Masahiro Koishikawa

Japanese astronomer (1952-)
Person Human Q973533

Facts

15 properties
Instance of
human
Sex or gender
male[10]
Date of birth
1952
Date of death
August 26, 2020
Place of birth
Sendai
Place of death
Sendai
Country of citizenship
Japan[6]
Occupation
astronomer
Languages spoken, written or signed
Japanese[13]
Family name
Koishikawa[11]
Given name
Masahiro[12]
Name in kana
こいしかわ まさひろ[15]
Name in native language
小石川 正弘[14]
🏷️ Also known as
en Koishikawa Masahiro en Masahiro Koishikawa da Koishikawa Masahiro de Koishikawa Masahiro en-gb Koishikawa Masahiro es Koishikawa Masahiro fi Koishikawa Masahiro fr Koishikawa Masahiro hu Koisikava Maszahiro hu Masahiro Koishikawa it Koishikawa Masahiro ja こいしかわ まさひろ ja 小石川正弘 ko 고이시카와 마사히로 ko 코이시카와 마사히로 nl Koishikawa Masahiro pl Koishikawa Masahiro pt Koishikawa Masahiro ro Koishikawa Masahiro ru Коисикава, Масахиро
🔖 Identifiers · 2
Freebase ID
/m/03b10x
WikiTree person ID
小石川-1

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🔗 Connections
← Discoverer or inventor 14
Country of citizenship 1
Employer 1
Given name 1
Instance of 1
Languages spoken, written or signed 1
Occupation 1
Place of birth 1
Place of death 1
Sex or gender 1
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Summary

Masahiro Koishikawa was born in 1952[1] in Sendai[2]. He died on August 26, 2020[3], in Sendai[4]. He worked as an astronomer[5].

Why It Matters

Masahiro Koishikawa is credited with the discovery of 5751 Zao[16], an asteroid[17]; 7816 Hanoi[18], an asteroid[19]; 8084 Dallas[20], an asteroid[21]; 10500 Nishi-koen[22], an asteroid[23]; 3994 Ayashi[24], an asteroid[25]; and 12252 Gwangju[26], an asteroid[27].

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 an astronomer[5].

Where did Masahiro Koishikawa go to school?

Masahiro Koishikawa was educated at Miyagi Prefecture Agricultural High School[9].

What did Masahiro Koishikawa discover?

Masahiro Koishikawa is credited as discoverer of 5751 Zao[16], 7816 Hanoi[18], 8084 Dallas[20], and 10500 Nishi-koen[22].

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. [10] ↑ . wikidata.org.
  4. [6] ↑ . wikidata.org.
  5. [9] ↑ . wikidata.org.
  6. [5] ↑ . wikidata.org.
  7. [7] ↑ . wikidata.org.
  8. [8] ↑ . wikidata.org.
  9. [1] ↑ . wikidata.org.
  10. [3] ↑ . wikidata.org.
  11. [11] ↑ . wikidata.org.
  12. [12] ↑ . wikidata.org.
  13. [13] ↑ . wikidata.org.
  14. [14] ↑ . wikidata.org.
  15. [15] ↑ . wikidata.org.

Inverse relationships (entities pointing at this one)

  1. [16] ↑ . wikidata.org. → on this site
  2. [18] ↑ . wikidata.org. → on this site
  3. [20] ↑ . wikidata.org. → on this site
  4. [22] ↑ . wikidata.org. → on this site
  5. [24] ↑ . wikidata.org. → on this site
  6. [26] ↑ . wikidata.org. → on this site

Inline context (facts about related entities)

  1. [17] ↑ . Wikidata. wikidata.org. → on this site
  2. [19] ↑ . Wikidata. wikidata.org. → on this site
  3. [21] ↑ . Wikidata. wikidata.org. → on this site
  4. [23] ↑ . Wikidata. wikidata.org. → on this site
  5. [25] ↑ . Wikidata. wikidata.org. → on this site
  6. [27] ↑ . Wikidata. wikidata.org. → on this site

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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 November 7, 2026, from https://4ort.xyz/entity/masahiro-koishikawa
MLA “Masahiro Koishikawa.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 Nov. 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: 2026-11-07}}
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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. 18w ago · DifoolBot bot · 2026-07-05 view diff on Wikidata ↗
    Family name → Koishikawa
    Educated at → Miyagi Prefecture Agricultural High School
    Languages spoken, written or signed → Japanese
    Country of citizenship → Japan
    + 7 other properties edited (see Wikidata diff for full list)
    "Update ru Wikipedia references for deleted/missing pages, references updated (3x) (details)"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.