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Space

Celestrak TLE Data

Celestrak

1Low Activity

Celestrak's Celestrak TLE Data provides access to tle data, satellite catalog, orbital elements and more. Global coverage, updated daily. No authentication required.

TLE dataSatellite catalogOrbital elementsDecay predictions

No AuthFreeDailyGlobal

SO 2K Q's

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ESA APIs

ESA

1Low Activity

ESA's ESA APIs provides access to earth observation, debris, sentinel data and more. Global coverage, updated daily. Free tier available.

Earth observationDebrisSentinel dataSpace weather

API KeyFreeDailyGlobal

SO 2K Q's

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ISS Location API

Open Notify

Real-time International Space Station position and pass times.

Real-time ISS PositionLatitude & LongitudeOrbital SpeedCrew ListPass Times

No AuthFreeReal-timeGlobal

Quick start

const res = await fetch('http://api.open-notify.org/iss-now.json');
const { iss_position, timestamp } = await res.json();
console.log(`ISS at ${new Date(timestamp * 1000).toISOString()}`);
console.log(`Lat: ${iss_position.latitude}, Lng: ${iss_position.longitude}`);

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JPL Horizons API

NASA JPL

1Low Activity

NASA JPL's JPL Horizons API provides access to planetary positions, ephemeris, close approaches and more. Global coverage, updated daily. No authentication required.

Planetary positionsEphemerisClose approachesPhysical properties

No AuthFreeDailyGlobal

SO 2K Q's

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Le Système Solaire API

Wikimedia

1Low Activity

Wikimedia's Le Système Solaire API provides access to planets, moons, physical data and more. Global coverage, updated monthly. No authentication required.

PlanetsMoonsPhysical dataOrbital dataDiscovery info

No AuthFreeMonthlyGlobal

SO 2K Q's

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Minor Planet Center API

IAU

1Low Activity

IAU's Minor Planet Center API provides access to asteroid orbits, comet data, neo catalog and more. Global coverage, updated daily. No authentication required.

Asteroid orbitsComet dataNEO catalogDiscovery data

No AuthFreeDailyGlobal

SO 2K Q's

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NASA DONKI

NASA

Space Weather Database of Notifications, Knowledge, Information. Solar events.

Solar FlaresCoronal Mass EjectionsGeomagnetic StormsSolar Energetic ParticlesRadio Blackouts

No AuthFreeReal-timeGlobal

Quick start

const res = await fetch(
  `https://api.nasa.gov/DONKI/CME?startDate=2024-01-01&endDate=2024-01-31&api_key=${process.env.NASA_API_KEY}`
);
const events = await res.json();
console.log(`Coronal Mass Ejections in Jan 2024: ${events.length}`);
events.slice(0, 2).forEach(e => console.log(`${e.startTime}: ${e.note?.slice(0, 80)}`));

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NASA Open APIs

NASA

NASA's public APIs. APOD, Mars rover photos, asteroids, solar flares, and more.

Astronomy Picture of DayMars Rover PhotosNear-Earth ObjectsSolar FlaresEarth Imagery

API KeyFreeDailyGlobal

Quick start

// NASA APOD (Astronomy Picture of the Day)
const res = await fetch(
  `https://api.nasa.gov/planetary/apod?api_key=${process.env.NASA_API_KEY}`
);
const { date, title, url, explanation } = await res.json();
console.log(`${date} — ${title}`);
console.log(url);

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Open Notify ISS API

Open Notify

1Low Activity

Open Notify's Open Notify ISS API provides access to iss position, people in space, iss pass times. Global coverage, updated realtime. No authentication required.

ISS positionPeople in spaceISS pass times

No AuthFreeReal-timeGlobal

SO 2K Q's

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SpaceX API

SpaceX (unofficial)

9Low Activity

Open SpaceX data. Launches, rockets, capsules, crew, and starlink satellites.

Launch HistoryRocket SpecsLanding Success RateStarlink SatellitesCrew Missions

No AuthFreeReal-timeGlobal

★ 11K

Quick start

const res = await fetch('https://api.spacexdata.com/v4/launches/latest');
const launch = await res.json();
console.log(`Latest launch: ${launch.name} on ${new Date(launch.date_utc).toDateString()}`);
console.log(`Success: ${launch.success}`);

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