HD 156668 b
A confirmed exoplanet orbiting HD 156668.
Compared with Earth
- Mass
- About 4.2 times Earth's mass.
- Year
- A year here lasts about 4.6 Earth days.
Planet
- Radius
- Unknown
- Mass
- 4.15 × Earth
- Density
- Unknown
- Equilibrium temperature
- Unknown
- Starlight received
- Unknown
- Orbital period
- 4.646 days
- Average distance from its star
- 0.05 AU
Star
- Host star
- HD 156668
- Spectral class
- K — orange dwarf
- Surface temperature
- 4,850 K
- Radius
- 0.72 × Sun
- Mass
- 0.772 × Sun
- Age
- 8.6 billion years
System
- Distance from Earth
- 79.36 light-years (24.33 parsecs)
- Stars in system
- 1
- Known planets
- 2
Discovery
- Year
- 2010
- Method
- Radial Velocity
- Facility
- W. M. Keck Observatory
Data from the NASA Exoplanet Archive, synced October 14, 2026.