HD 86226 b
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| Discovery | |
|---|---|
| Discovered by | Arriagada et al. |
| Discovery site | Las Campanas Observatory |
| Discovery date | January 26, 2010 |
| Doppler spectroscopy | |
| Orbital characteristics | |
| 2.73 ± 0.06 AU (408,400,000 ± 9,000,000 km) | |
| Eccentricity | 0.059+0.062 −0.039 |
| 1628+22 −21 d | |
| 2454821 ± 288 | |
| Star | HD 86226 |
HD 86226 b is a gas giant exoplanet discovered by the Magellan Planet Search Program in 2010.[1] It was confirmed in data collected by the CORALIE spectrograph on the Swiss 1.2-metre Leonhard Euler Telescope in 2012.[2] It takes about 4.6 years to orbit its G-type star and was initially believed to have a minimal mass of 0.92 Jupiters.[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
References
- ^ Arriagada, P.; et al. (2010). "Five Long-period Extrasolar Planets in Eccentric orbits from the Magellan Planet Search Program". The Astrophysical Journal . 711 (2): 1229. arXiv:1001.4093 . Bibcode:2010ApJ...711.1229A. doi:10.1088/0004-637X/711/2/1229. S2CID 118682009.
- ^ Marmier, M.; et al. (2013). "The CORALIE survey for southern extrasolar planets XVII. New and updated long period and massive planets". Astronomy & Astrophysics . 551: A90. arXiv:1211.6444 . Bibcode:2013A&A...551A..90M. doi:10.1051/0004-6361/201219639. S2CID 59467665.
- ^ "Exoplanet-catalog". Exoplanet Exploration: Planets Beyond our Solar System. Retrieved 2020年01月10日.
- ^ 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:2007.13927 , Bibcode:2020AJ....160...96T, doi:10.3847/1538-3881/ab9f95 , S2CID 220830943