Gliese 221 c

exoplanet in the constellation Orion
Place exoplanet Q16639259
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Gliese 221 c

Summary

Gliese 221 c is an exoplanet[1].

Key Facts

  • Gliese 221 c's instance of is recorded as exoplanet[2].
  • Gliese 221 c's constellation is recorded as Orion[3].
  • Gliese 221 c's parent astronomical body is recorded as Gliese 221[4].
  • Gliese 221 c's catalog code is recorded as GJ 221 c[5].
  • Gliese 221 c's catalog code is recorded as BD-06 1339c[6].
  • Gliese 221 c's catalog code is recorded as TIC 66914642c[7].
  • Gliese 221 c's time of discovery or invention is recorded as March 2013[8].
  • Gliese 221 c's discovery method is recorded as Doppler spectroscopy[9].
  • Gliese 221 c's orbital eccentricity is recorded as {'unit': '1', 'amount': '+0.31'}[10].
  • Gliese 221 c's M sin i is recorded as {'unit': 'http://www.wikidata.org/entity/Q651336', 'amount': '+0.17'}[11].
  • Gliese 221 c's mass is recorded as {'unit': 'http://www.wikidata.org/entity/Q651336', 'amount': '+0.17'}[12].
  • Gliese 221 c's orbital period is recorded as {'unit': 'http://www.wikidata.org/entity/Q573', 'amount': '+125.94'}[13].
  • Gliese 221 c's parallax is recorded as {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+49.3062'}[14].
  • Gliese 221 c's semi-major axis of an orbit is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+0.435'}[15].
  • Gliese 221 c's argument of periapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+41.0'}[16].
  • Gliese 221 c's right ascension is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+88.25118566332999'}[17].
  • Gliese 221 c's declination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '-5.99484501463722'}[18].
  • Gliese 221 c's epoch is recorded as J2000.0[19].
  • Gliese 221 c's declination component of proper motion is recorded as {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-346.721'}[20].
  • Gliese 221 c's right ascension component of proper motion is recorded as {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-1.045'}[21].
  • Gliese 221 c's time of periapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q14267', 'amount': '+2455265.2'}[22].

Body

Designation and Status

Gliese 221 c's instance of is recorded as exoplanet[2].

History and Context

Catalog codes include GJ 221 c[5], BD-06 1339c[6], and TIC 66914642c[7].

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] . SIMBAD. wikidata.org.
  5. [6] . SIMBAD. wikidata.org.
  6. [7] . Exoplanet Archive. wikidata.org.
  7. [8] . The HARPS search for southern extra-solar planets. XXXII. New multi-planet systems in the HARPS volume limited sample: a super-Earth and a Neptune in the habitable zone. wikidata.org.
  8. [9] . The HARPS search for southern extra-solar planets. XXXII. New multi-planet systems in the HARPS volume limited sample: a super-Earth and a Neptune in the habitable zone. wikidata.org.
  9. [10] . Frequency of planets orbiting M dwarfs in the Solar neighbourhood. wikidata.org.
  10. [11] . The HARPS search for southern extra-solar planets. XXXII. New multi-planet systems in the HARPS volume limited sample: a super-Earth and a Neptune in the habitable zone. wikidata.org.
  11. [12] . Extrasolar Planets Encyclopaedia. wikidata.org.
  12. [13] . The HARPS search for southern extra-solar planets. XXXII. New multi-planet systems in the HARPS volume limited sample: a super-Earth and a Neptune in the habitable zone. wikidata.org.
  13. [14] . Gaia Data Release 2. wikidata.org.
  14. [15] . The HARPS search for southern extra-solar planets. XXXII. New multi-planet systems in the HARPS volume limited sample: a super-Earth and a Neptune in the habitable zone. wikidata.org.
  15. [16] . The HARPS search for southern extra-solar planets. XXXII. New multi-planet systems in the HARPS volume limited sample: a super-Earth and a Neptune in the habitable zone. wikidata.org.
  16. [17] . Gaia Data Release 2. wikidata.org.
  17. [18] . Gaia Data Release 2. wikidata.org.
  18. [19] . SIMBAD. wikidata.org.
  19. [20] . Gaia Data Release 2. wikidata.org.
  20. [21] . Gaia Data Release 2. wikidata.org.
  21. [22] . The HARPS search for southern extra-solar planets. XXXII. New multi-planet systems in the HARPS volume limited sample: a super-Earth and a Neptune in the habitable zone. wikidata.org.

Class ancestry

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

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APA 4ort.xyz Knowledge Graph. (2026). Gliese 221 c. Retrieved May 3, 2026, from https://4ort.xyz/entity/gliese-221-c
MLA “Gliese 221 c.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/gliese-221-c.
BibTeX @misc{4ortxyz_gliese-221-c_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Gliese 221 c}}, year = {2026}, url = {https://4ort.xyz/entity/gliese-221-c}, note = {Accessed: 2026-05-03}}
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Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 10w ago · J. N. Squire · 2026-07-03 view diff on Wikidata ↗
    Imported from
    Time of periapsis {'unit': 'http://www.wikidata.org/entity/Q14267', 'amount':
    Semi-major axis of an orbit {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '
    M sin i {'unit': 'http://www.wikidata.org/entity/Q651336', 'amount':
    + 22 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-create:2||1 */ [[Property:P2583]]: 20±1 parsec"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.