# HD 74156 c

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Gas giant

HD 74156 c Discovery Discovered by Dominique Naef, Michel Mayor et al.[1] Discovery site California Discovery date Apr 4, 2001[2] Detection method Radial velocity Orbital characteristics[3] 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[3] Mass 8.665+1.385 −0.470 MJ

**HD 74156 c** is an [extrasolar planet](/source/Extrasolar_planet) with a [minimum mass](/source/Minimum_mass) about eight times that of [Jupiter](/source/Jupiter) orbiting the star [HD 74156](/source/HD_74156). It is most likely a [gas giant](/source/Gas_giant). This planet was discovered by [Dominique Naef](https://fr.wikipedia.org/wiki/Dominique_Naef) and [Michel Mayor](/source/Michel_Mayor) in April 2001 together with the planet [HD 74156 b](/source/HD_74156_b).[2][1] In 2022, the inclination and true mass of HD 74156 c were measured via [astrometry](/source/Astrometry).[3]

## References

1. ^ [***a***](#cite_ref-Naef2004_1-0) [***b***](#cite_ref-Naef2004_1-1) 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"](http://www.aanda.org/index.php?option=article&access=standard&Itemid=129&url=/articles/aa/pdf/2004/04/aa0091.pdf) (PDF). *[Astronomy and Astrophysics](/source/Astronomy_and_Astrophysics)*. **414** (1): 351–359. [arXiv](/source/ArXiv_(identifier)):[astro-ph/0310261](https://arxiv.org/abs/astro-ph/0310261). [Bibcode](/source/Bibcode_(identifier)):[2004A&A...414..351N](https://ui.adsabs.harvard.edu/abs/2004A&A...414..351N). [doi](/source/Doi_(identifier)):[10.1051/0004-6361:20034091](https://doi.org/10.1051%2F0004-6361%3A20034091). [S2CID](/source/S2CID_(identifier)) [16603563](https://api.semanticscholar.org/CorpusID:16603563).

1. ^ [***a***](#cite_ref-eso0114_2-0) [***b***](#cite_ref-eso0114_2-1) ["Exoplanets: The Hunt Continues!"](http://www.eso.org/public/news/eso0114/) (Press release). Garching, Germany: European Southern Observatory. April 4, 2001. Retrieved December 27, 2012.

1. ^ [***a***](#cite_ref-Feng2022_3-0) [***b***](#cite_ref-Feng2022_3-1) [***c***](#cite_ref-Feng2022_3-2) Feng, Fabo; Butler, R. Paul; et al. (August 2022). ["3D Selection of 167 Substellar Companions to Nearby Stars"](https://doi.org/10.3847%2F1538-4365%2Fac7e57). *[The Astrophysical Journal Supplement Series](/source/The_Astrophysical_Journal_Supplement_Series)*. **262** (21): 21. [arXiv](/source/ArXiv_(identifier)):[2208.12720](https://arxiv.org/abs/2208.12720). [Bibcode](/source/Bibcode_(identifier)):[2022ApJS..262...21F](https://ui.adsabs.harvard.edu/abs/2022ApJS..262...21F). [doi](/source/Doi_(identifier)):[10.3847/1538-4365/ac7e57](https://doi.org/10.3847%2F1538-4365%2Fac7e57). [S2CID](/source/S2CID_(identifier)) [251864022](https://api.semanticscholar.org/CorpusID:251864022).

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