HR 8799 c

extrasolar planet
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HR 8799 c

Summary

HR 8799 c is an exoplanet[1]. It draws 7 Wikipedia views per month (exoplanet category, ranking #90 of 578).[2]

Key Facts

  • HR 8799 c's image is recorded as Exoplanet Comparison HR 8799 c.png[3].
  • HR 8799 c's instance of is recorded as exoplanet[4].
  • HR 8799 c's constellation is recorded as Pegasus[5].
  • HR 8799 c's Commons category is recorded as HR 8799 c[6].
  • HR 8799 c's parent astronomical body is recorded as Q584300[7].
  • HR 8799 c's catalog code is recorded as HD 218396c[8].
  • HR 8799 c's catalog code is recorded as HR 8799c[9].
  • HR 8799 c's catalog code is recorded as TIC 245368902c[10].
  • HR 8799 c's time of discovery or invention is recorded as +2008-11-13T00:00:00Z[11].
  • HR 8799 c's time of discovery or invention is recorded as +2008-11-00T00:00:00Z[12].
  • HR 8799 c's Freebase ID is recorded as /m/04vwdh3[13].
  • HR 8799 c's discovery method is recorded as direct imaging[14].
  • HR 8799 c's orbital eccentricity is recorded as {'amount': '+0.5'}[15].
  • HR 8799 c's orbital inclination is recorded as {'unit': 'Q28390', 'amount': '+37'}[16].
  • HR 8799 c's mass is recorded as {'unit': 'Q651336', 'amount': '+8.3'}[17].
  • HR 8799 c's radius is recorded as {'unit': 'Q3421309', 'amount': '+1.3'}[18].
  • HR 8799 c's orbital period is recorded as {'unit': 'Q573', 'amount': '+67571.25'}[19].
  • HR 8799 c's angular distance is recorded as {'unit': 'Q829073', 'amount': '+1.088832'}[20].
  • HR 8799 c's parallax is recorded as {'unit': 'Q21500224', 'amount': '+24.2175'}[21].
  • HR 8799 c's semi-major axis of an orbit is recorded as {'unit': 'Q1811', 'amount': '+38'}[22].
  • HR 8799 c's SIMBAD ID is recorded as HD 218396c[23].
  • HR 8799 c's Wolfram Language entity code is recorded as Entity["Exoplanet", "HR8799c"][24].
  • HR 8799 c's Extrasolar Planets Encyclopaedia exoplanet ID is recorded as hr_8799_c--517[25].
  • HR 8799 c's NASA Exoplanet Archive ID is recorded as HR 8799 c[26].
  • HR 8799 c's right ascension is recorded as {'unit': 'Q28390', 'amount': '+346.86964871069460'}[27].

Body

Designation and Status

HR 8799 c's instance of is recorded as exoplanet[4].

History and Context

Catalog codes include HD 218396c[8], HR 8799c[9], and TIC 245368902c[10].

Why It Matters

HR 8799 c draws 7 Wikipedia views per month (exoplanet category, ranking #90 of 578).[2] It has Wikipedia articles in 14 language editions, a strong signal of global cultural recognition.[28] It is known by 6 alternative names across languages and contexts.[29]

References

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

Direct Wikidata claims

  1. [3] . wikidata.org.
  2. [4] . SIMBAD. wikidata.org.
  3. [5] . wikidata.org.
  4. [6] . wikidata.org.
  5. [7] . SIMBAD. wikidata.org.
  6. [8] . SIMBAD. wikidata.org.
  7. [9] . SIMBAD. wikidata.org.
  8. [10] . Exoplanet Archive. wikidata.org.
  9. [11] . wikidata.org.
  10. [12] . Direct imaging of multiple planets orbiting the star HR 8799. wikidata.org.
  11. [13] . Freebase Data Dumps. wikidata.org.
  12. [14] . Direct imaging of multiple planets orbiting the star HR 8799. wikidata.org.
  13. [15] . Astrometric monitoring of the HR 8799 planets: orbit constraints from self-consistent measurements. wikidata.org.
  14. [16] . Astrometric monitoring of the HR 8799 planets: orbit constraints from self-consistent measurements. wikidata.org.
  15. [17] . The Gemini Planet Imager Exoplanet Survey: giant planet and brown dwarf demographics from 10 to 100 au. wikidata.org.
  16. [18] . Spatially resolved spectroscopy of the exoplanet HR 8799 C. wikidata.org.
  17. [19] . Astrometric monitoring of the HR 8799 planets: orbit constraints from self-consistent measurements. wikidata.org.
  18. [20] . Extrasolar Planets Encyclopaedia. wikidata.org.
  19. [21] . Gaia Data Release 2. wikidata.org.
  20. [22] . Astrometric monitoring of the HR 8799 planets: orbit constraints from self-consistent measurements. wikidata.org.
  21. [23] . wikidata.org.
  22. [24] . wikidata.org.
  23. [25] . wikidata.org.
  24. [26] . wikidata.org.
  25. [27] . Gaia Data Release 2. wikidata.org.

Class ancestry

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

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [28] . Wikidata sitelinks. wikidata.org.
  3. [29] . Wikidata aliases. 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). HR 8799 c. Retrieved May 3, 2026, from https://4ort.xyz/entity/hr-8799-c
MLA “HR 8799 c.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/hr-8799-c.
BibTeX @misc{4ortxyz_hr-8799-c_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{HR 8799 c}}, year = {2026}, url = {https://4ort.xyz/entity/hr-8799-c}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): HR 8799 c — https://4ort.xyz/entity/hr-8799-c (retrieved 2026-05-03)

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