Open Ephemeris
ChatGPT plugin by Open Ephemeris · Astrology, Human Design, BaZi
About Open Ephemeris
Open Ephemeris is a ChatGPT plugin by Open Ephemeris in the Education & Research category of the ChatGPT plugin directory. Its listing describes it as “Astrology, Human Design, BaZi”. It was created on Sep 5, 2026 and has been tracked in the directory since Oct 2, 2026.
Open Ephemeris does not currently reach the top 10 for common Education & Research searches in the directory, so most people find it by searching for its name.
On the directory's Education & Research page it is listed at position 142 of 248.
Open Ephemeris gives ChatGPT real astronomy to work from. Every position comes from the NASA JPL DE440 ephemeris covering 1550-2650 CE at sub-arcsecond precision, the same kernel used for spacecraft navigation, so positions are computed rather than estimated.From the plugin’s directory listing
Search positions
| Search | Position | Last 7 days |
|---|---|---|
| astrology | #11 |
Keyword gaps
| Search | Best competitor | Their position |
|---|---|---|
| horoscope | All your Horoscopes | #2 |
Listing check
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0 / 30Put a search term in the name Search rankThe name has none of the tracked search terms.Directory search ranks name matches first: 74% of top-3 results have the search term in the name. Searches for a brand name itself are not tracked.8 of 20 category leaders do this
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Recent changes
No changes yet.
Open Ephemeris: questions and answers
What does Open Ephemeris do?
Astrology, Human Design, BaZi. Open Ephemeris gives ChatGPT real astronomy to work from. Every position comes from the NASA JPL DE440 ephemeris covering 1550-2650 CE at sub-arcsecond precision, the same kernel used for spacecraft navigation, so positions are computed rather than estimated.
Who makes Open Ephemeris?
Open Ephemeris is developed by Open Ephemeris.
How do I add Open Ephemeris to ChatGPT?
Open ChatGPT, go to Plugins, search for “Open Ephemeris” and select Install plugin. You can also open its page in the directory directly.
Is Open Ephemeris still available in ChatGPT?
Yes. Open Ephemeris was listed in the ChatGPT plugin directory at the latest hourly check.