Jan Hendrik Oort

Dutch astronomer (1900–1992)
Person human Q309861
Jan Hendrik Oort
Joop van Bilsen · Public Domain · Wikimedia
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Jan Hendrik Oort

Summary

Jan Hendrik Oort is a human[1]. His place of birth was Franeker[2]. He was born on +1900-04-28T00:00:00Z[3]. He passed away in Leiden[4]. He died on +1992-11-05T00:00:00Z[5]. He worked as an astronomer[6], physicist[7], and university teacher[8]. He ranks in the top 0.72% of human entities by monthly Wikipedia readership (176 views/month, #7,200 of 1,000,298).[9]

Key Facts

  • Born in Franeker[2], Jan Hendrik Oort…
  • Jan Hendrik Oort died in Leiden[4].
  • Jan Hendrik Oort was born on +1900-04-28T00:00:00Z[3].
  • Jan Hendrik Oort was born on +1900-01-01T00:00:00Z[10].
  • Jan Hendrik Oort died on +1992-11-05T00:00:00Z[5].
  • Jan Hendrik Oort died on +1992-01-01T00:00:00Z[11].
  • Jan Hendrik Oort held citizenship in Kingdom of the Netherlands[12].
  • Dutch was Jan Hendrik Oort's native language[13].
  • Jan Hendrik Oort worked as an astronomer[6].
  • Jan Hendrik Oort's professions included physicist[7].
  • Jan Hendrik Oort worked as a university teacher[8].
  • Jan Hendrik Oort's field of work was astronomy[14].
  • Jan Hendrik Oort's field of work was radio astronomy[15].
  • Jan Hendrik Oort was employed by Leiden University[16].
  • Jan Hendrik Oort was employed by Leiden University[17].
  • Among Jan Hendrik Oort's employers was Leiden University[18].
  • Jan Hendrik Oort's education included a stint at University of Groningen[19].
  • Jan Hendrik Oort's doctoral advisor was Pieter Johannes van Rhijn[20].
  • Jan Hendrik Oort received the Bruce Medal[21].
  • Jan Hendrik Oort received the Gold Medal of the Royal Astronomical Society[22].
  • Jan Hendrik Oort received the Janssen Medal[23].
  • Jan Hendrik Oort received the Prix Jules Janssen[24].
  • Jan Hendrik Oort received the Henry Norris Russell Lectureship[25].
  • Jan Hendrik Oort received the Foreign Member of the Royal Society[26].
  • Jan Hendrik Oort was a member of Royal Society[27].

Body

Origins and Family

Jan Hendrik Oort's place of birth was Franeker[2]. Recorded date of birth include +1900-04-28T00:00:00Z[3] and +1900-01-01T00:00:00Z[10]. Dutch was his native language[13].

Education

Jan Hendrik Oort was educated at University of Groningen[19]. His doctoral advisor was Pieter Johannes van Rhijn[20].

Career and Affiliations

Recorded occupations include astronomer[6], physicist[7], and university teacher[8]. Fields of work include astronomy[14], a branch of science[28] and radio astronomy[15], a branch of astronomy[29]. Employers include Leiden University[16], a university[30], in Netherlands[31], founded in 1575[32], headquartered in Leiden[33]. Doctoral students include Maarten Schmidt[34], Lodewijk Woltjer[35], Cornelis Johannes van Houten[36], Vincent Icke[37], Pieter van der Kruit[38], and William Butler Burton[39].

Recognition

Awards received include Bruce Medal[21], an award[40], in United States[41], founded in 1898[42]; Gold Medal of the Royal Astronomical Society[22], a science award[43], in United Kingdom[44], founded in 1824[45]; Janssen Medal[23], a science award[46], in France[47], founded in 1886[48]; Prix Jules Janssen[24], a science award[49], in France[50], founded in 1897[51]; Henry Norris Russell Lectureship[25], a science award[52], in United States[53]; and Foreign Member of the Royal Society[26], a fellowship award[54], in United Kingdom[55].

Death and Burial

Recorded date of death include +1992-11-05T00:00:00Z[5] and +1992-01-01T00:00:00Z[11]. Jan Hendrik Oort died in Leiden[4].

Works and Contributions

Things named for Jan Hendrik Oort include Oort cloud[56], a trans-Neptunian object[57]; Oort constants[58]; and 1691 Oort[59].

Why It Matters

Jan Hendrik Oort ranks in the top 0.72% of human entities by monthly Wikipedia readership (176 views/month, #7,200 of 1,000,298).[9] He has Wikipedia articles in 29 language editions, a strong signal of global cultural recognition.[60] He is known by 56 alternative names across languages and contexts.[61]

He is credited with the discovery of Oort cloud[62], a trans-Neptunian object[63]. Entities named for him include Oort cloud[56], a trans-Neptunian object[57]; Oort constants[58]; and 1691 Oort[59].

His notable doctoral advisees include Maarten Schmidt[64], an astronomer[65], 1929–2022[66], of Kingdom of the Netherlands[67], awarded the Kavli Prize in Astrophysics[68]; Cornelis Johannes van Houten[69], an astronomer[70], 1920–2002[71], of Kingdom of the Netherlands[72], specialised in astronomy[73]; and Lodewijk Woltjer[74], an astronomer[75], 1930–2019[76], of Kingdom of the Netherlands[77], awarded the Karl Schwarzschild Medal[78].

FAQs

Where was Jan Hendrik Oort born?

Jan Hendrik Oort was born in Franeker[2].

Where did Jan Hendrik Oort die?

Jan Hendrik Oort passed away in Leiden[4].

What did Jan Hendrik Oort do for work?

Jan Hendrik Oort worked as astronomer[6], physicist[7], and university teacher[8].

Where did Jan Hendrik Oort go to school?

Jan Hendrik Oort was educated at University of Groningen[19].

What awards did Jan Hendrik Oort receive?

Honors received include Bruce Medal[21], Gold Medal of the Royal Astronomical Society[22], Janssen Medal[23], and Prix Jules Janssen[24].

What did Jan Hendrik Oort discover?

Jan Hendrik Oort is credited as discoverer of Oort cloud[62].

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [2] . Great Soviet Encyclopedia (1969–1978). Retrieved . wikidata.org.
  2. [4] . Czech National Authority Database. Retrieved . wikidata.org.
  3. [12] . Leidse Hoogleraren. Retrieved . wikidata.org.
  4. [19] . wikidata.org.
  5. [14] . wikidata.org.
  6. [15] . Czech National Authority Database. Retrieved . wikidata.org.
  7. [13] . wikidata.org.
  8. [6] . Integrated Authority File. Retrieved . wikidata.org.
  9. [7] . wikidata.org.
  10. [8] . Leidse Hoogleraren. Retrieved . wikidata.org.
  11. [16] . Leidse Hoogleraren. Retrieved . wikidata.org.
  12. [17] . Leidse Hoogleraren. Retrieved . wikidata.org.
  13. [18] . Leidse Hoogleraren. Retrieved . wikidata.org.
  14. [21] . phys-astro.sonoma.edu. Retrieved . phys-astro.sonoma.edu. Provenance: wikidata.org.
  15. [22] . wikidata.org.
  16. [23] . wikidata.org.
  17. [24] . wikidata.org.
  18. [25] . wikidata.org.
  19. [26] . Complete List of Royal Society Fellows 1660-2007. wikidata.org.
  20. [20] . Mathematics Genealogy Project. Retrieved . genealogy.ams.org. Provenance: wikidata.org.
  21. [34] . Mathematics Genealogy Project. Retrieved . genealogy.ams.org. Provenance: wikidata.org.
  22. [35] . Mathematics Genealogy Project. Retrieved . genealogy.ams.org. Provenance: wikidata.org.
  23. [36] . Mathematics Genealogy Project. Retrieved . genealogy.ams.org. Provenance: wikidata.org.
  24. [37] . Mathematics Genealogy Project. Retrieved . genealogy.ams.org. Provenance: wikidata.org.
  25. [38] . Mathematics Genealogy Project. wikidata.org.
  26. [39] . Mathematics Genealogy Project. wikidata.org.
  27. [27] . wikidata.org.
  28. [3] . Biografisch Portaal. Retrieved . wikidata.org.
  29. [10] . Czech National Authority Database. Retrieved . wikidata.org.
  30. [5] . Biografisch Portaal. Retrieved . wikidata.org.
  31. [11] . Czech National Authority Database. Retrieved . wikidata.org.

Inverse relationships (entities pointing at this one)

  1. [62] . wikidata.org. → on this site
  2. [64] . wikidata.org. → on this site
  3. [69] . wikidata.org. → on this site
  4. [74] . wikidata.org. → on this site
  5. [56] . wikidata.org. → on this site
  6. [58] . wikidata.org. → on this site
  7. [59] . wikidata.org. → on this site

Inline context (facts about related entities)

  1. [28] . Wikidata. wikidata.org. → on this site
  2. [29] . Wikidata. wikidata.org. → on this site
  3. [30] . Wikidata. wikidata.org. → on this site
  4. [31] . Wikidata. wikidata.org. → on this site
  5. [32] . Wikidata. wikidata.org. → on this site
  6. [33] . Wikidata. wikidata.org. → on this site
  7. [40] . Wikidata. wikidata.org. → on this site
  8. [41] . Wikidata. wikidata.org. → on this site
  9. [42] . Wikidata. wikidata.org. → on this site
  10. [43] . Wikidata. wikidata.org. → on this site
  11. [44] . Wikidata. wikidata.org. → on this site
  12. [45] . Wikidata. wikidata.org. → on this site
  13. [46] . Wikidata. wikidata.org. → on this site
  14. [47] . Wikidata. wikidata.org. → on this site
  15. [48] . Wikidata. wikidata.org. → on this site
  16. [49] . Wikidata. wikidata.org. → on this site
  17. [50] . Wikidata. wikidata.org. → on this site
  18. [51] . Wikidata. wikidata.org. → on this site
  19. [52] . Wikidata. wikidata.org. → on this site
  20. [53] . Wikidata. wikidata.org. → on this site
  21. [54] . Wikidata. wikidata.org. → on this site
  22. [55] . Wikidata. wikidata.org. → on this site
  23. [63] . Wikidata. wikidata.org. → on this site
  24. [65] . Wikidata. wikidata.org. → on this site
  25. [66] . Wikidata. wikidata.org. → on this site
  26. [67] . Wikidata. wikidata.org. → on this site
  27. [68] . Wikidata. wikidata.org. → on this site
  28. [70] . Wikidata. wikidata.org. → on this site
  29. [71] . Wikidata. wikidata.org. → on this site
  30. [72] . Wikidata. wikidata.org. → on this site
  31. [73] . Wikidata. wikidata.org. → on this site
  32. [75] . Wikidata. wikidata.org. → on this site
  33. [76] . Wikidata. wikidata.org. → on this site
  34. [77] . Wikidata. wikidata.org. → on this site
  35. [78] . Wikidata. wikidata.org. → on this site
  36. [57] . Wikidata. wikidata.org. → on this site

Class ancestry

  1. [1] . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [9] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [60] . Wikidata sitelinks. wikidata.org.
  3. [61] . Wikidata aliases. wikidata.org.

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Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). Jan Hendrik Oort. Retrieved April 10, 2026, from https://4ort.xyz/entity/jan-hendrik-oort
MLA “Jan Hendrik Oort.” 4ort.xyz Knowledge Graph, 4ort.xyz, 10 Apr. 2026, https://4ort.xyz/entity/jan-hendrik-oort.
BibTeX @misc{4ortxyz_jan-hendrik-oort_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Jan Hendrik Oort}}, year = {2026}, url = {https://4ort.xyz/entity/jan-hendrik-oort}, note = {Accessed: 2026-04-10}}
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