HD 177830 b
A confirmed exoplanet orbiting HD 177830.
Compared with Earth
- Mass
- About 537 times Earth's mass.
- Year
- A year here lasts about 1.1 Earth years.
Planet
- Radius
- Unknown
- Mass
- 537.1 × Earth
- Density
- Unknown
- Equilibrium temperature
- Unknown
- Starlight received
- Unknown
- Orbital period
- 410.1 days
- Average distance from its star
- 1.14 AU
Star
- Host star
- HD 177830
- Spectral class
- K — orange dwarf
- Surface temperature
- 4,901 K
- Radius
- 3.26 × Sun
- Mass
- 1.7 × Sun
- Age
- Unknown
System
- Distance from Earth
- 204.7 light-years (62.77 parsecs)
- Stars in system
- 2
- Known planets
- 2
Discovery
- Year
- 1999
- Method
- Radial Velocity
- Facility
- W. M. Keck Observatory
Data from the NASA Exoplanet Archive, synced October 14, 2026.