NASA JPL Horizons API
Science & Math · Operational · 30d uptime 100%
NASA JPL Horizons: solar system ephemeris computation for planets, moons, asteroids, and comets.
Trust signals
Pricing
FREE
Auth
API_KEY
CORS
No
Rate limit
Unlimited; public domain
Health
888ms
Trust score
81 (B)
Last checked Oct 19, 2026 · uptime 24h 100% / 7d 100% / 30d 100%
Strong candidate; weakest signal is CORS.
Links
- Homepagessd.jpl.nasa.gov/horizons/
- Documentationssd.jpl.nasa.gov/horizons/
- Base URLssd.jpl.nasa.gov/horizons/
Integration checklist
- Auth is API_KEY— no credit card required
- No CORS — route calls through your backend.
- Rate limit: Unlimited; public domain