Kosmos 421

Soviet satellite launched in 1971
Thing dsz_p1_ju Q53539
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Kosmos 421

Summary

Kosmos 421 is a DSZ–P1–Ju[1]. It ranks in the top 8% of dsz_p1_ju entities by monthly Wikipedia readership (2 views/month).[2]

Key Facts

  • Kosmos 421's instance of is recorded as DSZ–P1–Ju[3].
  • Kosmos 421's manufacturer is recorded as Pivdenne Design Office[4].
  • Kosmos 421's COSPAR ID is recorded as 1971-044A[5].
  • Kosmos 421's space launch vehicle is recorded as Kosmos-2I[6].
  • Kosmos 421's SCN is recorded as 05232[7].
  • Kosmos 421's type of orbit is recorded as low Earth orbit[8].
  • Kosmos 421's UTC date of spacecraft launch is recorded as +1971-05-19T00:00:00Z[9].
  • Kosmos 421's Freebase ID is recorded as /m/07kfnj8[10].
  • Kosmos 421's significant event is recorded as rocket launch[11].
  • Kosmos 421's significant event is recorded as atmospheric entry[12].
  • Kosmos 421's start point is recorded as Plesetsk Cosmodrome Site 133[13].
  • Kosmos 421's orbital inclination is recorded as {'unit': 'Q28390', 'amount': '+70.9'}[14].
  • Kosmos 421's mass is recorded as {'unit': 'Q11570', 'amount': '+325'}[15].
  • Kosmos 421's orbital period is recorded as {'unit': 'Q7727', 'amount': '+91.65'}[16].
  • Kosmos 421's apoapsis is recorded as {'unit': 'Q828224', 'amount': '+445'}[17].
  • Kosmos 421's periapsis is recorded as {'unit': 'Q828224', 'amount': '+266'}[18].
  • Kosmos 421's Wolfram Language entity code is recorded as Entity["Satellite", "05232"][19].

Why It Matters

Kosmos 421 ranks in the top 8% of dsz_p1_ju entities by monthly Wikipedia readership (2 views/month).[2]

References

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

Direct Wikidata claims

  1. [3] . Jonathan's Space Report. wikidata.org.
  2. [4] . wikidata.org.
  3. [5] . wikidata.org.
  4. [6] . Jonathan's Space Report. wikidata.org.
  5. [7] . Jonathan's Space Report. wikidata.org.
  6. [8] . wikidata.org.
  7. [9] . Jonathan's Space Report. wikidata.org.
  8. [10] . Freebase Data Dumps. wikidata.org.
  9. [11] . Jonathan's Space Report. wikidata.org.
  10. [12] . wikidata.org.
  11. [13] . Jonathan's Space Report. wikidata.org.
  12. [14] . wikidata.org.
  13. [15] . wikidata.org.
  14. [16] . wikidata.org.
  15. [17] . wikidata.org.
  16. [18] . wikidata.org.
  17. [19] . wikidata.org.

Class ancestry

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

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.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). Kosmos 421. Retrieved May 3, 2026, from https://4ort.xyz/entity/kosmos-421
MLA “Kosmos 421.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/kosmos-421.
BibTeX @misc{4ortxyz_kosmos-421_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Kosmos 421}}, year = {2026}, url = {https://4ort.xyz/entity/kosmos-421}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Kosmos 421 — https://4ort.xyz/entity/kosmos-421 (retrieved 2026-05-03)

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