/cesium/orbit-viz.php?tle=/pub/TLE/catalog.txt&satcat=/pub/satcat.txt&referenceFrame=1

Click this in the top left corner
Select "Satellite Catalog"
Type "LUX" into the bottom search bar
Click "Select Page", then deselect Vesselsat (an old dead sat)
And there you have it. There may be an easier way, but this is how I get there.
Perhaps don't post on this thread so that it is easier to go back to without having to go through lots of posts.