Carl Keenan Seyfert

American astronomer (1911–1960)
Person human Q453675
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Carl Keenan Seyfert

Summary

Carl Keenan Seyfert is a human[1]. Born in Cleveland[2], he… he was born on +1911-02-11T00:00:00Z[3]. He died in Nashville[4]. He died on +1960-06-13T00:00:00Z[5]. He worked as an astronomer[6] and university teacher[7]. He ranks in the top 0.73% of human entities by monthly Wikipedia readership (9 views/month, #7,293 of 1,000,298).[8]

Key Facts

  • Carl Keenan Seyfert was born in Cleveland[2].
  • Carl Keenan Seyfert died in Nashville[4].
  • Carl Keenan Seyfert was born on +1911-02-11T00:00:00Z[3].
  • Carl Keenan Seyfert died on +1960-06-13T00:00:00Z[5].
  • Among Carl Keenan Seyfert's spouses was Muriel Mussells Seyfert[9].
  • Carl Keenan Seyfert held citizenship in United States[10].
  • Carl Keenan Seyfert worked as an astronomer[6].
  • Carl Keenan Seyfert's professions included university teacher[7].
  • Carl Keenan Seyfert's field of work was astronomy[11].
  • Among Carl Keenan Seyfert's employers was Case Western Reserve University[12].
  • Among Carl Keenan Seyfert's employers was Vanderbilt University[13].
  • Carl Keenan Seyfert's education included a stint at Harvard University[14].
  • Carl Keenan Seyfert's doctoral advisor was Harlow Shapley[15].
  • Carl Keenan Seyfert is recorded as male[16].
  • Carl Keenan Seyfert's instance of is recorded as human[17].
  • The cause of death was traffic collision[18].
  • Carl Keenan Seyfert's Freebase ID is recorded as /m/0360p3[19].
  • Carl Keenan Seyfert's Open Library ID is recorded as OL2364552A[20].
  • Carl Keenan Seyfert's family name is recorded as Seyfert[21].
  • Carl Keenan Seyfert's given name is recorded as Carl[22].
  • Carl Keenan Seyfert's manner of death is recorded as accidental death[23].
  • Carl Keenan Seyfert's described by source is recorded as Astronomers: A Biographical Reference[24].
  • Carl Keenan Seyfert's Encyclopædia Britannica Online ID is recorded as biography/Carl-K-Seyfert[25].
  • Carl Keenan Seyfert's name in native language is recorded as {'lang': 'en', 'text': 'Carl K. Seyfert'}[26].
  • Carl Keenan Seyfert's Treccani ID is recorded as carl-keenan-seyfert[27].

Body

Origins and Family

Carl Keenan Seyfert was born in Cleveland[2]. He was born on +1911-02-11T00:00:00Z[3].

Education

Carl Keenan Seyfert was educated at Harvard University[14]. His doctoral advisor was Harlow Shapley[15].

Career and Affiliations

Recorded occupations include astronomer[6] and university teacher[7]. Carl Keenan Seyfert's field of work was astronomy[11]. Employers include Case Western Reserve University[12], a private university[28], in United States[29], founded in 1967[30], headquartered in Cleveland[31] and Vanderbilt University[13], a private university[32], in United States[33], founded in 1873[34], headquartered in Nashville[35].

Personal Life

Among Carl Keenan Seyfert's spouses was Muriel Mussells Seyfert[9].

Death and Burial

Carl Keenan Seyfert died on +1960-06-13T00:00:00Z[5]. He passed away in Nashville[4]. The cause of death was traffic collision[18].

Works and Contributions

Things named for Carl Keenan Seyfert include Seyfert galaxy[36], an astronomical object type[37]; Seyfert's Sextet[38], a compact group of galaxies[39]; and Seyfert[40], a lunar crater[41].

Why It Matters

Carl Keenan Seyfert ranks in the top 0.73% of human entities by monthly Wikipedia readership (9 views/month, #7,293 of 1,000,298).[8] He has Wikipedia articles in 20 language editions, a strong signal of global cultural recognition.[42] He is known by 8 alternative names across languages and contexts.[43]

He is credited with the discovery of Seyfert's Sextet[44], a compact group of galaxies[45]. Entities named for him include Seyfert galaxy[36], an astronomical object type[37]; Seyfert's Sextet[38], a compact group of galaxies[39]; and Seyfert[40], a lunar crater[41].

FAQs

Where was Carl Keenan Seyfert born?

Carl Keenan Seyfert's place of birth was Cleveland[2].

Where did Carl Keenan Seyfert die?

Carl Keenan Seyfert died in Nashville[4].

Who was Carl Keenan Seyfert married to?

Carl Keenan Seyfert's spouses include Muriel Mussells Seyfert[9].

What did Carl Keenan Seyfert do for work?

Carl Keenan Seyfert worked as astronomer[6] and university teacher[7].

Where did Carl Keenan Seyfert go to school?

Carl Keenan Seyfert was educated at Harvard University[14].

What did Carl Keenan Seyfert discover?

Carl Keenan Seyfert is credited as discoverer of Seyfert's Sextet[44].

References

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

Direct Wikidata claims

  1. [2] . wikidata.org.
  2. [4] . wikidata.org.
  3. [16] . wikidata.org.
  4. [9] . wikidata.org.
  5. [10] . wikidata.org.
  6. [17] . wikidata.org.
  7. [14] . wikidata.org.
  8. [11] . wikidata.org.
  9. [6] . wikidata.org.
  10. [7] . wikidata.org.
  11. [12] . wikidata.org.
  12. [13] . wikidata.org.
  13. [15] . wikidata.org.
  14. [18] . wikidata.org.
  15. [3] . wikidata.org.
  16. [5] . wikidata.org.
  17. [19] . Freebase Data Dumps. wikidata.org.
  18. [20] . wikidata.org.
  19. [21] . wikidata.org.
  20. [22] . wikidata.org.
  21. [23] . wikidata.org.
  22. [24] . wikidata.org.
  23. [25] . wikidata.org.
  24. [26] . wikidata.org.
  25. [27] . wikidata.org.

Inverse relationships (entities pointing at this one)

  1. [44] . wikidata.org. → on this site
  2. [36] . wikidata.org. → on this site
  3. [38] . wikidata.org. → on this site
  4. [40] . 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. [34] . Wikidata. wikidata.org. → on this site
  8. [35] . Wikidata. wikidata.org. → on this site
  9. [45] . Wikidata. wikidata.org. → on this site
  10. [37] . Wikidata. wikidata.org. → on this site
  11. [39] . Wikidata. wikidata.org. → on this site
  12. [41] . Wikidata. wikidata.org. → on this site

Class ancestry

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

Aggregate / graph-position facts

  1. [8] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [42] . Wikidata sitelinks. wikidata.org.
  3. [43] . 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). Carl Keenan Seyfert. Retrieved April 10, 2026, from https://4ort.xyz/entity/carl-keenan-seyfert
MLA “Carl Keenan Seyfert.” 4ort.xyz Knowledge Graph, 4ort.xyz, 10 Apr. 2026, https://4ort.xyz/entity/carl-keenan-seyfert.
BibTeX @misc{4ortxyz_carl-keenan-seyfert_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Carl Keenan Seyfert}}, year = {2026}, url = {https://4ort.xyz/entity/carl-keenan-seyfert}, note = {Accessed: 2026-04-10}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Carl Keenan Seyfert — https://4ort.xyz/entity/carl-keenan-seyfert (retrieved 2026-04-10)

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