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23 Librae c

extrasolar planet
Exoplanet Q1042415

Facts

21 properties

Identity

Instance of
exoplanet
More facts +20
Angular distance
0.261261 arcsecond[14]
Argument of periapsis
59°[17]
Catalog code
HD 134987c, TIC 61397572c[5][6]
Constellation
Libra[3]
Declination
-25.30934852752750°[19]
Declination component of proper motion
-75.160 mas/yr[21]
Discoverer or inventor
Steven S. Vogt[2]
Discovery method
Doppler spectroscopy[9]
Epoch
J2000.0[20]
M sin i
0.935 M♃[11]
Mass
0.82 M♃[12]
Orbital eccentricity
0.154[10]
Orbital period
5,960 day[13]
Parallax
38.1678 mas[15]
Parent astronomical body
23 Librae[4]
Right ascension
228.36944628882122°[18]
Right ascension component of proper motion
-400.308 mas/yr
Semi-major axis of an orbit
6.62 au[16]
Time of discovery or invention
December 14, 2009, April 2010[7][8]
Time of periapsis
11,100 Julian day
🏷️ Also known as
en 23 Lib c en 23 Librae c en TIC 61397572c ar 23 الميزان c ar ٢٣ الميزان c es 23 Lib c fr 23 Lib c fr HD 134987 c ko 천칭자리 23 c ru 23 Весов c zh 天秤座23c
🔖 Identifiers · 4
Extrasolar Planets Encyclopaedia exoplanet ID
23_lib_c--621
Freebase ID
/m/09k5ph_
NASA Exoplanet Archive ID
HD 134987 c
SIMBAD ID
* 23 Lib c

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🔗 Connections
Constellation 1
Libra
Discoverer or inventor 1
Steven S. Vogt
Discovery method 1
Doppler spectroscopy
Epoch 1
J2000.0
Instance of 1
exoplanet
Parent astronomical body 1
23 Librae
← Child astronomical body 1
23 Librae
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Summary

23 Librae c is an exoplanet[1].

References

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

Direct Wikidata claims

  1. [3] ↑ . wikidata.org.
  2. [2] ↑ . wikidata.org.
  3. [4] ↑ . SIMBAD. wikidata.org.
  4. [5] ↑ . SIMBAD. wikidata.org.
  5. [6] ↑ . Exoplanet Archive. wikidata.org.
  6. [7] ↑ . wikidata.org.
  7. [8] ↑ . A long-period planet orbiting a nearby Sun-like star. wikidata.org.
  8. [9] ↑ . A long-period planet orbiting a nearby Sun-like star. wikidata.org.
  9. [10] ↑ . The California Legacy Survey. I. A Catalog of 178 Planets from Precision Radial Velocity Monitoring of 719 Nearby Stars over Three Decades. wikidata.org.
  10. [11] ↑ . The California Legacy Survey. I. A Catalog of 178 Planets from Precision Radial Velocity Monitoring of 719 Nearby Stars over Three Decades. wikidata.org.
  11. [12] ↑ . Extrasolar Planets Encyclopaedia. wikidata.org.
  12. [13] ↑ . The California Legacy Survey. I. A Catalog of 178 Planets from Precision Radial Velocity Monitoring of 719 Nearby Stars over Three Decades. wikidata.org.
  13. [14] ↑ . Extrasolar Planets Encyclopaedia. wikidata.org.
  14. [15] ↑ . Gaia Data Release 2. wikidata.org.
  15. [16] ↑ . The California Legacy Survey. I. A Catalog of 178 Planets from Precision Radial Velocity Monitoring of 719 Nearby Stars over Three Decades. wikidata.org.
  16. [17] ↑ . The California Legacy Survey. I. A Catalog of 178 Planets from Precision Radial Velocity Monitoring of 719 Nearby Stars over Three Decades. wikidata.org.
  17. [18] ↑ . Gaia Data Release 2. wikidata.org.
  18. [19] ↑ . Gaia Data Release 2. wikidata.org.
  19. [20] ↑ . SIMBAD. wikidata.org.
  20. [21] ↑ . 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). 23 Librae c. Retrieved November 11, 2026, from https://4ort.xyz/entity/23-librae-c
MLA “23 Librae c.” 4ort.xyz Knowledge Graph, 4ort.xyz, 11 Nov. 2026, https://4ort.xyz/entity/23-librae-c.
BibTeX @misc{4ortxyz_23-librae-c_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{23 Librae c}}, year = {2026}, url = {https://4ort.xyz/entity/23-librae-c}, note = {Accessed: 2026-11-11}}
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