HR 8799 b

extrasolar planet
Place exoplanet Q1334636
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HR 8799 b

Summary

HR 8799 b is an exoplanet[1]. It draws 45 Wikipedia views per month (exoplanet category, ranking #66 of 578).[2]

Key Facts

  • HR 8799 b's image is recorded as Exoplanet Comparison HR 8799 b.png[3].
  • HR 8799 b's instance of is recorded as exoplanet[4].
  • HR 8799 b's constellation is recorded as Pegasus[5].
  • HR 8799 b's site of astronomical discovery is recorded as W. M. Keck Observatory[6].
  • HR 8799 b's site of astronomical discovery is recorded as Gemini Observatory[7].
  • HR 8799 b's Commons category is recorded as HR 8799 b[8].
  • HR 8799 b's parent astronomical body is recorded as Q584300[9].
  • HR 8799 b's catalog code is recorded as HD 218396b[10].
  • HR 8799 b's catalog code is recorded as HR 8799b[11].
  • HR 8799 b's catalog code is recorded as TIC 245368902b[12].
  • HR 8799 b's time of discovery or invention is recorded as +2008-11-13T00:00:00Z[13].
  • HR 8799 b's time of discovery or invention is recorded as +2008-11-00T00:00:00Z[14].
  • HR 8799 b's Freebase ID is recorded as /m/04vwdh0[15].
  • HR 8799 b's discovery method is recorded as direct imaging[16].
  • HR 8799 b's orbital eccentricity is recorded as {'amount': '+0.0'}[17].
  • HR 8799 b's orbital inclination is recorded as {'unit': 'Q28390', 'amount': '+38'}[18].
  • HR 8799 b's mass is recorded as {'unit': 'Q651336', 'amount': '+7.0'}[19].
  • HR 8799 b's radius is recorded as {'unit': 'Q3421309', 'amount': '+0.6'}[20].
  • HR 8799 b's orbital period is recorded as {'unit': 'Q573', 'amount': '+171667.5'}[21].
  • HR 8799 b's angular distance is recorded as {'unit': 'Q829073', 'amount': '+1.725888'}[22].
  • HR 8799 b's parallax is recorded as {'unit': 'Q21500224', 'amount': '+24.2175'}[23].
  • HR 8799 b's semi-major axis of an orbit is recorded as {'unit': 'Q1811', 'amount': '+67.96'}[24].
  • HR 8799 b's SIMBAD ID is recorded as HD 218396b[25].
  • HR 8799 b's Wolfram Language entity code is recorded as Entity["Exoplanet", "HR8799b"][26].
  • HR 8799 b's Extrasolar Planets Encyclopaedia exoplanet ID is recorded as hr_8799_b--516[27].

Body

Designation and Status

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

History and Context

Catalog codes include HD 218396b[10], HR 8799b[11], and TIC 245368902b[12].

Why It Matters

HR 8799 b draws 45 Wikipedia views per month (exoplanet category, ranking #66 of 578).[2] It has Wikipedia articles in 14 language editions, a strong signal of global cultural recognition.[28] It is known by 7 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] . wikidata.org.
  6. [8] . wikidata.org.
  7. [9] . SIMBAD. wikidata.org.
  8. [10] . SIMBAD. wikidata.org.
  9. [11] . SIMBAD. wikidata.org.
  10. [12] . Exoplanet Archive. wikidata.org.
  11. [13] . wikidata.org.
  12. [14] . Direct imaging of multiple planets orbiting the star HR 8799. wikidata.org.
  13. [15] . Freebase Data Dumps. wikidata.org.
  14. [16] . Direct imaging of multiple planets orbiting the star HR 8799. wikidata.org.
  15. [17] . Extrasolar Planets Encyclopaedia. wikidata.org.
  16. [18] . Astrometric monitoring of the HR 8799 planets: orbit constraints from self-consistent measurements. wikidata.org.
  17. [19] . Direct imaging of multiple planets orbiting the star HR 8799. wikidata.org.
  18. [20] . First light of the VLT planet finder SPHERE. wikidata.org.
  19. [21] . Astrometric monitoring of the HR 8799 planets: orbit constraints from self-consistent measurements. wikidata.org.
  20. [22] . Extrasolar Planets Encyclopaedia. wikidata.org.
  21. [23] . Gaia Data Release 2. wikidata.org.
  22. [24] . First light of the VLT planet finder SPHERE. III. New spectrophotometry and astrometry of the HR 8799 exoplanetary system. wikidata.org.
  23. [25] . wikidata.org.
  24. [26] . wikidata.org.
  25. [27] . 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 b. Retrieved May 3, 2026, from https://4ort.xyz/entity/hr-8799-b
MLA “HR 8799 b.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/hr-8799-b.
BibTeX @misc{4ortxyz_hr-8799-b_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{HR 8799 b}}, year = {2026}, url = {https://4ort.xyz/entity/hr-8799-b}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): HR 8799 b — https://4ort.xyz/entity/hr-8799-b (retrieved 2026-05-03)

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