HD 142022 Ab
Discovery | |
---|---|
Discovered by | Eggenberger et al. |
Discovery site | La Silla Observatory |
Discovery date | 14 February 2005 |
Radial Velocity (CORALIE) | |
Orbital characteristics | |
Apastron | 4.48 AU (670,000,000 km) |
Periastron | 1.38 AU (206,000,000 km) |
2.93 AU (438,000,000 km) | |
Eccentricity | 0.53 ± 0.20 |
1928 ± 46 d 5.278 y | |
Average orbital speed | 16.6 |
2,450,971 ± 75 | |
170 ± 9 | |
Semi-amplitude | 92 ± 65 |
Star | HD 142022 A |
HD 142022 Ab is an exoplanet discovered by the radial velocity method by Eggenberger et al. in 2005 after finding 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, 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%.
See also[]
- HD 141937 b
- HD 142415 b
References[]
- Eggenberger; Mayor, M.; Naef, D.; Pepe, F.; Queloz, D.; Santos, N. C.; Udry, S.; Lovis, C. (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 (3): 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". Exoplanets. Archived from the original on 2012-03-04. Retrieved 2008-11-01.
Coordinates: 16h 10m 15.0238s, −84° 13′ 53.802″
Categories:
- Exoplanets discovered in 2005
- Giant planets
- Octans
- Exoplanets detected by radial velocity
- Exoplanet stubs