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 | |
| Database references | |
| SIMBAD | data |
| ARICNS | 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.
| 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
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". Astronomy and Astrophysics. 447: 1159–1163. arXiv:astro-ph/0510561. Bibcode:2006A&A...447.1159E. doi:10.1051/0004-6361:20053720. Retrieved December 12, 2007.
External links
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