A: REX is an artificial satellite. In the provided records it is identified by the numeric descriptor 21527.

Q: How is REX represented in Wolfram Language?

A: REX is represented as Entity["Satellite","21527"] in the Wolfram Language entity coding shown in the source.

Q: What does the Wikidata description for REX say?

A: The Wikidata short description provided for REX is "21527".

Q: Is there SEO or public descriptive metadata available for REX?

A: No SEO data is available for REX in the provided context.

REX

U.S. military ionospheric research satellite

Vehicle artificial_satellite Q111499776

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REX

Summary

REX is an artificial satellite^[1].

Key Facts

REX's instance of is recorded as artificial satellite^[2].

⭐ Popularity Graph

0/100 long tail

Quick Facts

Instance of research satellite, military satellite

Country United States

Followed by REX 2

Properties

Country of origin United States

Manufacturer Q140521712

Mass +86

Operator Space Test Program

Significant event rocket launch

Space launch vehicle Scout G-1

Spacecraft bus Q140626444

Start point Vandenberg Space Launch Complex 5

Type of orbit Sun-synchronous orbit

Utc date of spacecraft launch June 29, 1991

External References (3)

Cospar id 1991-045A

Scn 21527

Wolfram language entity code Entity["Satellite", "21527"]

🔗 Connections

Instance of 1

artificial satellite

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

[2] ↑ REX — instance of (P31): artificial satellite. wikidata.org.

Class ancestry

[1] ↑ REX is an instance of artificial satellite (Q26540) [P31, primary]. Wikidata. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). REX. Retrieved May 3, 2026, from https://4ort.xyz/entity/rex-q111499776

MLA “REX.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/rex-q111499776.

BibTeX

@misc{4ortxyz_rex-q111499776_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{REX}}, year = {2026}, url = {https://4ort.xyz/entity/rex-q111499776}, note = {Accessed: 2026-05-03}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): REX — https://4ort.xyz/entity/rex-q111499776 (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/rex-q111499776 · Last refreshed: May 3, 2026

Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

12d ago · Huntster · 2026-07-19 view diff on Wikidata ↗

Utc date of spacecraft launch → +1991-06-29T00:00:00Z

Mass → +86

Instance of → artificial satellite

Significant event → Q797476

+ 11 other properties edited (see Wikidata diff for full list)

"/* wbsetclaim-create:2||1 */ [[Property:P707]]: [[Q140626444]]"
12d ago · Huntster · 2026-07-19 view diff on Wikidata ↗

Wolfram language entity code → Entity["Satellite", "21527"]

Instance of → artificial satellite

Wolfram language entity code → —

Wikidata description → U.S. military ionospheric research satellite

+ 1 other property edited (see Wikidata diff for full list)

"/* wbsetclaim-update:2||1 */ [[Property:P31]]: [[Q105839698]]"

Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.

REX

REX