HD 154857 b

Planetbox begin
name = HD 154857 bPlanetbox star
star = HD 154857
constell = Ara
RA = RA|17|11|15.7219
DEC = DEC|–56|40|50.865
dist_ly = 223.55
dist_pc = 68.54
class = G5V Planetbox orbit
semimajor = 1.2±0.2
semimajor_gigameter = 180
periastron = 0.64
periastron_gigameter = 100
apastron = 1.8
apastron_gigameter = 270
eccentricity = 0.47±0.02
period = 409±1
period_year = 1.12
period_megasecond = 35.3
long_peri = 59±4
t_peri = 2450346±5
semi-amp = 50.4±1Planetbox character
mass = >1.8±0.4
mass_earth =>570±100 Planetbox discovery
discovery_date = 2004
discoverers = McCarthy et al.
AAT
flag|Australia
discovery_site = [http://www.phys.unsw.edu.au/~cgt/planet/AAPS_Home.html AAPS]
discovery_method = Radial velocity
discovery_status = PublishedPlanetbox reference
star=HD+154857
planet=b

HD 154857 b is an extrasolar planet approximately 224 light years away in the constellation of Ara. This is a gas giant mass that orbits the star in an eccentric orbit. This planet was detected by using Anglo-Australian Telescope (AAT) UCLE spectrometer.

External links

*
*
* [http://media4.obspm.fr/exoplanets/base/planete.php?etoile=HD+154857&planete=b Simulation HD 154857 b]
* [http://news.bbc.co.uk/1/hi/sci/tech/1065910.stm news.bbc.co.uk]