# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/yoshihide-kozai
# Generated: 2026-09-07T18:59:31.638Z

schema: https://schema.org/Person
url: "https://fame.am/person/yoshihide-kozai"
name: "Yoshihide Kozai"
slug: "yoshihide-kozai"
description: "Yoshihide Kozai was a Japanese astronomer specialising in celestial mechanics. He is best known for discovering, simultaneously with Michael Lidov, the Kozai mechanism, for which he received the Imperial Prize of the Japan Academy in 1979. He was the first Japanese president of the International Astronomical Union from 1988 to 1991, and was director of the National Astronomical Observatory of Japan from 1988 to 1994. He was professor emeritus at the University of Tokyo, National Astronomical Observatory of Japan and The Graduate University for Advanced Studies."
tagline: "Astronomer in Japan (1928-2018)"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/Yoshihide_Kozai_19801212_color.jpg?width=1200"
gender: "male"
country:
  name: "Japan"
  isoCode: "JP"
category:
  name: "Scientists"
  slug: "scientists"
profileType:
  name: "Scientist"
  slug: "scientist"
  entityType: "https://www.wikidata.org/entity/Q39631"
birthDate: "1928-04-01"
deathDate: "2018-02-05"
livingStatus: "DECEASED"
scores:
  popularity:           45.69
  momentum:             1.607142857142857
  historical:           10.68772666666667
  currentAttention:     0
  sourceConfidence:     60
  profileCompleteness:  70
  trendDirection:       "FALLING"
ranks:
  global:   null
  country:  null
  category: null
sources:
  - url: "https://zh.wikipedia.org/wiki/%E5%8F%A4%E5%9C%A8%E7%94%B1%E7%A7%80"
    title: "古在由秀"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/Yoshihide_Kozai"
    title: "Yoshihide Kozai"
    type:  "WIKIPEDIA"
  - url: "https://en.wikipedia.org/wiki/Yoshihide_Kozai"
    title: "Yoshihide Kozai"
    type:  "WIKIPEDIA"
  - url: "https://eo.wikipedia.org/wiki/Yoshihide_Kozai"
    title: "Yoshihide Kozai"
    type:  "WIKIPEDIA"
  - url: "https://fr.wikipedia.org/wiki/Yoshihide_Kozai"
    title: "Yoshihide Kozai"
    type:  "WIKIPEDIA"
  - url: "https://id.wikipedia.org/wiki/Yoshihide_Kozai"
    title: "Yoshihide Kozai"
    type:  "WIKIPEDIA"
  - url: "https://it.wikipedia.org/wiki/Yoshihide_Kozai"
    title: "Yoshihide Kozai"
    type:  "WIKIPEDIA"
  - url: "https://ja.wikipedia.org/wiki/%E5%8F%A4%E5%9C%A8%E7%94%B1%E7%A7%80"
    title: "古在由秀"
    type:  "WIKIPEDIA"
  - url: "https://ko.wikipedia.org/wiki/%EA%B3%A0%EC%9E%90%EC%9D%B4_%EC%9A%94%EC%8B%9C%ED%9E%88%EB%8D%B0"
    title: "고자이 요시히데"
    type:  "WIKIPEDIA"
  - url: "https://ru.wikipedia.org/wiki/%D0%9A%D0%BE%D0%B4%D0%B7%D0%B0%D0%B8%2C_%D0%81%D1%81%D0%B8%D1%85%D0%B8%D0%B4%D1%8D"
    title: "Кодзаи, Ёсихидэ"
    type:  "WIKIPEDIA"
  - url: "https://simple.wikipedia.org/wiki/Yoshihide_Kozai"
    title: "Yoshihide Kozai"
    type:  "WIKIPEDIA"
  - url: "https://uk.wikipedia.org/wiki/%D0%99%D0%BE%D1%81%D1%96%D1%85%D1%96%D0%B4%D0%B5_%D0%9A%D0%BE%D0%B4%D0%B7%D0%B0%D1%97"
    title: "Йосіхіде Кодзаї"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q11410990"
    title: "Wikidata"
    type:  "WIKIDATA"

# bio (long form, separated for readability)
bio: |
  Imported from discovery source: wikidata-dump