23 Librae b

Planetbox begin
name=23 Librae bPlanetbox star
star = 23 Librae
constell = Libra
ra = RA|15|13|28
dec = DEC|–25|18|33
dist_ly = 81
dist_pc = 25
spectral = G5VPlanetbox orbit
semimajor=0.820±0.047
eccentricity=0.243±0.011
period=258.31±0.16
ang_dist=31
long_peri=358.3±3.7
t_peri=2,450,331.7±2.2
semi-amp=49.52±.57Planetbox character
mass=>1.62±0.13Planetbox discovery
discovery_date=1999
discovery_method=Radial velocity
discoverers=Vogt et al.
discovery_status=PublishedPlanetbox catalog
names = HD 134987 b

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, with temperatures similar to Venus.

As of 2000, the planet was known to have at least 1.6 times, and may have as much as 34 times, Jupiter's mass, suggesting it may be an extremely dim brown dwarf star. The planet orbits 23 Librae at an average distance of 0.81 AUs, which is between that of Venus and the Earth in the Solar System.

References

*cite journal | url=http://www.journals.uchicago.edu/doi/full/10.1086/308981 | author=Vogt "et al." | title=Six New Planets from the Keck Precision Velocity Survey | journal=The Astrophysical Journal | year=2000 | volume=536 | issue=2 | pages=902 – 914 | doi=10.1086/308981
*cite journal | url=http://www.journals.uchicago.edu/doi/abs/10.1086/504701 | author=Butler "et al." | title=Catalog of Nearby Exoplanets | journal=The Astrophysical Journal | volume=646 | issue=1 | pages=505 – 522 | year=2006 | doi=10.1086/504701 ( [http://xxx.lanl.gov/abs/astro-ph?papernum=0607493 web Preprint] )

External links

* [http://www.extrasolar.net/planettour.asp?StarCatId=normal&PlanetId=109 23 Librae b] (Extrasolar Visions)
* [http://exoplanet.eu/planet.php?p1=HD+134987&p2=b Planet: HD 134987 b] (Extrasolar Planets Encyclopaedia)