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TDRS-4

decommissioned American communications satellite
Thing tracking_and_data_relay_satellite Q7669869
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TDRS-4

Summary

TDRS-4 is a Tracking and Data Relay Satellite[1]. TDRS-4 draws 9 Wikipedia views per month (tracking_and_data_relay_satellite category, ranking #5 of 13).[2]

Key Facts

  • TDRS-4 is in the country of United States[3].
  • TDRS-4's image is recorded as TDRS-4 and Earth through the bay door2 (cropped).jpg[4].
  • TDRS-4's instance of is recorded as Tracking and Data Relay Satellite[5].
  • TDRS-4's instance of is recorded as derelict satellite[6].
  • TDRS-4's operator is recorded as National Aeronautics and Space Administration[7].
  • TDRS-4's follows is recorded as TDRS-3[8].
  • TDRS-4's followed by is recorded as TDRS-5[9].
  • TDRS-4's manufacturer is recorded as TRW Inc.[10].
  • TDRS-4's COSPAR ID is recorded as 1989-021B[11].
  • TDRS-4's part of is recorded as Tracking and Data Relay Satellite System[12].
  • TDRS-4's Commons category is recorded as TDRS-D[13].
  • TDRS-4's space launch vehicle is recorded as Space Shuttle[14].
  • TDRS-4's SCN is recorded as 19883[15].
  • TDRS-4's type of orbit is recorded as geosynchronous orbit[16].
  • TDRS-4's UTC date of spacecraft launch is recorded as +1989-03-13T00:00:00Z[17].
  • TDRS-4's Freebase ID is recorded as /m/076thsd[18].
  • TDRS-4's significant event is recorded as rocket launch[19].
  • TDRS-4's significant event is recorded as service retirement[20].
  • TDRS-4's significant event is recorded as spacecraft decommissioning[21].
  • TDRS-4's space tug is recorded as Inertial Upper Stage[22].
  • TDRS-4's start point is recorded as Kennedy Space Center Launch Complex 39B[23].
  • TDRS-4's length is recorded as {'unit': 'Q11573', 'amount': '+17.3'}[24].
  • TDRS-4's width is recorded as {'unit': 'Q11573', 'amount': '+14.2'}[25].
  • TDRS-4's mass is recorded as {'unit': 'Q11570', 'amount': '+2108'}[26].
  • TDRS-4's nominal power output is recorded as {'unit': 'Q25236', 'amount': '+1700'}[27].

Why It Matters

TDRS-4 draws 9 Wikipedia views per month (tracking_and_data_relay_satellite category, ranking #5 of 13).[2] TDRS-4 is known by 4 alternative names across languages and contexts.[28]

Related Entities

derelict satellite Inertial Upper Stage Space Shuttle TDRS-3 TDRS-5 Tracking and Data Relay Satellite United States

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] ↑ . wikidata.org.
  9. [11] ↑ . wikidata.org.
  10. [12] ↑ . wikidata.org.
  11. [13] ↑ . wikidata.org.
  12. [14] ↑ . wikidata.org.
  13. [15] ↑ . Jonathan's Space Report. wikidata.org.
  14. [16] ↑ . wikidata.org.
  15. [17] ↑ . Jonathan's Space Report. wikidata.org.
  16. [18] ↑ . wikidata.org.
  17. [19] ↑ . Jonathan's Space Report. wikidata.org.
  18. [20] ↑ . spaceflightnow.com. spaceflightnow.com. Provenance: wikidata.org.
  19. [21] ↑ . nasa.gov. nasa.gov. Provenance: wikidata.org.
  20. [22] ↑ . space.skyrocket.de. space.skyrocket.de. Provenance: wikidata.org.
  21. [23] ↑ . Jonathan's Space Report. wikidata.org.
  22. [24] ↑ . nasa.gov. nasa.gov. Provenance: wikidata.org.
  23. [25] ↑ . nasa.gov. nasa.gov. Provenance: wikidata.org.
  24. [26] ↑ . nasa.gov. nasa.gov. Provenance: wikidata.org.
  25. [27] ↑ . nasa.gov. nasa.gov. Provenance: wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

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

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