# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/jean-focas
# Generated: 2026-08-14T16:31:47.446Z

schema: https://schema.org/Person
url: "https://fame.am/person/jean-focas"
name: "Jean Focas"
slug: "jean-focas"
description: "Jean-Henri Focas was a Greek-French astronomer, painter, designer, illustrator, astrophysicists, photographer, and celestial cartographer who spoke five languages. He performed visual studies of planetary surfaces from the National Observatory of Athens, Pic du Midi, and Meudon Great Refractor. Jean is responsible for creating the most highly visual map of Mars ever created by a visual observer of the planet. He developed special photographic equipment to photograph celestial phenomena. In 1961, he published Étude Photométrique et Polarimétrique des Phénomènes Saisonniers de la Planéte Mar  which became a classic on the subject of polarimetric investigation of Mars. A crater on the Moon and a crater on Mars were named after him because of his contribution to the field."
tagline: "Greco-French astronomer (1909-1969)"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/Jean-Henri_Focas.png?width=1200"
gender: "male"
country:
  name: "France"
  isoCode: "FR"
category:
  name: "Scientists"
  slug: "scientists"
profileType:
  name: "Scientist"
  slug: "scientist"
  entityType: "https://www.wikidata.org/entity/Q39631"
birthDate: "1909-07-20"
deathDate: "1969-01-03"
livingStatus: "DECEASED"
scores:
  popularity:           38.54
  momentum:             0.9923664122137406
  historical:           6.338517333333334
  currentAttention:     0
  sourceConfidence:     39.99999999999999
  profileCompleteness:  70
  trendDirection:       "STABLE"
ranks:
  global:   null
  country:  null
  category: null
sources:
  - url: "https://zh.wikipedia.org/wiki/%E8%AE%A9%C2%B7%E7%A6%8F%E5%8D%A1"
    title: "让·福卡"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/Jean_Focas"
    title: "Jean Focas"
    type:  "WIKIPEDIA"
  - url: "https://el.wikipedia.org/wiki/%CE%99%CF%89%CE%AC%CE%BD%CE%BD%CE%B7%CF%82_%CE%95._%CE%A6%CF%89%CE%BA%CE%AC%CF%82"
    title: "Ιωάννης Ε. Φωκάς"
    type:  "WIKIPEDIA"
  - url: "https://en.wikipedia.org/wiki/Jean_Focas"
    title: "Jean Focas"
    type:  "WIKIPEDIA"
  - url: "https://es.wikipedia.org/wiki/Jean_Focas"
    title: "Jean Focas"
    type:  "WIKIPEDIA"
  - url: "https://fr.wikipedia.org/wiki/Jean-Henri_Focas"
    title: "Jean-Henri Focas"
    type:  "WIKIPEDIA"
  - url: "https://ka.wikipedia.org/wiki/%E1%83%98%E1%83%9D%E1%83%90%E1%83%9C%E1%83%94_%E1%83%A4%E1%83%9D%E1%83%99%E1%83%90"
    title: "იოანე ფოკა"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q3080542"
    title: "Wikidata"
    type:  "WIKIDATA"

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