Is Minor Planet Center API down?
Current status, daily uptime history and troubleshooting for the Minor Planet Center API (Science & Math).
No, Minor Planet Center is up
Minor Planet Center answered our last daily check (Oct 24, 2026, 12:25 UTC) in 295 ms with HTTP 200.
Checking Minor Planet Center now…
Sending a request from our server.
Minor Planet Center API uptime history
- Uptime
- 2 checks so far
- Last check
- Oct 24, 2026, 12:25 UTC
- Response
- 295 ms · HTTP 200
- Last up
- Now
We check Minor Planet Center's listed URL (http://www.asterank.com/mpc) once a day. History started when Minor Planet Center was first checked, so new entries show fewer than 30 days.
Minor Planet Center API not working for you?
- A 429 response means you're being rate-limited. Slow down, cache responses, and respect any Retry-After header.
- If calls fail only in the browser with a CORS error, Minor Planet Center may not allow cross-origin requests. Call it from your server instead.
- Minor Planet Center is listed without HTTPS. Browsers block plain-HTTP requests from HTTPS pages (mixed content).
- If it works from one network but not another, check firewalls, VPNs and regional blocks.
- Check the provider's documentation, status page or social accounts for planned maintenance or a changed endpoint.
Science & Math APIs up at their last check
- 1
GBIF API
Online · 115 msGlobal Biodiversity Information Facility. A free science & math API by gbif.org.
- No API key needed
- Fast: 115 ms response
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS - 2
Macrostrat API
Online · 694 msGeologic maps, rock columns and stratigraphy data.
- No API key needed
- Returns JSON at its URL
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS - 3
Chempirical API
Online · 533 msChemical compounds with physical data, reactions and substructure search.
- No API key needed
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS - 4
CycleCalcs API
Online · 714 msInterpreted astronomy: sun and moon times, moon phases, planets, eclipses, seasons.
- No API key needed
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS - 5
Europe PMC API
Online · 118 msLife-science literature search with abstracts, citations and full-text links.
- No API key needed
- Fast: 118 ms response
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
Compare all Minor Planet Center alternatives · APIs down right now
Minor Planet Center API status FAQ
Is Minor Planet Center API down right now?
Minor Planet Center answered our last daily check (Oct 24, 2026, 12:25 UTC) in 295 ms with HTTP 200. This page also runs a live check from our server when you open it, so you can see whether Minor Planet Center is responding at this moment.
How do you check whether Minor Planet Center API is up?
Once a day our checker requests Minor Planet Center's listed URL (http://www.asterank.com/mpc) and records whether it answers within 15 seconds. Answers like 401 (needs a key), 403 (blocks bots) or 429 (rate-limited) count as up, because the server responded. The listed URL is often the documentation page, so an API endpoint can occasionally fail while its docs stay up.
What can I use if Minor Planet Center API is down?
Free Science & Math APIs that were up at their last check include GBIF, Macrostrat, Chempirical. See the full list of Minor Planet Center alternatives for a comparison.
Why does Minor Planet Center API work for others but not for me?
A 429 response means you're being rate-limited. Slow down, cache responses, and respect any Retry-After header. If calls fail only in the browser with a CORS error, Minor Planet Center may not allow cross-origin requests. Call it from your server instead. Minor Planet Center is listed without HTTPS. Browsers block plain-HTTP requests from HTTPS pages (mixed content).