HD 86226 b

HD 86226 b
Discovery
Discovered byArriagada et al.
Discovery siteLas Campanas Observatory
Discovery dateJanuary 26, 2010
Doppler spectroscopy
Orbital characteristics
2.73 ± 0.06 AU (408,400,000 ± 9,000,000 km)
Eccentricity0.059+0.062
−0.039
1628+22
−21 d
2454821 ± 288
StarHD 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]

  1. ^ 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.
  2. ^ 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.
  3. ^ "Exoplanet-catalog". Exoplanet Exploration: Planets Beyond our Solar System. Retrieved 2020-01-10.
  4. ^ 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