Communication Relay System (includes (d)) is catalogued in this registry as an artifact, held in the frame of Apollo 15 LM, from Catalogue of Manmade Material on the Moon (NASA History Office, 2012).

Registry id MMM_APOLLO_15_COMMUNICATION_RELAY_SYSTEM_INCLUDES_D · source layer nasa-mmm · provenance RAW — read directly from a source catalogue, unaltered

Exists from 1971-07-30 22:16:00 UTC (JD 2441163.42778) — no end date is recorded.

Open Communication Relay System (includes (d)) in the live scene → The scene composes a position for any date and is where a figure becomes a picture. It downloads the whole catalogue first: measured against the built product, an object outside the core resolves after about 16 s over a local network and about 147 s over a 4 Mbit link, having transferred roughly 70 MB. If you cannot wait that long, this page is the answer.

Classification

Kind	artifact
Origin	artificial (made by humans)
Planetary protection	target Luna · contact class surface · COSPAR category probabilistic_era under the policy in force at launch (II under the 2026 policy) · documentation: undocumented — a DOCUMENTATION fact, never a compliance verdict

The catalogue's own note

left at the Apollo 15 site · quantity 1 · NASA Catalogue of Manmade Material on the Moon (2012)

Reproduced as the source wrote it. Author-year citations link to their DOI where one is registered.

What this registry does not know about it

These are absences in the catalogues aggregated here, not measurements of zero, and not statements that the quantity is unknown to science:

no mass
no radius or diameter
no temperature
no published uncertainty on any value

Where this record comes from

Database	Catalogue of Manmade Material on the Moon (NASA History Office, 2012)
Authority	Catalogue of Manmade Material on the Moon (NASA History Office, 2012)
How it entered	RAW snapshot via scripts/ingest-nasa-mmm.ts
Snapshot	2026-06-11
Coverage	694 catalogued line items left at the six Apollo sites, as children of their lunar modules; the Soviet/robotic pages list whole spacecraft GCAT already tracks. US government work (public domain)

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