HD 108147 b
Description: HD 108147 b, also named Tumearandu, is a gas giant exoplanet with a minimum mass about half that of Jupiter. It orbits the star in a very tight "torch orbit". The distance between the planet and the star is only a tenth of the distance between Earth and the Sun (0.1AU). A number of such worlds are known to exist, but the eccentricity of this planet is unusually high. Planets orbiting very close to their parent stars usually have round orbits because of the tidal forces between the bodies.
Physical Properties
Mass (Jupiter mass): Unknown
Radius (Jupiter radius): 0.973 RJ
Density: 0.352 g/cm³
Equilibrium Temperature: 890.0 K
Orbital Parameters
Orbital Period: 10.8985 days
Semi-major Axis: 0.102 AU
Eccentricity: 0.53
Inclination: Unknown
Host Star Properties
Host Star: HD 108147
Spectral Type: F8 V CH+0.4
Temperature: 6255.73 K
Stellar Mass: 1.22 M☉
Stellar Radius: 1.21 R☉
Discovery Information
Planet Letter: b
Object ID: 3.11052
Host ID: 2.56695
Discovery Date: 2002-06
Discovery Year: 2002
Discovery Method: Radial Velocity
Discovery Locale: Ground
Discovery Facility: La Silla Observatory
Discovery Instrument: CORALIE Spectrograph