GJ 3998 c

exoplanet in the constellation Ophiuchus
Place exoplanet Q83190542
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GJ 3998 c

Summary

GJ 3998 c is an exoplanet[1].

Key Facts

  • GJ 3998 c's instance of is recorded as exoplanet[2].
  • GJ 3998 c's constellation is recorded as Ophiuchus[3].
  • GJ 3998 c's parent astronomical body is recorded as GJ 3998[4].
  • GJ 3998 c's catalog code is recorded as BD+11 3149c[5].
  • GJ 3998 c's catalog code is recorded as GJ 3998 c[6].
  • GJ 3998 c's catalog code is recorded as TIC 459558974c[7].
  • GJ 3998 c's time of discovery or invention is recorded as +2016-10-00T00:00:00Z[8].
  • GJ 3998 c's discovery method is recorded as Doppler spectroscopy[9].
  • GJ 3998 c's orbital eccentricity is recorded as {'unit': '1', 'amount': '+0.049'}[10].
  • GJ 3998 c's M sin i is recorded as {'unit': 'http://www.wikidata.org/entity/Q681996', 'amount': '+6.26'}[11].
  • GJ 3998 c's mass is recorded as {'unit': 'http://www.wikidata.org/entity/Q651336', 'amount': '+0.0197'}[12].
  • GJ 3998 c's orbital period is recorded as {'unit': 'http://www.wikidata.org/entity/Q573', 'amount': '+13.74'}[13].
  • GJ 3998 c's parallax is recorded as {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+55.0799'}[14].
  • GJ 3998 c's semi-major axis of an orbit is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+0.089'}[15].
  • GJ 3998 c's SIMBAD ID is recorded as BD+11 3149c[16].
  • GJ 3998 c's Extrasolar Planets Encyclopaedia exoplanet ID is recorded as gj_3998_c--4001[17].
  • GJ 3998 c's NASA Exoplanet Archive ID is recorded as GJ 3998 c[18].
  • GJ 3998 c's right ascension is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+259.00265304406660'}[19].
  • GJ 3998 c's declination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+11.05767046886584'}[20].
  • GJ 3998 c's epoch is recorded as J2000.0[21].
  • GJ 3998 c's declination component of proper motion is recorded as {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-347.315'}[22].
  • GJ 3998 c's right ascension component of proper motion is recorded as {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-137.311'}[23].

Body

Designation and Status

GJ 3998 c's instance of is recorded as exoplanet[2].

History and Context

Catalog codes include BD+11 3149c[5], GJ 3998 c[6], and TIC 459558974c[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] . HADES RV program with HARPS-N at the TNG GJ 3998: An early M-dwarf hosting a system of super-Earths. wikidata.org.
  4. [5] . SIMBAD. wikidata.org.
  5. [6] . SIMBAD. wikidata.org.
  6. [7] . Exoplanet Archive. wikidata.org.
  7. [8] . HADES RV program with HARPS-N at the TNG GJ 3998: An early M-dwarf hosting a system of super-Earths. wikidata.org.
  8. [9] . HADES RV program with HARPS-N at the TNG GJ 3998: An early M-dwarf hosting a system of super-Earths. wikidata.org.
  9. [10] . HADES RV program with HARPS-N at the TNG GJ 3998: An early M-dwarf hosting a system of super-Earths. wikidata.org.
  10. [11] . HADES RV program with HARPS-N at the TNG GJ 3998: An early M-dwarf hosting a system of super-Earths. wikidata.org.
  11. [12] . Extrasolar Planets Encyclopaedia. wikidata.org.
  12. [13] . HADES RV program with HARPS-N at the TNG GJ 3998: An early M-dwarf hosting a system of super-Earths. wikidata.org.
  13. [14] . Gaia Data Release 2. wikidata.org.
  14. [15] . HADES RV program with HARPS-N at the TNG GJ 3998: An early M-dwarf hosting a system of super-Earths. wikidata.org.
  15. [16] . wikidata.org.
  16. [17] . wikidata.org.
  17. [18] . wikidata.org.
  18. [19] . Gaia Data Release 2. wikidata.org.
  19. [20] . Gaia Data Release 2. 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). GJ 3998 c. Retrieved May 3, 2026, from https://4ort.xyz/entity/gj-3998-c
MLA “GJ 3998 c.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/gj-3998-c.
BibTeX @misc{4ortxyz_gj-3998-c_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{GJ 3998 c}}, year = {2026}, url = {https://4ort.xyz/entity/gj-3998-c}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): GJ 3998 c — https://4ort.xyz/entity/gj-3998-c (retrieved 2026-05-03)

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