Launch Library 2 vs Satellite Passes
Same instrument, two spec sheets — measured, not claimed.
Launch Library 2 vs Satellite Passes: common questions
Which is more reliable, Launch Library 2 or Satellite Passes?
On our scheduled checks, Satellite Passes leads on measured uptime — Launch Library 2 at 1.7% versus Satellite Passes at 99.44% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Which is faster, Launch Library 2 or Satellite Passes?
Launch Library 2 has the lower median latency in our checks — Launch Library 2 responds in 405 ms versus Satellite Passes at 752 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.
Do Launch Library 2 and Satellite Passes need an API key?
Neither needs a paid key — Launch Library 2 is callable with no signup, and Satellite Passes is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call Launch Library 2 and Satellite Passes from the browser?
Yes — both Launch Library 2 and Satellite Passes send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.
Are Launch Library 2 and Satellite Passes free for commercial use?
Launch Library 2 has unclear commercial terms, and Satellite Passes has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.