HD 86226 b
Description: HD 86226 b is a gas giant exoplanet discovered by the Magellan Planet Search Program in 2010. It was confirmed in data collected by the CORALIE spectrograph on the Swiss 1.2-metre Leonhard Euler Telescope in 2012. 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. 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.
Physical Properties
Mass (Jupiter mass): 0.45 MJ
Radius (Jupiter radius): 1.28 RJ
Density: 0.269 g/cm³
Equilibrium Temperature: 176.0 K
Orbital Parameters
Orbital Period: 1628.0 days
Semi-major Axis: 2.73 AU
Eccentricity: 0.059
Inclination: Unknown
Host Star Properties
Host Star: HD 86226
Spectral Type: G1 V
Temperature: 5863.0 K
Stellar Mass: 1.02 M☉
Stellar Radius: 1.05 R☉
Discovery Information
Planet Letter: b
Object ID: 3.11355
Host ID: 2.56041
Discovery Date: 2010-03
Discovery Year: 2009
Discovery Method: Radial Velocity
Discovery Locale: Ground
Discovery Facility: Las Campanas Observatory
Discovery Instrument: MIKE Spectrograph