HD 69830 c
Description: HD 69830 c is an exoplanet orbiting HD 69830. It is the second-closest planet in its system and has a minimum mass 12 times that of Earth. Based on theoretical modeling in the 2006 discovery paper, it is likely to be a rocky planet, not a gas giant. However, other work has found that if it had formed as a gas giant, it would have stayed that way, and it is now understood that planets this massive are rarely rocky.
Physical Properties
Mass (Jupiter mass): Unknown
Radius (Jupiter radius): 0.309 RJ
Density: 1.57 g/cm³
Equilibrium Temperature: Unknown
Orbital Parameters
Orbital Period: 31.56 days
Semi-major Axis: 0.186 AU
Eccentricity: 0.13
Inclination: Unknown
Host Star Properties
Host Star: HD 69830
Spectral Type: K0V
Temperature: 5385.0 K
Stellar Mass: 0.86 M☉
Stellar Radius: 0.89 R☉
Discovery Information
Planet Letter: c
Object ID: 3.11325
Host ID: 2.55603
Discovery Date: 2006-05
Discovery Year: 2006
Discovery Method: Radial Velocity
Discovery Locale: Ground
Discovery Facility: La Silla Observatory
Discovery Instrument: HARPS Spectrograph