# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/jan-woltjer
# Generated: 2026-08-13T03:19:14.266Z

schema: https://schema.org/Person
url: "https://fame.am/person/jan-woltjer"
name: "Jan Woltjer"
slug: "jan-woltjer"
description: "Jan Woltjer was a Dutch astronomer."
tagline: "Dutch astronomer (1891-1946)"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/Jan_Woltjer_at_Leiden_Kamerlingh-Onnes_Lab%2C_1926_(cropped).jpg?width=1200"
gender: "male"
category:
  name: "Scientists"
  slug: "scientists"
profileType:
  name: "Scientist"
  slug: "scientist"
  entityType: "https://www.wikidata.org/entity/Q39631"
birthDate: "1891-08-03"
deathDate: "1946-01-28"
livingStatus: "DECEASED"
scores:
  popularity:           36.91
  momentum:             0
  historical:           6.736681333333334
  currentAttention:     0
  sourceConfidence:     39.99999999999999
  profileCompleteness:  60
  trendDirection:       "FALLING"
ranks:
  global:   null
  country:  null
  category: null
sources:
  - url: "https://zh.wikipedia.org/wiki/%E6%89%AC%C2%B7%E6%B2%83%E5%B0%94%E5%88%87%E5%B0%94"
    title: "扬·沃尔切尔"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/Jan_Woltjer_(Astronom)"
    title: "Jan Woltjer (Astronom)"
    type:  "WIKIPEDIA"
  - url: "https://en.wikipedia.org/wiki/Jan_Woltjer_(astronomer)"
    title: "Jan Woltjer (astronomer)"
    type:  "WIKIPEDIA"
  - url: "https://es.wikipedia.org/wiki/Jan_Woltjer_(astr%C3%B3nomo)"
    title: "Jan Woltjer (astrónomo)"
    type:  "WIKIPEDIA"
  - url: "https://fr.wikipedia.org/wiki/Jan_Woltjer_(astronome)"
    title: "Jan Woltjer (astronome)"
    type:  "WIKIPEDIA"
  - url: "https://ja.wikipedia.org/wiki/%E3%83%A4%E3%83%B3%E3%83%BB%E3%83%B4%E3%82%A9%E3%83%AB%E3%83%81%E3%82%A7"
    title: "ヤン・ヴォルチェ"
    type:  "WIKIPEDIA"
  - url: "https://nl.wikipedia.org/wiki/Jan_Woltjer_(astronoom)"
    title: "Jan Woltjer (astronoom)"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q3272688"
    title: "Wikidata"
    type:  "WIKIDATA"

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