HD 142022 Ab

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%.

HD 142022 Ab
Discovery
Discovered byEggenberger et al.
Discovery siteLa Silla Observatory
Discovery date14 February 2005
Radial Velocity
(CORALIE)
Orbital characteristics
Apastron4.48 AU (670,000,000 km)
Periastron1.38 AU (206,000,000 km)
2.93 AU (438,000,000 km)
Eccentricity0.53 ± 0.20
1928 ± 46 d
5.278 y
16.6
2,450,971 ± 75
170 ± 9
Semi-amplitude92 ± 65
StarHD 142022 A

    See also

    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.


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