HD 142022

HD 142022

Observation data Epoch J2000.0      Equinox J2000.0
Constellation	Octans
Right ascension	16h 10m 15.0238s
Declination	−84° 13′ 53.802″
Apparent magnitude (V)	7.69
Absolute magnitude (V)	4.91
Distance	117 ly (35.9 pc)
Spectral type	G9V
Other designations
CD−83 202, GC 21507, GCRV 65757, Gl 606.1, GJ 9536, HIP 79242, LTT 6382, SAO 258738
Database references
SIMBAD	data
ARICNS	data
Extrasolar Planets Encyclopaedia	data

HD 142022 is a binary star system located in the southernmost constellation of 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 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 known planet, discovered in 2005.

The HD 142022 system

Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination	Radius
b	>4.47 MJ	2.93	1928 ± 46	0.53 ± 0.20	—	—

See also

• HD 141937
• HD 142415
• List of extrasolar planets

References

• Eggenberger et al. (2006). "The CORALIE survey for southern extrasolar planets XIV. HD 142022 b: a long-period planetary companion in a wide binary". Astron. & Astrophys. 447: 1159–1163. arXiv:astro-ph/0510561. Bibcode:2006A&A...447.1159E. doi:10.1051/0004-6361:20053720. Retrieved December 12, 2007. 

External links

• "HD 142022 A". Extrasolar Visions.