Kiyotsugu Hirayama

Japanese astronomer (1874-1943)
Person human Q11900
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Kiyotsugu Hirayama

Summary

Kiyotsugu Hirayama is a human[1]. He was born in Sendai[2]. He was born on October 13, 1874[3]. He passed away in Tokyo[4]. He died on April 8, 1943[5]. He worked as an astronomer[6]. He ranks in the top 0.73% of human entities by monthly Wikipedia readership (14 views/month, #7,299 of 1,000,298).[7]

Key Facts

  • Kiyotsugu Hirayama was born in Sendai[2].
  • Kiyotsugu Hirayama passed away in Tokyo[4].
  • Kiyotsugu Hirayama was born on October 13, 1874[3].
  • Kiyotsugu Hirayama died on April 8, 1943[5].
  • Kiyotsugu Hirayama held citizenship in Japan[8].
  • Japanese was Kiyotsugu Hirayama's native language[9].
  • Kiyotsugu Hirayama's professions included astronomer[6].
  • Kiyotsugu Hirayama's field of work was astronomy[10].
  • Kiyotsugu Hirayama was employed by University of Tokyo[11].
  • Kiyotsugu Hirayama's education included a stint at University of Tokyo[12].
  • Kiyotsugu Hirayama is recorded as male[13].
  • Kiyotsugu Hirayama's instance of is recorded as human[14].
  • Kiyotsugu Hirayama's family name is recorded as Hirayama[15].
  • Kiyotsugu Hirayama's given name is recorded as Kiyotsugu[16].
  • Kiyotsugu Hirayama's described by source is recorded as Astronomers: A Biographical Reference[17].
  • Kiyotsugu Hirayama's languages spoken, written or signed is recorded as Japanese[18].
  • Kiyotsugu Hirayama's name in native language is recorded as {'lang': 'ja', 'text': '平山清次'}[19].
  • Kiyotsugu Hirayama's name in kana is recorded as ひらやま きよつぐ[20].
  • Kiyotsugu Hirayama's maintained by WikiProject is recorded as WikiProject Mathematics[21].
  • Kiyotsugu Hirayama's copyright status as a creator is recorded as copyrights on works have expired[22].

Body

Origins and Family

Kiyotsugu Hirayama was born in Sendai[2]. He was born on October 13, 1874[3]. Japanese was his native language[9].

Education

Kiyotsugu Hirayama was educated at University of Tokyo[12].

Career and Affiliations

Kiyotsugu Hirayama's professions included astronomer[6]. His field of work was astronomy[10]. He was employed by University of Tokyo[11].

Death and Burial

Kiyotsugu Hirayama died on April 8, 1943[5]. He died in Tokyo[4].

Works and Contributions

Things named for Kiyotsugu Hirayama include Hirayama[23], a lunar crater[24].

Why It Matters

Kiyotsugu Hirayama ranks in the top 0.73% of human entities by monthly Wikipedia readership (14 views/month, #7,299 of 1,000,298).[7] He has Wikipedia articles in 15 language editions, a strong signal of global cultural recognition.[25] He is known by 3 alternative names across languages and contexts.[26]

Entities named for him include Hirayama[23], a lunar crater[24].

FAQs

Where was Kiyotsugu Hirayama born?

Born in Sendai[2], Kiyotsugu Hirayama…

Where did Kiyotsugu Hirayama die?

Kiyotsugu Hirayama passed away in Tokyo[4].

What did Kiyotsugu Hirayama do for work?

Kiyotsugu Hirayama worked as astronomer[6].

Where did Kiyotsugu Hirayama go to school?

Kiyotsugu Hirayama was educated at University of Tokyo[12].

References

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

Direct Wikidata claims

  1. [2] . wikidata.org.
  2. [4] . wikidata.org.
  3. [13] . wikidata.org.
  4. [8] . wikidata.org.
  5. [14] . wikidata.org.
  6. [12] . wikidata.org.
  7. [10] . wikidata.org.
  8. [9] . wikidata.org.
  9. [6] . wikidata.org.
  10. [11] . wikidata.org.
  11. [3] . wikidata.org.
  12. [5] . wikidata.org.
  13. [15] . wikidata.org.
  14. [16] . wikidata.org.
  15. [17] . wikidata.org.
  16. [18] . wikidata.org.
  17. [19] . wikidata.org.
  18. [20] . wikidata.org.
  19. [21] . wikidata.org.
  20. [22] . wikidata.org.

Inverse relationships (entities pointing at this one)

  1. [23] . wikidata.org. → on this site

Inline context (facts about related entities)

  1. [24] . Wikidata. wikidata.org. → on this site

Class ancestry

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

Aggregate / graph-position facts

  1. [7] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [25] . Wikidata sitelinks. wikidata.org.
  3. [26] . 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). Kiyotsugu Hirayama. Retrieved April 10, 2026, from https://4ort.xyz/entity/kiyotsugu-hirayama
MLA “Kiyotsugu Hirayama.” 4ort.xyz Knowledge Graph, 4ort.xyz, 10 Apr. 2026, https://4ort.xyz/entity/kiyotsugu-hirayama.
BibTeX @misc{4ortxyz_kiyotsugu-hirayama_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Kiyotsugu Hirayama}}, year = {2026}, url = {https://4ort.xyz/entity/kiyotsugu-hirayama}, note = {Accessed: 2026-04-10}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Kiyotsugu Hirayama — https://4ort.xyz/entity/kiyotsugu-hirayama (retrieved 2026-04-10)

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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.

  1. 5w ago · PKalnai · 2026-07-14 view diff on Wikidata ↗
    Instance of
    Languages spoken, written or signed Japanese
    Place of death Tokyo
    Occupation
    + 20 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-create:2||1 */ [[Property:P463]]: [[Q11481015]]"
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