HD 81688 b
A confirmed exoplanet orbiting HD 81688.
Compared with Earth
- Mass
- About 526 times Earth's mass.
- Year
- A year here lasts about 184 Earth days.
Planet
- Radius
- Unknown
- Mass
- 525.7 × Earth
- Density
- Unknown
- Equilibrium temperature
- Unknown
- Starlight received
- Unknown
- Orbital period
- 183.9 days
- Average distance from its star
- 0.648 AU
Star
- Host star
- HD 81688
- Spectral class
- K — orange dwarf
- Surface temperature
- 4,797 K
- Radius
- 11.13 × Sun
- Mass
- 1.07 × Sun
- Age
- Unknown
System
- Distance from Earth
- 279.6 light-years (85.72 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2007
- Method
- Radial Velocity
- Facility
- Okayama Astrophysical Observatory
Data from the NASA Exoplanet Archive, synced October 14, 2026.