23P/Brorsen–Metcalf

periodic comet with 70 year orbit
Thing periodic_comet Q287356
23P/Brorsen–Metcalf
Edward Emerson Barnard · Public Domain · Wikimedia
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23P/Brorsen–Metcalf

Summary

23P/Brorsen–Metcalf is a periodic comet[1]. 23P/Brorsen–Metcalf draws 11 Wikipedia views per month (periodic_comet category, ranking #23 of 183).[2]

Key Facts

  • 23P/Brorsen–Metcalf is credited with the discovery of Theodor Brorsen[3].
  • 23P/Brorsen–Metcalf is credited with the discovery of Joel Hastings Metcalf[4].
  • 23P/Brorsen–Metcalf's image is recorded as Comet Brorsen-Metcalf by E.E. Barnard on 6 October 1919.jpg[5].
  • 23P/Brorsen–Metcalf's instance of is recorded as periodic comet[6].
  • 23P/Brorsen–Metcalf's instance of is recorded as Halley-type comet[7].
  • 23P/Brorsen–Metcalf's instance of is recorded as near-Earth object[8].
  • 23P/Brorsen–Metcalf's follows is recorded as 22P/Kopff[9].
  • 23P/Brorsen–Metcalf's followed by is recorded as 24P/Schaumasse[10].
  • 23P/Brorsen–Metcalf's Commons category is recorded as 23P/Brorsen–Metcalf[11].
  • 23P/Brorsen–Metcalf's parent astronomical body is recorded as Sun[12].
  • 23P/Brorsen–Metcalf's provisional designation is recorded as 23P/1989 N1[13].
  • 23P/Brorsen–Metcalf's provisional designation is recorded as 1989 X[14].
  • 23P/Brorsen–Metcalf's provisional designation is recorded as 23P/1919 Q1[15].
  • 23P/Brorsen–Metcalf's provisional designation is recorded as 1919 III[16].
  • 23P/Brorsen–Metcalf's provisional designation is recorded as 23P/1847 O1[17].
  • 23P/Brorsen–Metcalf's provisional designation is recorded as 1847 V[18].
  • 23P/Brorsen–Metcalf's provisional designation is recorded as 1919b[19].
  • 23P/Brorsen–Metcalf's provisional designation is recorded as 1989o[20].
  • 23P/Brorsen–Metcalf's time of discovery or invention is recorded as +1847-07-20T00:00:00Z[21].
  • 23P/Brorsen–Metcalf's Freebase ID is recorded as /m/02809vf[22].
  • 23P/Brorsen–Metcalf's JPL Small-Body Database SPK-ID is recorded as 1000009[23].
  • 23P/Brorsen–Metcalf's orbital eccentricity is recorded as {'amount': '+0.971952257924851'}[24].
  • 23P/Brorsen–Metcalf's absolute magnitude is recorded as {'amount': '+7.8'}[25].
  • 23P/Brorsen–Metcalf's orbital inclination is recorded as {'unit': 'Q28390', 'amount': '+19.33394046981863'}[26].
  • 23P/Brorsen–Metcalf's orbital period is recorded as {'unit': 'Q573', 'amount': '+25758.37362225135'}[27].

Body

Works and Contributions

Credited discoveries include Theodor Brorsen[3], an astronomer[28], 1819–1895[29], of Kingdom of Denmark[30], specialised in astronomy[31] and Joel Hastings Metcalf[4], an astronomer[32], 1866–1925[33], of United States[34], specialised in astronomy[35].

Why It Matters

23P/Brorsen–Metcalf draws 11 Wikipedia views per month (periodic_comet category, ranking #23 of 183).[2] 23P/Brorsen–Metcalf has Wikipedia articles in 9 language editions, a strong signal of global cultural recognition.[36]

References

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

Direct Wikidata claims

  1. [5] . wikidata.org.
  2. [6] . wikidata.org.
  3. [7] . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  4. [8] . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  5. [3] . wikidata.org.
  6. [4] . wikidata.org.
  7. [9] . wikidata.org.
  8. [10] . wikidata.org.
  9. [11] . wikidata.org.
  10. [12] . wikidata.org.
  11. [13] . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  12. [14] . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  13. [15] . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  14. [16] . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  15. [17] . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  16. [18] . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  17. [19] . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  18. [20] . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  19. [21] . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  20. [22] . Freebase Data Dumps. wikidata.org.
  21. [23] . JPL Small-Body Database. Retrieved . wikidata.org.
  22. [24] . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  23. [25] . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  24. [26] . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  25. [27] . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.

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

Class ancestry

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

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [36] . Wikidata sitelinks. wikidata.org.

📑 Cite this page

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). 23P/Brorsen–Metcalf. Retrieved May 3, 2026, from https://4ort.xyz/entity/23p-brorsen-metcalf
MLA “23P/Brorsen–Metcalf.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/23p-brorsen-metcalf.
BibTeX @misc{4ortxyz_23p-brorsen-metcalf_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{23P/Brorsen–Metcalf}}, year = {2026}, url = {https://4ort.xyz/entity/23p-brorsen-metcalf}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): 23P/Brorsen–Metcalf — https://4ort.xyz/entity/23p-brorsen-metcalf (retrieved 2026-05-03)

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