kedm·11 anni fa·discussProbably space-track.org; it's a government-run website that provides TLEs collected by a bunch of organizations.Some of the API names from space-track match what's in TLE.json, so it's probably just fetched and post-processed every couple minutes.
Some of the API names from space-track match what's in TLE.json, so it's probably just fetched and post-processed every couple minutes.