# HD 86226 b

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Gas giant

HD 86226 b Discovery Discovered by Arriagada et al. Discovery site Las Campanas Observatory Discovery date January 26, 2010 Detection method Doppler spectroscopy Orbital characteristics Semi-major axis 2.73 ± 0.06 AU (408,400,000 ± 9,000,000 km) Eccentricity 0.059+0.062 −0.039 Orbital period (sidereal) 1628+22 −21 d Time of periastron 2454821 ± 288 Star HD 86226

**HD 86226 b** is a [gas giant](/source/Gas_giant) [exoplanet](/source/Exoplanet) discovered by the [Magellan Planet Search Program](/source/Magellan_Planet_Search_Program) in 2010.[1] It was confirmed in data collected by the CORALIE [spectrograph](/source/Spectrograph) on the [Swiss 1.2-metre Leonhard Euler Telescope](/source/Swiss_1.2-metre_Leonhard_Euler_Telescope) in 2012.[2] It takes about 4.6 years to orbit its [G-type star](/source/G-type_main-sequence_star) and was initially believed to have a minimal mass of 0.92 [Jupiters](/source/Jupiter).[3] Discovery of the second planet in the system has led to the revised mass of HD 86226 b in 2020, now estimated to be 0.45+0.04 −0.05MJ.[4]

## See also

- [List of exoplanets discovered in 2010](/source/List_of_exoplanets_discovered_in_2010)

## References

1. **[^](#cite_ref-MAGELLAN_1-0)** Arriagada, P.; et al. (2010). "Five Long-period Extrasolar Planets in Eccentric orbits from the Magellan Planet Search Program". *[The Astrophysical Journal](/source/The_Astrophysical_Journal)*. **711** (2): 1229. [arXiv](/source/ArXiv_(identifier)):[1001.4093](https://arxiv.org/abs/1001.4093). [Bibcode](/source/Bibcode_(identifier)):[2010ApJ...711.1229A](https://ui.adsabs.harvard.edu/abs/2010ApJ...711.1229A). [doi](/source/Doi_(identifier)):[10.1088/0004-637X/711/2/1229](https://doi.org/10.1088%2F0004-637X%2F711%2F2%2F1229). [S2CID](/source/S2CID_(identifier)) [118682009](https://api.semanticscholar.org/CorpusID:118682009).

1. **[^](#cite_ref-coralie_2-0)** Marmier, M.; et al. (2013). "The CORALIE survey for southern extrasolar planets XVII. New and updated long period and massive planets". *[Astronomy & Astrophysics](/source/Astronomy_%26_Astrophysics)*. **551**: A90. [arXiv](/source/ArXiv_(identifier)):[1211.6444](https://arxiv.org/abs/1211.6444). [Bibcode](/source/Bibcode_(identifier)):[2013A&A...551A..90M](https://ui.adsabs.harvard.edu/abs/2013A&A...551A..90M). [doi](/source/Doi_(identifier)):[10.1051/0004-6361/201219639](https://doi.org/10.1051%2F0004-6361%2F201219639). [S2CID](/source/S2CID_(identifier)) [59467665](https://api.semanticscholar.org/CorpusID:59467665).

1. **[^](#cite_ref-3)** ["Exoplanet-catalog"](https://exoplanets.nasa.gov/exoplanet-catalog/6692/hd-86226-b/). *Exoplanet Exploration: Planets Beyond our Solar System*. Retrieved 2020-01-10.

1. **[^](#cite_ref-Teske2020_4-0)** Teske, Johanna; et al. (2020), "TESS Reveals a Short-period Sub-Neptune Sibling (HD 86226c) to a Known Long-period Giant Planet", *The Astronomical Journal*, **160** (2): 96, [arXiv](/source/ArXiv_(identifier)):[2007.13927](https://arxiv.org/abs/2007.13927), [Bibcode](/source/Bibcode_(identifier)):[2020AJ....160...96T](https://ui.adsabs.harvard.edu/abs/2020AJ....160...96T), [doi](/source/Doi_(identifier)):[10.3847/1538-3881/ab9f95](https://doi.org/10.3847%2F1538-3881%2Fab9f95), [S2CID](/source/S2CID_(identifier)) [220830943](https://api.semanticscholar.org/CorpusID:220830943)

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