Jacobus Kapteyn

Dutch astronomer, best known for his extensive studies of the Milky Way and as the first discoverer of evidence for galactic rotation (1851-1922)
Person human Q156892
Jacobus Kapteyn
Jan Veth · Public Domain · Wikimedia
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Jacobus Kapteyn

Summary

Jacobus Kapteyn is a human[1]. He was born in Barneveld[2]. He was born on January 19, 1851[3]. He died in Amsterdam[4]. He died on June 18, 1922[5]. He worked as an astronomer[6], university teacher[7], and physicist[8]. He ranks in the top 0.73% of human entities by monthly Wikipedia readership (84 views/month, #7,287 of 1,000,298).[9]

Key Facts

  • Jacobus Kapteyn's place of birth was Barneveld[2].
  • Born in Utrecht[10], Jacobus Kapteyn…
  • Jacobus Kapteyn died in Amsterdam[4].
  • Jacobus Kapteyn was born on January 19, 1851[3].
  • Jacobus Kapteyn was born on 1851[11].
  • Jacobus Kapteyn died on June 18, 1922[5].
  • Jacobus Kapteyn died on 1922[12].
  • Jacobus Kapteyn is buried at Westerveld[13].
  • Jacobus Kapteyn held citizenship in Kingdom of the Netherlands[14].
  • Dutch was Jacobus Kapteyn's native language[15].
  • Jacobus Kapteyn's professions included astronomer[6].
  • Jacobus Kapteyn worked as a university teacher[7].
  • Jacobus Kapteyn worked as a physicist[8].
  • Jacobus Kapteyn's field of work was astronomy[16].
  • Jacobus Kapteyn was employed by Leiden Observatory[17].
  • Among Jacobus Kapteyn's employers was University of Groningen[18].
  • Jacobus Kapteyn was employed by University of Groningen[19].
  • Jacobus Kapteyn was educated at Utrecht University[20].
  • Jacobus Kapteyn's doctoral advisor was Cornelius Hubertus Carolus Grinwis[21].
  • A notable student of Jacobus Kapteyn was Jan Hendrik Oort[22].
  • Jacobus Kapteyn received the Pour le Mérite for Sciences and Arts order[23].
  • Jacobus Kapteyn received the Gold Medal of the Royal Astronomical Society[24].
  • Jacobus Kapteyn received the Bruce Medal[25].
  • Jacobus Kapteyn received the Fellow of the Royal Society of Edinburgh[26].
  • Jacobus Kapteyn received the Honorary Fellow of the Royal Society of Edinburgh[27].

Body

Origins and Family

Recorded place of birth include Barneveld[2], a village[28], in Netherlands[29] and Utrecht[10], a city[30], in Netherlands[31]. Recorded date of birth include January 19, 1851[3] and 1851[11]. Dutch was Jacobus Kapteyn's native language[15].

Education

Jacobus Kapteyn was educated at Utrecht University[20]. His doctoral advisor was Cornelius Hubertus Carolus Grinwis[21]. He earned the academic degree of doctorate[32].

Career and Affiliations

Recorded occupations include astronomer[6], university teacher[7], and physicist[8]. Jacobus Kapteyn's field of work was astronomy[16]. Employers include Leiden Observatory[17], a university observatory[33], in Netherlands[34], founded in 1633[35] and University of Groningen[18], a public research university[36], in Netherlands[37], founded in 1614[38], headquartered in Groningen[39]. A notable student of him was Jan Hendrik Oort[22]. Doctoral students include Willem de Sitter[40], an astronomer[41], 1872–1934[42], of Kingdom of the Netherlands[43], awarded the Gold Medal of the Royal Astronomical Society[44], specialised in astronomy[45]; Jean Jacques Raimond, Jr.[46], an astronomer[47], 1903–1961[48], of Kingdom of the Netherlands[49]; Pieter Johannes van Rhijn[50], an astronomer[51], 1886–1960[52], of Kingdom of the Netherlands[53], specialised in astronomy[54]; Samuël Cornelis Meijering[55], 1882–1943[56]; W. J. A. Schouten[57], 1893–1971[58]; and Etine Imke Smid[59].

Recognition

Awards received include Pour le Mérite for Sciences and Arts order[23], a civil decoration[60], in Prussia[61], founded in 1842[62]; Gold Medal of the Royal Astronomical Society[24], a science award[63], in United Kingdom[64], founded in 1824[65]; Bruce Medal[25], an award[66], in United States[67], founded in 1898[68]; Fellow of the Royal Society of Edinburgh[26], a fellowship award[69], in United Kingdom[70]; Honorary Fellow of the Royal Society of Edinburgh[27]; and Foreign Member of the Royal Society[71], a fellowship award[72], in United Kingdom[73].

Death and Burial

Recorded date of death include June 18, 1922[5] and 1922[12]. Jacobus Kapteyn died in Amsterdam[4]. He is buried at Westerveld[13].

Works and Contributions

Things named for Jacobus Kapteyn include Kapteyn's Star[74], a subdwarf star[75]; Kapteyn[76], an impact crater[77]; Kapteyn Astronomical Institute[78]; and Jacobus Kapteyn Telescope[79].

Why It Matters

Jacobus Kapteyn ranks in the top 0.73% of human entities by monthly Wikipedia readership (84 views/month, #7,287 of 1,000,298).[9] He has Wikipedia articles in 25 language editions, a strong signal of global cultural recognition.[80] He is known by 41 alternative names across languages and contexts.[81]

He has been cited as an influence by Frits Zernike[82], a physicist[83], 1888–1966[84], of Kingdom of the Netherlands[85], awarded the Rumford Medal[86], specialised in physics[87].

He is credited with the discovery of Kapteyn's Star[88], a subdwarf star[89]. Entities named for him include Kapteyn's Star[74], a subdwarf star[75]; Kapteyn[76], an impact crater[77]; Kapteyn Astronomical Institute[78]; and Jacobus Kapteyn Telescope[79].

His notable doctoral advisees include Willem de Sitter[90], an astronomer[91], 1872–1934[92], of Kingdom of the Netherlands[93], awarded the Gold Medal of the Royal Astronomical Society[94], specialised in astronomy[95]; Pieter Johannes van Rhijn[96], an astronomer[97], 1886–1960[98], of Kingdom of the Netherlands[99], specialised in astronomy[100]; and Jean Jacques Raimond, Jr.[101], an astronomer[102], 1903–1961[103], of Kingdom of the Netherlands[104].

FAQs

Where was Jacobus Kapteyn born?

Jacobus Kapteyn's place of birth was Barneveld[2].

Where did Jacobus Kapteyn die?

Jacobus Kapteyn passed away in Amsterdam[4].

What did Jacobus Kapteyn do for work?

Jacobus Kapteyn worked as astronomer[6], university teacher[7], and physicist[8].

Where did Jacobus Kapteyn go to school?

Jacobus Kapteyn was educated at Utrecht University[20].

What awards did Jacobus Kapteyn receive?

Honors received include Pour le Mérite for Sciences and Arts order[23], Gold Medal of the Royal Astronomical Society[24], Bruce Medal[25], and Fellow of the Royal Society of Edinburgh[26].

Who did Jacobus Kapteyn influence?

Jacobus Kapteyn has been cited as an influence by Frits Zernike[82].

What did Jacobus Kapteyn discover?

Jacobus Kapteyn is credited as discoverer of Kapteyn's Star[88].

References

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

Direct Wikidata claims

  1. [2] . Catalogus Professorum Academiae Groninganae. Retrieved . wikidata.org.
  2. [10] . Onze Hoogleeraren. wikidata.org.
  3. [4] . Catalogus Professorum Academiae Groninganae. Retrieved . wikidata.org.
  4. [14] . wikidata.org.
  5. [20] . wikidata.org.
  6. [16] . wikidata.org.
  7. [15] . wikidata.org.
  8. [6] . wikidata.org.
  9. [7] . Onze Hoogleeraren. Retrieved . wikidata.org.
  10. [8] . Retrieved . wikidata.org.
  11. [17] . wikidata.org.
  12. [18] . rse.org.uk. rse.org.uk. Provenance: wikidata.org.
  13. [19] . Catalogus Professorum Academiae Groninganae. Retrieved . wikidata.org.
  14. [13] . Online Begraafplaatsen. Retrieved . wikidata.org.
  15. [23] . wikidata.org.
  16. [24] . wikidata.org.
  17. [25] . phys-astro.sonoma.edu. phys-astro.sonoma.edu. Provenance: wikidata.org.
  18. [26] . rse.org.uk. rse.org.uk. Provenance: wikidata.org.
  19. [27] . wikidata.org.
  20. [71] . Complete List of Royal Society Fellows 1660-2007. wikidata.org.
  21. [21] . Mathematics Genealogy Project. wikidata.org.
  22. [40] . Mathematics Genealogy Project. Retrieved . genealogy.ams.org. Provenance: wikidata.org.
  23. [46] . wikidata.org.
  24. [50] . Mathematics Genealogy Project. Retrieved . genealogy.ams.org. Provenance: wikidata.org.
  25. [55] . Mathematics Genealogy Project. wikidata.org.
  26. [57] . Mathematics Genealogy Project. wikidata.org.
  27. [59] . Mathematics Genealogy Project. wikidata.org.
  28. [32] . Onze Hoogleeraren. wikidata.org.
  29. [3] . BnF authorities. Retrieved . wikidata.org.
  30. [11] . Online Begraafplaatsen. Retrieved . wikidata.org.
  31. [5] . BnF authorities. Retrieved . wikidata.org.
  32. [12] . Online Begraafplaatsen. Retrieved . wikidata.org.
  33. [22] . wikidata.org.

Inverse relationships (entities pointing at this one)

  1. [82] . wikidata.org. → on this site
  2. [88] . wikidata.org. → on this site
  3. [90] . wikidata.org. → on this site
  4. [96] . wikidata.org. → on this site
  5. [101] . wikidata.org. → on this site
  6. [74] . wikidata.org. → on this site
  7. [76] . wikidata.org. → on this site
  8. [78] . wikidata.org. → on this site
  9. [79] . 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. [33] . Wikidata. wikidata.org. → on this site
  6. [34] . Wikidata. wikidata.org. → on this site
  7. [35] . Wikidata. wikidata.org. → on this site
  8. [36] . Wikidata. wikidata.org. → on this site
  9. [37] . Wikidata. wikidata.org. → on this site
  10. [38] . Wikidata. wikidata.org. → on this site
  11. [39] . Wikidata. wikidata.org. → on this site
  12. [60] . Wikidata. wikidata.org. → on this site
  13. [61] . Wikidata. wikidata.org. → on this site
  14. [62] . Wikidata. wikidata.org. → on this site
  15. [63] . Wikidata. wikidata.org. → on this site
  16. [64] . Wikidata. wikidata.org. → on this site
  17. [65] . Wikidata. wikidata.org. → on this site
  18. [66] . Wikidata. wikidata.org. → on this site
  19. [67] . Wikidata. wikidata.org. → on this site
  20. [68] . Wikidata. wikidata.org. → on this site
  21. [69] . Wikidata. wikidata.org. → on this site
  22. [70] . Wikidata. wikidata.org. → on this site
  23. [72] . Wikidata. wikidata.org. → on this site
  24. [73] . Wikidata. wikidata.org. → on this site
  25. [41] . Wikidata. wikidata.org. → on this site
  26. [42] . Wikidata. wikidata.org. → on this site
  27. [43] . Wikidata. wikidata.org. → on this site
  28. [44] . Wikidata. wikidata.org. → on this site
  29. [45] . Wikidata. wikidata.org. → on this site
  30. [47] . Wikidata. wikidata.org. → on this site
  31. [48] . Wikidata. wikidata.org. → on this site
  32. [49] . Wikidata. wikidata.org. → on this site
  33. [51] . Wikidata. wikidata.org. → on this site
  34. [52] . Wikidata. wikidata.org. → on this site
  35. [53] . Wikidata. wikidata.org. → on this site
  36. [54] . Wikidata. wikidata.org. → on this site
  37. [56] . Wikidata. wikidata.org. → on this site
  38. [58] . Wikidata. wikidata.org. → on this site
  39. [83] . Wikidata. wikidata.org. → on this site
  40. [84] . Wikidata. wikidata.org. → on this site
  41. [85] . Wikidata. wikidata.org. → on this site
  42. [86] . Wikidata. wikidata.org. → on this site
  43. [87] . Wikidata. wikidata.org. → on this site
  44. [89] . Wikidata. wikidata.org. → on this site
  45. [91] . Wikidata. wikidata.org. → on this site
  46. [92] . Wikidata. wikidata.org. → on this site
  47. [93] . Wikidata. wikidata.org. → on this site
  48. [94] . Wikidata. wikidata.org. → on this site
  49. [95] . Wikidata. wikidata.org. → on this site
  50. [97] . Wikidata. wikidata.org. → on this site
  51. [98] . Wikidata. wikidata.org. → on this site
  52. [99] . Wikidata. wikidata.org. → on this site
  53. [100] . Wikidata. wikidata.org. → on this site
  54. [102] . Wikidata. wikidata.org. → on this site
  55. [103] . Wikidata. wikidata.org. → on this site
  56. [104] . Wikidata. wikidata.org. → on this site
  57. [75] . Wikidata. wikidata.org. → on this site
  58. [77] . 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. [80] . Wikidata sitelinks. wikidata.org.
  3. [81] . Wikidata aliases. wikidata.org.

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Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 9d ago · Nyuhn · 2026-07-10 view diff on Wikidata ↗
    Award received Pour le Mérite for Sciences and Arts order, Gold Medal of the Royal Astronomical Society, Bruce Medal +4
    Member of
    Place of death Amsterdam
    Archives at University of Groningen Library
    + 34 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/40849|batch #40849]]: ZGBK ID"
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