Probably 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…
Probably 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…