Kepler-9 c

extrasolar planet
Place exoplanet Q2668671
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Kepler-9 c

Summary

Kepler-9 c is an exoplanet[1]. It draws 9 Wikipedia views per month (exoplanet category, ranking #88 of 578).[2]

Key Facts

  • Kepler-9 c is credited with the discovery of Kepler Space Telescope[3].
  • Kepler-9 c's image is recorded as Exoplanet Comparison Kepler-9 c.png[4].
  • Kepler-9 c's instance of is recorded as exoplanet[5].
  • Kepler-9 c's constellation is recorded as Lyra[6].
  • Kepler-9 c's Commons category is recorded as Kepler-9 c[7].
  • Kepler-9 c's parent astronomical body is recorded as Kepler-9[8].
  • Kepler-9 c's catalog code is recorded as KOI-377.02[9].
  • Kepler-9 c's catalog code is recorded as Kepler-9c[10].
  • Kepler-9 c's catalog code is recorded as KOI-377c[11].
  • Kepler-9 c's catalog code is recorded as TIC 120571842c[12].
  • Kepler-9 c's time of discovery or invention is recorded as +2010-10-00T00:00:00Z[13].
  • Kepler-9 c's Freebase ID is recorded as /m/0cz9t6w[14].
  • Kepler-9 c's discovery method is recorded as transit method[15].
  • Kepler-9 c's orbital eccentricity is recorded as {'amount': '+0.06691'}[16].
  • Kepler-9 c's orbital inclination is recorded as {'unit': 'Q28390', 'amount': '+89.188'}[17].
  • Kepler-9 c's M sin i is recorded as {'unit': 'Q651336', 'amount': '+0.08584647021'}[18].
  • Kepler-9 c's mass is recorded as {'unit': 'Q681996', 'amount': '+29.9'}[19].
  • Kepler-9 c's radius is recorded as {'unit': 'Q1155470', 'amount': '+8.106'}[20].
  • Kepler-9 c's orbital period is recorded as {'unit': 'Q573', 'amount': '+38.90787517'}[21].
  • Kepler-9 c's parallax is recorded as {'unit': 'Q21500224', 'amount': '+1.5629'}[22].
  • Kepler-9 c's semi-major axis of an orbit is recorded as {'unit': 'Q1811', 'amount': '+0.226498247'}[23].
  • Kepler-9 c's argument of periapsis is recorded as {'unit': 'Q28390', 'amount': '+167.5'}[24].
  • Kepler-9 c's diameter is recorded as {'unit': 'Q828224', 'amount': '+113000'}[25].
  • Kepler-9 c's SIMBAD ID is recorded as Kepler-9c[26].
  • Kepler-9 c's Wolfram Language entity code is recorded as Entity["Exoplanet", "Kepler9c"][27].

Body

Designation and Status

Kepler-9 c's instance of is recorded as exoplanet[5].

History and Context

Catalog codes include KOI-377.02[9], Kepler-9c[10], KOI-377c[11], and TIC 120571842c[12].

Why It Matters

Kepler-9 c draws 9 Wikipedia views per month (exoplanet category, ranking #88 of 578).[2] It has Wikipedia articles in 11 language editions, a strong signal of global cultural recognition.[28]

References

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

Direct Wikidata claims

  1. [4] . wikidata.org.
  2. [5] . SIMBAD. wikidata.org.
  3. [6] . wikidata.org.
  4. [3] . wikidata.org.
  5. [7] . wikidata.org.
  6. [8] . Spectroscopy of faint Kepler mission exoplanet candidate host stars. wikidata.org.
  7. [9] . SIMBAD. wikidata.org.
  8. [10] . SIMBAD. wikidata.org.
  9. [11] . Exoplanet Archive. wikidata.org.
  10. [12] . Exoplanet Archive. wikidata.org.
  11. [13] . Kepler-9: a system of multiple planets transiting a Sun-like star, confirmed by timing variations. wikidata.org.
  12. [14] . Freebase Data Dumps. wikidata.org.
  13. [15] . Kepler-9: a system of multiple planets transiting a Sun-like star, confirmed by timing variations. wikidata.org.
  14. [16] . HARPS-N radial velocities confirm the low densities of the Kepler-9 planets. wikidata.org.
  15. [17] . HARPS-N radial velocities confirm the low densities of the Kepler-9 planets. wikidata.org.
  16. [18] . The Kepler Giant Planet Search. I: A Decade of Kepler Planet-host Radial Velocities from W. M. Keck Observatory. wikidata.org.
  17. [19] . HARPS-N radial velocities confirm the low densities of the Kepler-9 planets. wikidata.org.
  18. [20] . The Kepler Giant Planet Search. I: A Decade of Kepler Planet-host Radial Velocities from W. M. Keck Observatory. wikidata.org.
  19. [21] . The Kepler Giant Planet Search. I: A Decade of Kepler Planet-host Radial Velocities from W. M. Keck Observatory. wikidata.org.
  20. [22] . Gaia Data Release 2. wikidata.org.
  21. [23] . The Kepler Giant Planet Search. I: A Decade of Kepler Planet-host Radial Velocities from W. M. Keck Observatory. wikidata.org.
  22. [24] . HARPS-N radial velocities confirm the low densities of the Kepler-9 planets. wikidata.org.
  23. [25] . Spectroscopy of faint Kepler mission exoplanet candidate host stars. 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.

📑 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). Kepler-9 c. Retrieved May 3, 2026, from https://4ort.xyz/entity/kepler-9-c
MLA “Kepler-9 c.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/kepler-9-c.
BibTeX @misc{4ortxyz_kepler-9-c_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Kepler-9 c}}, year = {2026}, url = {https://4ort.xyz/entity/kepler-9-c}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Kepler-9 c — https://4ort.xyz/entity/kepler-9-c (retrieved 2026-05-03)

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