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TLE

Two-line element sets for orbiting satellites

🔭 Science & SpaceUNMONITORED
AUTH NONECORS ✓AGENT ?HTTPS ✓COMMERCIAL ?

Serves NORAD two-line element (TLE) orbital data for satellites by catalog number, including the familiar line1/line2 pair and a timestamp. Query 25544 and you get the ISS's current elements. Ideal for orbit-propagation and satellite-tracking projects.

—HOW IT'S SCORED ⓘ
▶ Run liveDocs ↗
Status badge · for your READMEshipapis health badge: — · unmonitored
ON PROBE SCHEDULE

We probe a documented GET and expect 2xx JSON — full uptime and health score. Open provider docs ↗

Uptime historystarts after first probe

On our probe schedule. Uptime charts appear after the first check lands.

Example responsefrom provider docs — not verified by us
GET https://tle.ivanstanojevic.me/api/tle/25544

{
  "@type": "Tle",
  "satelliteId": 25544,
  "name": "ISS (ZARYA)",
  "date": "2026-07-04T19:09:56+00:00",
  "line1": "1 25544U 98067A   26185.79857271  .00009725  00000+0  18504-3 0  9991",
  "line2": "2 25544  51.6303 212.9192 0006761 256.1012 103.9224 15.48894567574489"
}
Call itcurl · fetch · python
curl "https://tle.ivanstanojevic.me/api/tle/25544"
const res = await fetch("https://tle.ivanstanojevic.me/api/tle/25544");
const data = await res.json();
console.log(data);
import requests

res = requests.get("https://tle.ivanstanojevic.me/api/tle/25544")
print(res.json())
Endpoints · 6On scheduleFULL DOCS ↗
On schedule — GET /api/tle/25544 awaits first probe
GET/api/tle/25544PROBED

Two-line element sets for orbiting satellites

GET/api/tle

Tle — documented GET route.

GET/api/tle/1

Tle details by ID (example: 1).

GET/api

Api — documented GET route.

GET/api/1

Api details by ID (example: 1).

GET/api?limit=10

Api — documented GET route.

Machine-readable spec

We probe a documented GET and expect 2xx JSON — full uptime and health score. Export includes every documented route below.

Response-shape history

Not tracked yet. Shape-change history starts once this API joins our probe schedule.

TLE: common questions

Is TLE free to use?

Yes — TLE is a free science & space API. Free tier: Free — limits not published. Whether the free tier allows commercial use is unclear — check the provider docs.

Does TLE need an API key?

No — TLE needs no API key or signup. You can call it straight away; rate limits still apply (Unpublished).

Can I call TLE from the browser?

Yes — TLE returns CORS headers over HTTPS, so front-end code can fetch it directly with no backend proxy. Use the fetch snippet on this page, or hit "Run live" to try it now.

Is TLE up right now?

TLE is catalogued but not yet on our probe schedule, so we don't publish a live status for it. Check the provider's own status page or docs for its current state.