Pieter Jan Kaiser
type: Person
description: Ph.D. Universiteit Leiden 1862 (1838–1916)
birth date: 1838-03-03
death date: 1916-06-22
birth place: Leiden
death place: Nijmegen
nationality: Kingdom of the Netherlands
parent: Frederik Kaiser
alumni of: Leiden University
has occupation: astronomer
additional property: PropertyValue
  property ID: P18
  value: Zelfportret van P.J. Kaiser, RP-F-00-563.jpg
additional property: PropertyValue
  property ID: P19
  value: Leiden
additional property: PropertyValue
  property ID: P20
  value: Nijmegen
additional property: PropertyValue
  property ID: P21
  value: male
additional property: PropertyValue
  property ID: P22
  value: Frederik Kaiser
additional property: PropertyValue
  property ID: P27
  value: Kingdom of the Netherlands
additional property: PropertyValue
  property ID: P31
  value: human
additional property: PropertyValue
  property ID: P69
  value: Leiden University
additional property: PropertyValue
  property ID: P106
  value: astronomer
additional property: PropertyValue
  property ID: P184
  value: Frederik Kaiser
additional property: PropertyValue
  property ID: P214
  value: 15164884
additional property: PropertyValue
  property ID: P373
  value: Pieter Jan Kaiser
additional property: PropertyValue
  property ID: P549
  value: 112300
additional property: PropertyValue
  property ID: P569
  value: March 3, 1838
additional property: PropertyValue
  property ID: P570
  value: June 22, 1916
additional property: PropertyValue
  property ID: P734
  value: Kaiser
additional property: PropertyValue
  property ID: P735
  value: Pieter
additional property: PropertyValue
  property ID: P1317
  value: 1897
additional property: PropertyValue
  property ID: P1343
  value: Repertorium van Nederlandse kaartmakers
additional property: PropertyValue
  property ID: P5008
  value: Scheepvaartmuseum Wikidataproject
additional property: PropertyValue
  property ID: P6379
  value: Het Scheepvaartmuseum
additional property: PropertyValue
  property ID: P7763
  value: copyrights on works have expired
confidence:
  popularity graph score:
    score: 0.001
    score pct: 0
    tier: long_tail
    components:
      sitelinks: 0
      sitelinks norm: 0.0
      unique citations: 4
      unique citations norm: 0.002
      monthly pageviews: 0
      monthly pageviews norm: 0.0
  sitelinks: 0
  unique citations: 4
  monthly pageviews: 0
  yearly pageviews: 0
  tier: long_tail
claims:
  P18:
    value: Zelfportret van P.J. Kaiser, RP-F-00-563.jpg
    source count: 0
    confidence: 0.0
  P19:
    value: Q43631
    source count: 1
    confidence: 0.2
    value label: Leiden
  P20:
    value: Q13188714
    source count: 0
    confidence: 0.0
    value label: Nijmegen
  P21:
    value: Q6581097
    source count: 0
    confidence: 0.0
    value label: male
  P22:
    value: Q1351700
    source count: 1
    confidence: 0.2
    value label: Frederik Kaiser
  P27:
    value: Q29999
    source count: 1
    confidence: 0.2
    value label: Kingdom of the Netherlands
  P31:
    value: Q5
    source count: 0
    confidence: 0.0
    value label: human
  P69:
    value: Q156598
    source count: 1
    confidence: 0.2
    value label: Leiden University
  P106:
    value: Q11063
    source count: 1
    confidence: 0.2
    value label: astronomer
  P184:
    value: Q1351700
    source count: 1
    confidence: 0.2
    value label: Frederik Kaiser
  P214:
    value: 15164884
    source count: 0
    confidence: 0.0
  P373:
    value: Pieter Jan Kaiser
    source count: 0
    confidence: 0.0
  P549:
    value: 112300
    source count: 0
    confidence: 0.0
  P569:
    value: +1838-03-03T00:00:00Z
    source count: 1
    confidence: 0.2
  P570:
    value: +1916-06-22T00:00:00Z
    source count: 0
    confidence: 0.0
  P734:
    value: Q1158326
    source count: 0
    confidence: 0.0
    value label: Kaiser
  P735:
    value: Q1237447
    source count: 0
    confidence: 0.0
    value label: Pieter
  P1317:
    value: +1897-00-00T00:00:00Z
    source count: 1
    confidence: 0.2
  P1343:
    value: Q111386230
    source count: 1
    confidence: 0.2
    value label: Repertorium van Nederlandse kaartmakers
  P5008:
    value: Q132231248
    source count: 1
    confidence: 0.2
    value label: Scheepvaartmuseum Wikidataproject
  P6379:
    value: Q1616123
    source count: 1
    confidence: 0.2
    value label: Het Scheepvaartmuseum
  P7763:
    value: Q71887839
    source count: 1
    confidence: 0.2
    value label: copyrights on works have expired
citations:
  retrieved: 2025-09-08
citations:
  stated in qid: Q132230989
  retrieved: 2025-02-12

source: Repertorium van Nederlandse kaartmakers
stated in qid: Q111386230
retrieved: 2025-04-08

source: Mathematics Genealogy Project
stated in qid: Q829984

wikidata id: Q102311993
domain: human
level: standard
html url: https://4ort.xyz/entity/pieter-jan-kaiser
markdown url: https://4ort.xyz/entity/pieter-jan-kaiser.md
facts url summary: https://4ort.xyz/entity/pieter-jan-kaiser/facts.json
facts url standard: https://4ort.xyz/entity/pieter-jan-kaiser/facts.json
facts url full: https://4ort.xyz/entity/pieter-jan-kaiser/facts.json
data source: Wikidata (CC0 / public domain)
license: https://creativecommons.org/publicdomain/zero/1.0/
api version: v1
served at: 2026-08-30T12:09:59.671842Z
entity updated at: 2026-05-03T16:20:22.557058+00:00Z
entity created at: 2026-05-03T14:05:08.842597+00:00Z