Gravity Probe B

space observatory to test frame dragging and geodetic effect
Vehicle research_satellite Q836799
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Gravity Probe B

Summary

Gravity Probe B is a research satellite[1]. It ranks in the top 6% of research_satellite entities by monthly Wikipedia readership (104 views/month).[2]

Key Facts

  • Gravity Probe B's image is recorded as Artist concept of Gravity Probe B.jpg[3].
  • Gravity Probe B's instance of is recorded as research satellite[4].
  • Gravity Probe B's instance of is recorded as zero-drag satellite[5].
  • Gravity Probe B's instance of is recorded as artificial satellite of the Earth[6].
  • Gravity Probe B's operator is recorded as Stanford University[7].
  • Gravity Probe B's logo image is recorded as Gravity Probe B logo (KSC-03PD3038).jpg[8].
  • Gravity Probe B's manufacturer is recorded as Lockheed Martin[9].
  • Gravity Probe B's manufacturer is recorded as Stanford University[10].
  • Gravity Probe B's COSPAR ID is recorded as 2004-014A[11].
  • Gravity Probe B's part of is recorded as Gravity Probe-B Project[12].
  • Gravity Probe B's Commons category is recorded as Gravity Probe B[13].
  • Gravity Probe B's space launch vehicle is recorded as Delta II[14].
  • Gravity Probe B's SCN is recorded as 28230[15].
  • Gravity Probe B's country of origin is recorded as United States[16].
  • Gravity Probe B's powered by is recorded as spacecraft solar array[17].
  • Gravity Probe B's type of orbit is recorded as polar orbit[18].
  • Gravity Probe B's UTC date of spacecraft launch is recorded as +2004-04-20T00:00:00Z[19].
  • Gravity Probe B's Freebase ID is recorded as /m/02m5fn[20].
  • Gravity Probe B's significant event is recorded as rocket launch[21].
  • Gravity Probe B's significant event is recorded as service entry[22].
  • Gravity Probe B's significant event is recorded as service retirement[23].
  • Gravity Probe B's official website is recorded as https://einstein.stanford.edu/[24].
  • Gravity Probe B's Encyclopædia Britannica Online ID is recorded as topic/Gravity-Probe-B[25].
  • Gravity Probe B's start point is recorded as Vandenberg Space Launch Complex 2 West[26].
  • Gravity Probe B's short name is recorded as {'lang': 'en', 'text': 'GP-B'}[27].

Why It Matters

Gravity Probe B ranks in the top 6% of research_satellite entities by monthly Wikipedia readership (104 views/month).[2] It has Wikipedia articles in 18 language editions, a strong signal of global cultural recognition.[28] It is known by 7 alternative names across languages and contexts.[29]

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] . space.skyrocket.de. space.skyrocket.de. Provenance: wikidata.org.
  6. [8] . wikidata.org.
  7. [9] . space.skyrocket.de. space.skyrocket.de. Provenance: wikidata.org.
  8. [10] . space.skyrocket.de. space.skyrocket.de. Provenance: wikidata.org.
  9. [11] . wikidata.org.
  10. [12] . wikidata.org.
  11. [13] . wikidata.org.
  12. [14] . Jonathan's Space Report. wikidata.org.
  13. [15] . wikidata.org.
  14. [16] . space.skyrocket.de. space.skyrocket.de. Provenance: wikidata.org.
  15. [17] . space.skyrocket.de. space.skyrocket.de. Provenance: wikidata.org.
  16. [18] . einstein.stanford.edu. einstein.stanford.edu. Provenance: wikidata.org.
  17. [19] . Jonathan's Space Report. wikidata.org.
  18. [20] . Freebase Data Dumps. wikidata.org.
  19. [21] . Jonathan's Space Report. wikidata.org.
  20. [22] . einstein.stanford.edu. einstein.stanford.edu. Provenance: wikidata.org.
  21. [23] . eoportal.org. eoportal.org. Provenance: 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.
  3. [29] . Wikidata aliases. 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). Gravity Probe B. Retrieved May 3, 2026, from https://4ort.xyz/entity/gravity-probe-b
MLA “Gravity Probe B.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/gravity-probe-b.
BibTeX @misc{4ortxyz_gravity-probe-b_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Gravity Probe B}}, year = {2026}, url = {https://4ort.xyz/entity/gravity-probe-b}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Gravity Probe B — https://4ort.xyz/entity/gravity-probe-b (retrieved 2026-05-03)

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