HD 191939 b

extrasolar planet
Thing exoplanet Q113592454
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HD 191939 b

Summary

HD 191939 b is an exoplanet[1].

Key Facts

  • HD 191939 b's instance of is recorded as exoplanet[2].
  • HD 191939 b's constellation is recorded as Draco[3].
  • HD 191939 b's parent astronomical body is recorded as Q85765154[4].
  • HD 191939 b's catalog code is recorded as TOI-1339b[5].
  • HD 191939 b's catalog code is recorded as TOI-1339.01[6].
  • HD 191939 b's catalog code is recorded as TIC 269701147b[7].
  • HD 191939 b's catalog code is recorded as TIC 269701147.01[8].
  • HD 191939 b's time of discovery or invention is recorded as +2020-09-00T00:00:00Z[9].
  • HD 191939 b's discovery method is recorded as transit method[10].
  • HD 191939 b's orbital eccentricity is recorded as {'unit': '1', 'amount': '+0.031'}[11].
  • HD 191939 b's orbital inclination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+88.1'}[12].
  • HD 191939 b's mass is recorded as {'unit': 'http://www.wikidata.org/entity/Q681996', 'amount': '+10'}[13].
  • HD 191939 b's radius is recorded as {'unit': 'http://www.wikidata.org/entity/Q1155470', 'amount': '+3.41'}[14].
  • HD 191939 b's orbital period is recorded as {'unit': 'http://www.wikidata.org/entity/Q573', 'amount': '+8.8803256'}[15].
  • HD 191939 b's parallax is recorded as {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+18.6247'}[16].
  • HD 191939 b's semi-major axis of an orbit is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+0.0804'}[17].
  • HD 191939 b's argument of periapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+5'}[18].
  • HD 191939 b's right ascension is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+302.0256247'}[19].
  • HD 191939 b's declination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+66.8503014'}[20].
  • HD 191939 b's epoch is recorded as J2000.0[21].
  • HD 191939 b's declination component of proper motion is recorded as {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-63.909'}[22].
  • HD 191939 b's right ascension component of proper motion is recorded as {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '+150.256'}[23].

Body

Definition and Type

HD 191939 b's instance of is recorded as exoplanet[2].

References

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

Direct Wikidata claims

  1. [2] . SIMBAD. wikidata.org.
  2. [3] . wikidata.org.
  3. [4] . SIMBAD. wikidata.org.
  4. [5] . Exoplanet Archive. wikidata.org.
  5. [6] . Exoplanet Archive. wikidata.org.
  6. [7] . Exoplanet Archive. wikidata.org.
  7. [8] . Exoplanet Archive. wikidata.org.
  8. [9] . HD 191939: Three Sub-Neptunes Transiting a Sun-like Star Only 54 pc Away. wikidata.org.
  9. [10] . HD 191939: Three Sub-Neptunes Transiting a Sun-like Star Only 54 pc Away. wikidata.org.
  10. [11] . HD 191939 revisited: New and refined planet mass determinations, and a new planet in the habitable zone. wikidata.org.
  11. [12] . HD 191939 revisited: New and refined planet mass determinations, and a new planet in the habitable zone. wikidata.org.
  12. [13] . HD 191939 revisited: New and refined planet mass determinations, and a new planet in the habitable zone. wikidata.org.
  13. [14] . HD 191939 revisited: New and refined planet mass determinations, and a new planet in the habitable zone. wikidata.org.
  14. [15] . HD 191939 revisited: New and refined planet mass determinations, and a new planet in the habitable zone. wikidata.org.
  15. [16] . Gaia Data Release 2. wikidata.org.
  16. [17] . HD 191939 revisited: New and refined planet mass determinations, and a new planet in the habitable zone. wikidata.org.
  17. [18] . HD 191939 revisited: New and refined planet mass determinations, and a new planet in the habitable zone. wikidata.org.
  18. [19] . HD 191939: Three Sub-Neptunes Transiting a Sun-like Star Only 54 pc Away. wikidata.org.
  19. [20] . HD 191939: Three Sub-Neptunes Transiting a Sun-like Star Only 54 pc Away. wikidata.org.
  20. [21] . SIMBAD. wikidata.org.
  21. [22] . Gaia Data Release 2. wikidata.org.
  22. [23] . Gaia Data Release 2. wikidata.org.

Class ancestry

  1. [1] . Wikidata. 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). HD 191939 b. Retrieved May 7, 2026, from https://4ort.xyz/entity/hd-191939-b
MLA “HD 191939 b.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/hd-191939-b.
BibTeX @misc{4ortxyz_hd-191939-b_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{HD 191939 b}}, year = {2026}, url = {https://4ort.xyz/entity/hd-191939-b}, note = {Accessed: 2026-05-07}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): HD 191939 b — https://4ort.xyz/entity/hd-191939-b (retrieved 2026-05-07)

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