K2-18 b

exoplanet
Place exoplanet Q22905924
Press Enter · cited answer in seconds

K2-18 b is an exoplanet[1][2][3][4][5][6][7][8].

K2-18 b

Summary

K2-18 b is an exoplanet[1]. It ranks in the top 0.52% of exoplanet entities by monthly Wikipedia readership (1,250 views/month, #3 of 578).[2]

Key Facts

  • K2-18 b is credited with the discovery of Kepler Space Telescope[3].
  • K2-18 b's video is recorded as K2-18 Star System Video.webm[4].
  • K2-18 b's image is recorded as Esa-hubble-k2-18a impression.jpg[5].
  • K2-18 b's instance of is recorded as exoplanet[6].
  • K2-18 b's instance of is recorded as sub-Neptune[7].
  • K2-18 b's constellation is recorded as Leo[8].
  • K2-18 b's Commons category is recorded as K2-18 b[9].
  • K2-18 b's parent astronomical body is recorded as K2-18[10].
  • K2-18 b's catalog code is recorded as TOI-5555.01[11].
  • K2-18 b's catalog code is recorded as K2-18b[12].
  • K2-18 b's catalog code is recorded as EPIC 201912552b[13].
  • K2-18 b's catalog code is recorded as EPIC 201912552.01[14].
  • K2-18 b's catalog code is recorded as TIC 388804061b[15].
  • K2-18 b's time of discovery or invention is recorded as +2015-08-00T00:00:00Z[16].
  • K2-18 b's discovery method is recorded as transit method[17].
  • K2-18 b's orbital eccentricity is recorded as {'amount': '+0.2'}[18].
  • K2-18 b's orbital inclination is recorded as {'unit': 'Q28390', 'amount': '+89.5785'}[19].
  • K2-18 b's mass is recorded as {'unit': 'Q681996', 'amount': '+8.63'}[20].
  • K2-18 b's radius is recorded as {'unit': 'Q1155470', 'amount': '+2.61'}[21].
  • K2-18 b's orbital period is recorded as {'unit': 'Q573', 'amount': '+32.940045'}[22].
  • K2-18 b's parallax is recorded as {'unit': 'Q21500224', 'amount': '+26.2686'}[23].
  • K2-18 b's semi-major axis of an orbit is recorded as {'unit': 'Q1811', 'amount': '+0.1591'}[24].
  • K2-18 b's argument of periapsis is recorded as {'unit': 'Q28390', 'amount': '-5.7'}[25].
  • K2-18 b's distance from Earth is recorded as {'unit': 'Q531', 'amount': '+120'}[26].
  • K2-18 b's distance from Earth is recorded as {'unit': 'Q531', 'amount': '+124'}[27].

Body

Designation and Status

Recorded instance of include exoplanet[6] and sub-Neptune[7].

History and Context

Catalog codes include TOI-5555.01[11], K2-18b[12], EPIC 201912552b[13], EPIC 201912552.01[14], and TIC 388804061b[15].

Why It Matters

K2-18 b ranks in the top 0.52% of exoplanet entities by monthly Wikipedia readership (1,250 views/month, #3 of 578).[2] It has Wikipedia articles in 27 language editions, a strong signal of global cultural recognition.[28] It is known by 13 alternative names across languages and contexts.[29]

References

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

Direct Wikidata claims

  1. [4] . wikidata.org.
  2. [5] . wikidata.org.
  3. [6] . SIMBAD. wikidata.org.
  4. [7] . The Geochemical Potential for Metabolic Processes on the Sub-Neptune Exoplanet K2-18b. wikidata.org.
  5. [8] . wikidata.org.
  6. [3] . wikidata.org.
  7. [9] . wikidata.org.
  8. [10] . 197 candidates and 104 validated planets in K2's first five fields. wikidata.org.
  9. [11] . Exoplanet Archive. wikidata.org.
  10. [12] . Exoplanet Archive. wikidata.org.
  11. [13] . Exoplanet Archive. wikidata.org.
  12. [14] . Exoplanet Archive. wikidata.org.
  13. [15] . Exoplanet Archive. wikidata.org.
  14. [16] . Stellar and Planetary Properties of K2 Campaign 1 Candidates and Validation of 17 Planets, Including a Planet Receiving Earth-like Insolation. wikidata.org.
  15. [17] . Stellar and Planetary Properties of K2 Campaign 1 Candidates and Validation of 17 Planets, Including a Planet Receiving Earth-like Insolation. wikidata.org.
  16. [18] . Tidal evolution of exoplanetary systems hosting potentially habitable exoplanets. The cases of LHS-1140 b-c and K2-18 b-c. wikidata.org.
  17. [19] . Spitzer observations confirm and rescue the habitable-zone super-Earth K2-18b for future characterization. wikidata.org.
  18. [20] . Water Vapor and Clouds on the Habitable-zone Sub-Neptune Exoplanet K2-18b. wikidata.org.
  19. [21] . Water Vapor and Clouds on the Habitable-zone Sub-Neptune Exoplanet K2-18b. wikidata.org.
  20. [22] . Water Vapor and Clouds on the Habitable-zone Sub-Neptune Exoplanet K2-18b. wikidata.org.
  21. [23] . Gaia Data Release 2. wikidata.org.
  22. [24] . Water Vapor and Clouds on the Habitable-zone Sub-Neptune Exoplanet K2-18b. wikidata.org.
  23. [25] . The CARMENES Search for Exoplanets around M Dwarfs: A Low-mass Planet in the Temperate Zone of the Nearby K2-18. wikidata.org.
  24. [26] . theguardian.com. Retrieved . theguardian.com. Provenance: wikidata.org.
  25. [27] . hycean.group.cam.ac.uk. hycean.group.cam.ac.uk. Provenance: 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). K2-18 b. Retrieved May 3, 2026, from https://4ort.xyz/entity/k2-18-b
MLA “K2-18 b.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/k2-18-b.
BibTeX @misc{4ortxyz_k2-18-b_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{K2-18 b}}, year = {2026}, url = {https://4ort.xyz/entity/k2-18-b}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): K2-18 b — https://4ort.xyz/entity/k2-18-b (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/k2-18-b · Last refreshed: