# Kiyotsugu Hirayama

> Kiyotsugu Hirayama  was a Japanese astronomer, best known for his discovery that many asteroid orbits were more similar to one another than chance would allow, leading to the concept of asteroid families, now called "Hirayama families" in his honour.

*Japanese astronomer (1874-1943)*

**Canonical URL:** https://fame.am/person/kiyotsugu-hirayama

## Identity
- **Profile type:** Scientist ([Wikidata](https://www.wikidata.org/entity/Q39631))
- **Category:** Scientists
- **Country:** Japan
- **Born:** 1874-10-13
- **Died:** 1943-04-08
- **Status:** deceased
- **Gender:** male

## Fame
- **Popularity score:** 46.6 / 100
- **Momentum:** 0.0 / 100  (trend: STABLE)
- **Historical depth:** 16.4 / 100
- **Attention shift:** 0.0 / 100
- **Source confidence:** 60.0 / 100
- **Profile completeness:** 55.0 / 100

## Sources
- [平山清次](https://zh.wikipedia.org/wiki/%E5%B9%B3%E5%B1%B1%E6%B8%85%E6%AC%A1)
- [كيوتسوجو هيراياما](https://arz.wikipedia.org/wiki/%D9%83%D9%8A%D9%88%D8%AA%D8%B3%D9%88%D8%AC%D9%88_%D9%87%D9%8A%D8%B1%D8%A7%D9%8A%D8%A7%D9%85%D8%A7)
- [Kiyotsugu Hirayama](https://bs.wikipedia.org/wiki/Kiyotsugu_Hirayama)
- [Kiyotsugu Hirayama](https://ca.wikipedia.org/wiki/Kiyotsugu_Hirayama)
- [Kiyotsugu Hirayama](https://de.wikipedia.org/wiki/Kiyotsugu_Hirayama)
- [Kiyotsugu Hirayama](https://en.wikipedia.org/wiki/Kiyotsugu_Hirayama)
- [Kiyotsugu Hirayama](https://es.wikipedia.org/wiki/Kiyotsugu_Hirayama)
- [Kiyotsugu Hirayama](https://fi.wikipedia.org/wiki/Kiyotsugu_Hirayama)
- [Kiyotsugu Hirayama](https://fr.wikipedia.org/wiki/Kiyotsugu_Hirayama)
- [קיוצוגו היראיאמה](https://he.wikipedia.org/wiki/%D7%A7%D7%99%D7%95%D7%A6%D7%95%D7%92%D7%95_%D7%94%D7%99%D7%A8%D7%90%D7%99%D7%90%D7%9E%D7%94)
- [Kijocugu Hirajama](https://hr.wikipedia.org/wiki/Kijocugu_Hirajama)
- [Hirajama Kijocugu](https://hu.wikipedia.org/wiki/Hirajama_Kijocugu)
- [Kiyotsugu Hirayama](https://it.wikipedia.org/wiki/Kiyotsugu_Hirayama)
- [平山清次](https://ja.wikipedia.org/wiki/%E5%B9%B3%E5%B1%B1%E6%B8%85%E6%AC%A1)
- [히라야마 기요쓰구](https://ko.wikipedia.org/wiki/%ED%9E%88%EB%9D%BC%EC%95%BC%EB%A7%88_%EA%B8%B0%EC%9A%94%EC%93%B0%EA%B5%AC)
- [Kiyotsugu Hirayama](https://lb.wikipedia.org/wiki/Kiyotsugu_Hirayama)
- [Kiyotsugu Hirayama](https://no.wikipedia.org/wiki/Kiyotsugu_Hirayama)
- [Kiyotsugu Hirayama](https://pt.wikipedia.org/wiki/Kiyotsugu_Hirayama)
- [Хираяма, Киёцугу](https://ru.wikipedia.org/wiki/%D0%A5%D0%B8%D1%80%D0%B0%D1%8F%D0%BC%D0%B0%2C_%D0%9A%D0%B8%D1%91%D1%86%D1%83%D0%B3%D1%83)
- [Хіраяма Кійоцуґу](https://uk.wikipedia.org/wiki/%D0%A5%D1%96%D1%80%D0%B0%D1%8F%D0%BC%D0%B0_%D0%9A%D1%96%D0%B9%D0%BE%D1%86%D1%83%D2%91%D1%83)
- [Wikidata](https://www.wikidata.org/wiki/Q11900)

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