Ephemera ephemera.space
Every eight hours, SpaceX publishes where each Starlink satellite is going, with its uncertainty. It is the only public feed of its kind. Each set is replaced by the next. Ephemera keeps the history.
The archive record
As of 2026-08-31 20:31 UTC the archive holds 5 cycles. 4 are complete with Merkle roots and 4 are anchored in Bitcoin through OpenTimestamps. Raw data kept: 91 GB. Poller heartbeat coverage: not yet measured (heartbeat history shorter than 24 h). Cadence holds (a manifest served longer than 9 hours): 0. This project exists because SpaceX publishes the feed openly.
| first seen (utc) | cycle | files recorded | raw gb | merkle root | opentimestamps | wayback machine |
|---|---|---|---|---|---|---|
| 2026-08-31 20:22 | 513b92c4683e | pulling now: 0 of 10,481 so far | 0.0 | none | follows the pull | pending |
| 2026-08-31 11:44 | 1d424255c9ae | 8,568 / 8,568 | 17.4 | 6df13e066f37 | block 964903 | manifest ok, 10/10 samples verified |
| 2026-08-31 04:09 | 5e4faf0f4e4e | 9,353 / 9,353 | 19.0 | 91ca361b797a | block 964904 | lost: cycle superseded before witnessing completed: 1 manifest + 10 sample captures never made |
| 2026-08-30 20:02 | 92e6892c0f3e | 9,111 / 9,111 | 18.5 | 8c653747b19a | block 964904 | lost: cycle superseded before witnessing completed: 1 manifest + 10 sample captures never made |
| 2026-08-30 13:32 | 72bcd7796b49 | 17,861 / 17,861 | 36.2 | 677d3043ef28 | block 964904 | lost: cycle superseded before witnessing completed: 1 manifest + 10 sample captures never made |
Method: built from each cycle's cycle.json and witness.json in the poller's spool; coverage is the fraction of the last 24 h's minutes with a watcher heartbeat under 10 minutes old (D18); a cadence hold is a manifest first-seen gap over 9 h. Poller: home (Cape Town, residential; single poller until poller A exists). Full data: ledger.json; the verification procedure a stranger can run is in the repository's VERIFY.md (independent Merkle re-implementation, OpenTimestamps against a Bitcoin block, Wayback copies re-hashed).
Daily roots
2026-08-30: 1d7acc715f62 (stamp pending)
A daily scoreboard is under construction. It will show how well the public satellite catalogue can actually see the constellation.
Contact
Kira Ryan. KiraRyan27@gmail.com, linkedin.com/in/kira-ryan.