Home › Entities › Exoplanet › 23 Librae b

23 Librae b

extrasolar planet
Exoplanet Q945666

Facts

21 properties

Identity

Instance of
exoplanet
More facts +20
Angular distance
0.036486 arcsecond[14]
Argument of periapsis
-9.51°[17]
Catalog code
HD 134987b, TIC 61397572b[5][6]
Constellation
Libra[3]
Declination
-25.30934852752750°[19]
Declination component of proper motion
-75.160 mas/yr
Discoverer or inventor
Steven S. Vogt[2]
Discovery method
Doppler spectroscopy[9]
Epoch
J2000.0[20]
M sin i
1.624 M♃[11]
Mass
1.59 M♃[12]
Orbital eccentricity
0.2281[10]
Orbital period
258.251 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
0.818 au[16]
Time of discovery or invention
November 1, 1999, June 2000[7][8]
Time of periapsis
10,071 Julian day
🏷️ Also known as
en 23 Lib b en 23 Librae b en TIC 61397572b ar 23 الميزان b ar ٢٣ الميزان b es 23 Lib b fr 23 Lib b fr HD 134987 b ko 천칭자리 23 b ru 23 Весов b zh 天秤座23b
🔖 Identifiers · 5
Image (Wikimedia Commons)
Planet 23 Librae b.png ↗
Extrasolar Planets Encyclopaedia exoplanet ID
23_lib_b--56
Freebase ID
/m/02vkg77
NASA Exoplanet Archive ID
HD 134987 b
SIMBAD ID
* 23 Lib b

Report an error or request removal Lineage (PROV-JSON)

🔗 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
Press Enter · cited answer in seconds

Summary

23 Librae b 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] ↑ . Six New Planets from the Keck Precision Velocity Survey. wikidata.org.
  8. [9] ↑ . Six New Planets from the Keck Precision Velocity Survey. 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.

Class ancestry

  1. [1] ↑ . Wikidata. 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). 23 Librae b. Retrieved November 14, 2026, from https://4ort.xyz/entity/23-librae-b
MLA “23 Librae b.” 4ort.xyz Knowledge Graph, 4ort.xyz, 14 Nov. 2026, https://4ort.xyz/entity/23-librae-b.
BibTeX @misc{4ortxyz_23-librae-b_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{23 Librae b}}, year = {2026}, url = {https://4ort.xyz/entity/23-librae-b}, note = {Accessed: 2026-11-14}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): 23 Librae b — https://4ort.xyz/entity/23-librae-b (retrieved 2026-11-14)

Canonical URL: https://4ort.xyz/entity/23-librae-b · Last refreshed: