HD 142022

Starbox short
name = HD 142022
epoch = J2000.0
constell = Octans
ra = 16h 10m 15.0238s
dec = −84º 13' 53.8025″
spectral = G9V
appmag_v = 7.69
absmag_v = 4.91
dist_ly = 117
dist_pc = 35.9
names = CD−83 202, Gl 606.1, GJ 9536, HIP 79242, SAO 258738

HD 142022 is a binary star system located in the southernmost constellation Octans located at a distance of 117 ly. The primary star (HD 142022 A) has a spectral type of G9V and has apparent magnitude of 7.69. Its mass is 1% less than the Sun but the radius is only 70.5%. The star’s age is old, only 400 million years younger than the Universe itself. It is a Population I star with metallicity of 55% greater than solar.

The primary star has a single planetary system as of 2005.

HD 142022 Ab

Planetbox begin
name = HD 142022 Ab Planetbox orbit
semimajor = 2.93
eccentricity = 0.53±0.20
period = 1928±46
ang_dist = 81.6
long_peri = 170±9
t_peri = 2,450,971±75
semi-amp = 92±65Planetbox character
mass = >4.47 Planetbox discovery
discovery_date = 2005
discoverers = Eggenberger et al.
discovery_method = Radial Velocity
discovery_status=Published The radial velocity method by Eggenberger et al. 2005 found that HD 142022 A is wobbling which indicated the presence of a massive planet, designating as HD 142022 Ab, with mass of 4.5 times Jupiter. It has a relatively wide separation between a planet and a star with nearly 3 AU (angular separation of 81.6 mas as viewed from Earth), which takes 1928 days or 5.28 years to revolve. As it is typical for long-period planets, it has a relatively high eccentricity of 53±20%.

References

*

External links

*
*
*
*
*
*
*
*cite web |url=http://www.exoplanets.org/planets.shtml |title=Planet Table |work=Catalog of Nearby Exoplanet |accessdate=December 12 |accessyear=2007