inspirehep.net vs Minor Planet Center

Same instrument, two spec sheets — measured, not claimed.

Uptime · 30d
Uptime · 90d100%99.02%
Uptime · 30d100%98.3%
P50 · ms514217
P95 · ms9231337
Authnonenone
CORSyesyes
HTTPSyesno
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified (data derived from JPL/MPC)
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

inspirehep.net vs Minor Planet Center: common questions

Which is more reliable, inspirehep.net or Minor Planet Center?

On our scheduled checks, inspirehep.net leads on measured uptime — inspirehep.net at 100% versus Minor Planet Center at 99.02% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, inspirehep.net or Minor Planet Center?

Minor Planet Center has the lower median latency in our checks — inspirehep.net responds in 514 ms versus Minor Planet Center at 217 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do inspirehep.net and Minor Planet Center need an API key?

Neither needs a paid key — inspirehep.net is callable with no signup, and Minor Planet Center is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call inspirehep.net and Minor Planet Center from the browser?

Only inspirehep.net is browser-friendly — it returns CORS headers over HTTPS. Minor Planet Center needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are inspirehep.net and Minor Planet Center free for commercial use?

inspirehep.net has unclear commercial terms, and Minor Planet Center has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.