| Discovery | |
|---|---|
| Discovered by | Dominique Naef, Michel Mayor et al. |
| Discovery site | California |
| Discovery date | Apr 4, 2001 |
| Detection method | Radial velocity |
| Orbital characteristics | |
| Semi-major axis | 3.678+0.145 −0.159 AU |
| Eccentricity | 0.377±0.006 |
| Orbital period (sidereal) | 2,448.5 ± 4.2 days (6.704 ± 0.011 a) |
| Inclination | 120.162°+7.601° −66.225° |
| Longitude of ascending node | 210.652°+7.606° −42.039° |
| Time of periastron | 2448568.530+13.016 −11.742 |
| Argument of periastron | 271.934°+1.178° −1.505° |
| Semi-amplitude | 113.940+0.974 −1.099 m/s |
| Star | HD 74156 |
| Physical characteristics | |
| Mass | 8.665+1.385 −0.470 MJ |
HD 74156 c is an extrasolar planet with a minimum mass about eight times that of Jupiter orbiting the star HD 74156. It is most likely a gas giant. This planet was discovered by Dominique Naef and Michel Mayor in April 2001 together with the planet HD 74156 b. In 2022, the inclination and true mass of HD 74156 c were measured via astrometry.
References
- ^ Naef, Dominique; Mayor, Michel; Beuzit, Jean-Luc; Perrier, Christian; Queloz, Didier; Sivan, Jean-Pierre; Udry, Stéphane (2004). "The ELODIE survey for northern extra-solar planets. III. Three planetary candidates detected with ELODIE" (PDF). Astronomy and Astrophysics. 414 (1): 351–359. arXiv:astro-ph/0310261. Bibcode:2004A&A...414..351N. doi:10.1051/0004-6361:20034091. S2CID 16603563.
- ^ "Exoplanets: The Hunt Continues!" (Press release). Garching, Germany: European Southern Observatory. April 4, 2001. Retrieved December 27, 2012.
- ^ Feng, Fabo; Butler, R. Paul; et al. (August 2022). "3D Selection of 167 Substellar Companions to Nearby Stars". The Astrophysical Journal Supplement Series. 262 (21): 21. arXiv:2208.12720. Bibcode:2022ApJS..262...21F. doi:10.3847/1538-4365/ac7e57. S2CID 251864022.
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