Masahiro Koishikawa

Japanese astronomer (1952-)
Person human Q973533
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Masahiro Koishikawa

Summary

Masahiro Koishikawa is a human[1]. He was born in Sendai[2]. He was born on January 1, 1952[3]. He passed away in Sendai[4]. He died on August 26, 2020[5]. He worked as an astronomer[6]. He has Wikipedia articles in 10 language editions, a strong signal of global cultural recognition.[7]

Key Facts

  • Masahiro Koishikawa's place of birth was Sendai[2].
  • Masahiro Koishikawa passed away in Sendai[4].
  • Masahiro Koishikawa was born on January 1, 1952[3].
  • Masahiro Koishikawa died on August 26, 2020[5].
  • Masahiro Koishikawa held citizenship in Japan[8].
  • Masahiro Koishikawa's professions included astronomer[6].
  • Among Masahiro Koishikawa's employers was Sendai Astronomical Observatory[9].
  • Among Masahiro Koishikawa's employers was Goto[10].
  • Masahiro Koishikawa was educated at Miyagi Prefecture Agricultural High School[11].
  • Masahiro Koishikawa is recorded as male[12].
  • Masahiro Koishikawa's instance of is recorded as human[13].
  • Masahiro Koishikawa's family name is recorded as Koishikawa[14].
  • Masahiro Koishikawa's given name is recorded as Masahiro[15].
  • Masahiro Koishikawa's languages spoken, written or signed is recorded as Japanese[16].
  • Masahiro Koishikawa's name in native language is recorded as {'lang': 'ja', 'text': '小石川 正弘'}[17].
  • Masahiro Koishikawa's name in kana is recorded as こいしかわ まさひろ[18].

Body

Origins and Family

Born in Sendai[2], Masahiro Koishikawa… he was born on January 1, 1952[3].

Education

Masahiro Koishikawa's education included a stint at Miyagi Prefecture Agricultural High School[11].

Career and Affiliations

Masahiro Koishikawa's professions included astronomer[6]. Employers include Sendai Astronomical Observatory[9], an astronomical observatory[19], in Japan[20] and Goto[10], a business[21], in Japan[22], founded in 1955[23], headquartered in Fuchū[24].

Death and Burial

Masahiro Koishikawa died on August 26, 2020[5]. He passed away in Sendai[4].

Why It Matters

Masahiro Koishikawa has Wikipedia articles in 10 language editions, a strong signal of global cultural recognition.[7] He is known by 17 alternative names across languages and contexts.[25]

He is credited with the discovery of 12252 Gwangju[26], an asteroid[27]; 4539 Miyagino[28], an asteroid[29]; 5751 Zao[30], an asteroid[31]; 7485 Changchun[32], an asteroid[33]; 7816 Hanoi[34], an asteroid[35]; and 10500 Nishi-koen[36], an asteroid[37].

FAQs

Where was Masahiro Koishikawa born?

Masahiro Koishikawa was born in Sendai[2].

Where did Masahiro Koishikawa die?

Masahiro Koishikawa passed away in Sendai[4].

What did Masahiro Koishikawa do for work?

Masahiro Koishikawa worked as astronomer[6].

Where did Masahiro Koishikawa go to school?

Masahiro Koishikawa was educated at Miyagi Prefecture Agricultural High School[11].

What did Masahiro Koishikawa discover?

Masahiro Koishikawa is credited as discoverer of 12252 Gwangju[26], 4539 Miyagino[28], 5751 Zao[30], and 7485 Changchun[32].

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. [12] . wikidata.org.
  4. [8] . wikidata.org.
  5. [13] . wikidata.org.
  6. [11] . wikidata.org.
  7. [6] . wikidata.org.
  8. [9] . wikidata.org.
  9. [10] . wikidata.org.
  10. [3] . wikidata.org.
  11. [5] . wikidata.org.
  12. [14] . wikidata.org.
  13. [15] . wikidata.org.
  14. [16] . wikidata.org.
  15. [17] . wikidata.org.
  16. [18] . wikidata.org.

Inverse relationships (entities pointing at this one)

  1. [26] . wikidata.org. → on this site
  2. [28] . wikidata.org. → on this site
  3. [30] . wikidata.org. → on this site
  4. [32] . wikidata.org. → on this site
  5. [34] . wikidata.org. → on this site
  6. [36] . wikidata.org. → on this site

Inline context (facts about related entities)

  1. [19] . Wikidata. wikidata.org. → on this site
  2. [20] . Wikidata. wikidata.org. → on this site
  3. [21] . Wikidata. wikidata.org. → on this site
  4. [22] . Wikidata. wikidata.org. → on this site
  5. [23] . Wikidata. wikidata.org. → on this site
  6. [24] . Wikidata. wikidata.org. → on this site
  7. [27] . Wikidata. wikidata.org. → on this site
  8. [29] . Wikidata. wikidata.org. → on this site
  9. [31] . Wikidata. wikidata.org. → on this site
  10. [33] . Wikidata. wikidata.org. → on this site
  11. [35] . Wikidata. wikidata.org. → on this site
  12. [37] . Wikidata. wikidata.org. → on this site

Class ancestry

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

Aggregate / graph-position facts

  1. [7] . Wikidata sitelinks. wikidata.org.
  2. [25] . 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). Masahiro Koishikawa. Retrieved April 10, 2026, from https://4ort.xyz/entity/masahiro-koishikawa
MLA “Masahiro Koishikawa.” 4ort.xyz Knowledge Graph, 4ort.xyz, 10 Apr. 2026, https://4ort.xyz/entity/masahiro-koishikawa.
BibTeX @misc{4ortxyz_masahiro-koishikawa_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Masahiro Koishikawa}}, year = {2026}, url = {https://4ort.xyz/entity/masahiro-koishikawa}, note = {Accessed: 2026-04-10}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Masahiro Koishikawa — https://4ort.xyz/entity/masahiro-koishikawa (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. 13d ago · DifoolBot bot · 2026-07-05 view diff on Wikidata ↗
    Employer
    Family name Koishikawa
    Educated at Miyagi Prefecture Agricultural High School
    Languages spoken, written or signed Japanese
    + 13 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-statements-multiple-properties-update:0||3 */ Update ru Wikipedia references for deleted/missing pages, references updated (3x) ([[:toolforge:editgroups/b/CB/ece1e2aa4e61|details]])"
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