Science & Math
No authHTTPSCORS
Science & Math
Open Ephemeris
Sub-arcsecond planetary positions, natal charts, transits, and Human Design from NASA JPL DE440.
Open Ephemeris API is a free Science & Math API that requires apiKey authentication, is served over HTTPS and does not support CORS, so it should be called from a server.
- Authentication
- apiKey
- HTTPS
- Yes
- CORS
- No
- Category
- Science & Math
Visit documentation ↗openephemeris.com
About Open Ephemeris
Every Open Ephemeris route in one place — charts, transits, astrocartography, Human Design — with working payloads and starter code.
- Provider
- Open Ephemeris
- Website
- openephemeris.com ↗
Details from openephemeris.com.
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Open Ephemeris API alternatives
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Open Ephemeris API FAQ
Who provides the Open Ephemeris API?
The Open Ephemeris API is provided by Open Ephemeris (openephemeris.com). Every Open Ephemeris route in one place — charts, transits, astrocartography, Human Design — with working payloads and starter code.
Is the Open Ephemeris API free?
Yes. The Open Ephemeris API is listed in the Science & Math category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
Does the Open Ephemeris API require an API key?
Yes. The Open Ephemeris API uses apiKey authentication, so you need to register for credentials before making requests.
Can I call the Open Ephemeris API from the browser?
Not directly. The Open Ephemeris API does not allow CORS, so call it from a server, serverless function or proxy instead of front-end JavaScript.
Does the Open Ephemeris API support HTTPS?
Yes. The Open Ephemeris API is served over HTTPS, so it's safe to use in production.