# epoch

drillable.com › vocab › epoch.
As of the index built 9 Sep 2026, 22:58 UTC · [cites, never asserts](/standing).
MCP https://mcp.drillable.com · [html](/vocab/epoch.html) · [markdown](/vocab/epoch.md) · [json](/vocab/epoch.json) · [discovery](/.well-known/drillable.json) · [guide](/llms.txt)

## Definitions

No reader has asserted a definition or an alias for it; its meaning is what its uses show.

## Where it is used (2 uses on 2 subjects in 1 work)

By drillable.com ([llm-extract/1](/standing#methods)).

- **icrf3** = 2015.0 · [quote](/r/sha256:081a7a8d220a76b954bfc8e546d86d3928140fdda3e381a40c49f3fdbe74f233?trace&start=18652&end=18699) · [sha256:48eb583ae5ae3e67…](/r/sha256:48eb583ae5ae3e67089655dacbf9b87eee3dd512df6d655e292a7d1b7bc52708)
- **hipparcos catalogue** = J1991.25 · [quote](/r/sha256:081a7a8d220a76b954bfc8e546d86d3928140fdda3e381a40c49f3fdbe74f233?trace&start=19333&end=19480) · [sha256:b42fe5e2b28e4f95…](/r/sha256:b42fe5e2b28e4f95bde7475dea58520b9d2dd4ea9b86e926dc6be09458e67687)


A property means what the records about it say, and nothing more.

---
[standing](/standing) · Drillable™ is a trademark of Drillable LLC.