Explorer 1

first satellite of the United States
Vehicle artificial_satellite Q49901
Explorer 1
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Explorer 1 is an artificial satellite.

Explorer 1

Summary

Explorer 1 is an artificial satellite[1]. It ranks in the top 0.98% of artificial_satellite entities by monthly Wikipedia readership (709 views/month, #1 of 102).[2]

Key Facts

  • Explorer 1's image is recorded as Explorer1.jpg[3].
  • Explorer 1's instance of is recorded as artificial satellite[4].
  • Explorer 1's operator is recorded as Army Ballistic Missile Agency[5].
  • Explorer 1's logo image is recorded as Explorer 1 logo.svg[6].
  • Explorer 1's followed by is recorded as Explorer 2[7].
  • Explorer 1's manufacturer is recorded as Jet Propulsion Laboratory[8].
  • Explorer 1's developer is recorded as Jet Propulsion Laboratory[9].
  • Explorer 1's COSPAR ID is recorded as 1958-001A[10].
  • Explorer 1's Commons category is recorded as Explorer 1[11].
  • Explorer 1's space launch vehicle is recorded as Juno I[12].
  • Explorer 1's SCN is recorded as 00004[13].
  • Explorer 1's parent astronomical body is recorded as Earth[14].
  • Explorer 1's type of orbit is recorded as medium Earth orbit[15].
  • Explorer 1's UTC date of spacecraft launch is recorded as +1958-02-01T00:00:00Z[16].
  • Explorer 1's time of object orbit decay is recorded as +1970-03-31T00:00:00Z[17].
  • Explorer 1's Freebase ID is recorded as /m/0gnwb[18].
  • Explorer 1's significant event is recorded as rocket launch[19].
  • Explorer 1's significant event is recorded as loss of signal[20].
  • Explorer 1's significant event is recorded as atmospheric entry[21].
  • Explorer 1's topic's main category is recorded as Category:Explorer 1[22].
  • Explorer 1's Commons gallery is recorded as Explorer 1[23].
  • Explorer 1's orbital eccentricity is recorded as {'amount': '+0.140'}[24].
  • Explorer 1's carries scientific instrument is recorded as Geiger counter[25].
  • Explorer 1's start point is recorded as Cape Canaveral Launch Complex 26[26].
  • Explorer 1's native label is recorded as {'lang': 'en', 'text': 'Explorer 1'}[27].

Why It Matters

Explorer 1 ranks in the top 0.98% of artificial_satellite entities by monthly Wikipedia readership (709 views/month, #1 of 102).[2] It has Wikipedia articles in 27 language editions, a strong signal of global cultural recognition.[28]

References

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

Direct Wikidata claims

  1. [3] . wikidata.org.
  2. [4] . wikidata.org.
  3. [5] . wikidata.org.
  4. [6] . wikidata.org.
  5. [7] . wikidata.org.
  6. [8] . wikidata.org.
  7. [9] . wikidata.org.
  8. [10] . NASA Space Science Data Coordinated Archive. nssdc.gsfc.nasa.gov. Provenance: wikidata.org.
  9. [11] . wikidata.org.
  10. [12] . Jonathan's Space Report. wikidata.org.
  11. [13] . NASA Space Science Data Coordinated Archive. nssdc.gsfc.nasa.gov. Provenance: wikidata.org.
  12. [14] . wikidata.org.
  13. [15] . wikidata.org.
  14. [16] . Jonathan's Space Report. wikidata.org.
  15. [17] . space-track.org. space-track.org. Provenance: wikidata.org.
  16. [18] . Freebase Data Dumps. wikidata.org.
  17. [19] . Jonathan's Space Report. wikidata.org.
  18. [20] . wikidata.org.
  19. [21] . space-track.org. space-track.org. Provenance: wikidata.org.
  20. [22] . wikidata.org.
  21. [23] . wikidata.org.
  22. [24] . wikidata.org.
  23. [25] . wikidata.org.
  24. [26] . Jonathan's Space Report. wikidata.org.
  25. [27] . wikidata.org.

Class ancestry

  1. [1] . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [28] . Wikidata sitelinks. 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). Explorer 1. Retrieved May 3, 2026, from https://4ort.xyz/entity/explorer-1
MLA “Explorer 1.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/explorer-1.
BibTeX @misc{4ortxyz_explorer-1_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Explorer 1}}, year = {2026}, url = {https://4ort.xyz/entity/explorer-1}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Explorer 1 — https://4ort.xyz/entity/explorer-1 (retrieved 2026-05-03)

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