Data health
Freshness
Each committed snapshot's retrieval date versus its refresh cadence and next-due date. As of 2026-08-26.
| Snapshot | Provider | Domain | Cadence | Retrieved | Age | Next due | Meta signature | Status |
|---|---|---|---|---|---|---|---|---|
| simbad-stars | SIMBAD | stars | monthly | 2026-07-11 | 46 d | 2026-08-10 | f592959b | Stale |
| gaia-stars | Gaia DR3 | stars | quarterly | 2026-07-11 | 46 d | 2026-10-10 | 1790dc6b | Healthy |
| simbad-deep-sky | SIMBAD | deep-sky | monthly | 2026-07-11 | 46 d | 2026-08-10 | b05cbc38 | Stale |
| ned-deep-sky | NED | deep-sky | monthly | 2026-07-11 | 46 d | 2026-08-10 | 206ff8f8 | Stale |
| sbdb-small-bodies | JPL SBDB | small-bodies | weekly | 2026-07-11 | 46 d | 2026-07-18 | a2b87bfe | Stale |
| wikidata-missions | Wikidata | missions | weekly | 2026-07-11 | 46 d | 2026-07-18 | 47f71f67 | Stale |
Fresh within one cadence period; aging up to 1.5×; stale beyond. The meta signature (id · date · row count) changes when a snapshot is regenerated; full content-change detection is the refresh diff's job.