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Gliese 229 Ab

exoplanet in the constellation Lepus
Place exoplanet Q22086877

Facts

20 properties
Instance of
exoplanet
Argument of periapsis
246.871 degree[15]
Catalog code
GJ 229 b, HD 42581b[4][5]
Constellation
Lepus[2]
Declination
-21.86462722810694 degree[17]
Declination component of proper motion
-719.088 milliarcsecond per year[19]
Discovery method
Doppler spectroscopy[7]
Epoch
J2000.0[18]
Imported from
wholeness_audit_2026-05-02
M sin i
0.047 Jupiter mass[9]
Mass
0.03153 Jupiter mass[10]
Orbital eccentricity
0.404[8]
Orbital period
579.47495 day[12]
Parallax
173.6955 milliarcsecond[13]
Parent astronomical body
Gliese 229 A[3]
Right ascension
92.64423021257124 degree[16]
Right ascension component of proper motion
-135.985 milliarcsecond per year[20]
Semi-major axis of an orbit
1.086 astronomical unit[14]
Temperature
1,200.0 kelvin[11]
Time of discovery or invention
June 2014[6]
🏷️ Also known as
en GJ 229 Ab en Gliese 229 Ab en HD 42581 Ab nl GJ 229 A b
🔖 Identifiers · 4
Image (Wikimedia Commons)
Wide Field Infrared Images of Gliese 229 b.jpg ↗
Extrasolar Planets Encyclopaedia exoplanet ID
gj_229_c--1533
NASA Exoplanet Archive ID
GJ 229 b
SIMBAD ID
HD 42581b

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Summary

Gliese 229 Ab is an exoplanet[1].

References

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

Direct Wikidata claims

  1. [2] ↑ . wikidata.org.
  2. [3] ↑ . SIMBAD. wikidata.org.
  3. [4] ↑ . SIMBAD. wikidata.org.
  4. [5] ↑ . SIMBAD. wikidata.org.
  5. [6] ↑ . Bayesian search for low-mass planets around nearby M dwarfs – estimates for occurrence rate based on global detectability statistics. wikidata.org.
  6. [7] ↑ . Bayesian search for low-mass planets around nearby M dwarfs – estimates for occurrence rate based on global detectability statistics. wikidata.org.
  7. [8] ↑ . 3-D selection of 167 sub-stellar companions to nearby stars. wikidata.org.
  8. [9] ↑ . 3-D selection of 167 sub-stellar companions to nearby stars. wikidata.org.
  9. [10] ↑ . Extrasolar Planets Encyclopaedia. wikidata.org.
  10. [11] ↑ . Extrasolar Planets Encyclopaedia. wikidata.org.
  11. [12] ↑ . 3-D selection of 167 sub-stellar companions to nearby stars. wikidata.org.
  12. [13] ↑ . Gaia Data Release 2. wikidata.org.
  13. [14] ↑ . 3-D selection of 167 sub-stellar companions to nearby stars. wikidata.org.
  14. [15] ↑ . 3-D selection of 167 sub-stellar companions to nearby stars. wikidata.org.
  15. [16] ↑ . Gaia Data Release 2. wikidata.org.
  16. [17] ↑ . Gaia Data Release 2. wikidata.org.
  17. [18] ↑ . SIMBAD. wikidata.org.
  18. [19] ↑ . Gaia Data Release 2. wikidata.org.
  19. [20] ↑ . Gaia Data Release 2. wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

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APA 4ort.xyz Knowledge Graph. (2026). Gliese 229 Ab. Retrieved November 1, 2026, from https://4ort.xyz/entity/gliese-229-ab
MLA “Gliese 229 Ab.” 4ort.xyz Knowledge Graph, 4ort.xyz, 1 Nov. 2026, https://4ort.xyz/entity/gliese-229-ab.
BibTeX @misc{4ortxyz_gliese-229-ab_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Gliese 229 Ab}}, year = {2026}, url = {https://4ort.xyz/entity/gliese-229-ab}, note = {Accessed: 2026-11-01}}
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