23 Librae b

23 Librae b
Exoplanet List of exoplanets
Parent star
Star 23 Librae
Constellation Libra
Right ascension (α) 15h 13m 28s
Declination (δ) –25° 18 33
Apparent magnitude (mV) 6.45
Distance83.7 ly
(25.6 pc)
Mass (m) 1.05 M
Radius (r) 1.2 R
Temperature (T) 5559 K
Metallicity [Fe/H] 0.23
Age 7.32 Gyr
Orbital elements
Semi-major axis(a) 0.81 ± 0.02 AU
(120 Gm)
Periastron (q) 0.62 AU
(92 Gm)
Apastron (Q) 0.99 AU
(149 Gm)
Eccentricity (e) 0.233 ± 0.002
Orbital period(P) 258.19 ± 0.07 d
(0.7069 y)
Argument of
periastron
(ω) 358.3 ± 3.7°
Time of periastron (T0) 2,450,331.7 ± 2.2 JD
Semi-amplitude (K) 49.52 ± 0.57 m/s
Physical characteristics
Minimum mass(m sin i)1.59 ± 0.02 MJ
Discovery information
Discovery date November 14, 1999
Discoverer(s) Vogt et al.
Discovery method Radial velocity
Discovery site Keck Observatory
Discovery status Published
Other designations
HD 134987 b
Database references
Extrasolar Planets
Encyclopaedia
data
SIMBADdata
Exoplanet Archivedata
Open Exoplanet Cataloguedata

23 Librae b (23 Lib b) is an extrasolar Jovian planet discovered in 1999 orbiting the star 23 Librae. It orbits in its star's habitable zone.[1][2]

As of 1999, the planet was known to have at least 1.5 times Jupiter's mass. The planet orbits 23 Librae at an average distance of 0.82 AUs, which is between that of Venus and the Earth in the Solar System.[3]

References

  1. Vogt, Steven S.; et al. (2000). "Six New Planets from the Keck Precision Velocity Survey". The Astrophysical Journal 536 (2): 902–914. arXiv:astro-ph/9911506. Bibcode:2000ApJ...536..902V. doi:10.1086/308981.
  2. Butler, R. P.; et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal 646 (1): 505–522. arXiv:astro-ph/0607493. Bibcode:2006ApJ...646..505B. doi:10.1086/504701.
  3. Jones, Hugh R. A.; et al. (2010). "A long-period planet orbiting a nearby Sun-like star". Monthly Notices of the Royal Astronomical Society 403 (4): 1703–1713. arXiv:0912.2716. Bibcode:2010MNRAS.403.1703J. doi:10.1111/j.1365-2966.2009.16232.x.

Coordinates: 15h 13m 28s, −25° 18′ 33″

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