HD 219139 b
A confirmed exoplanet orbiting HD 219139.
Compared with Earth
- Mass
- About 248 times Earth's mass.
- Year
- A year here lasts about 276 Earth days.
Planet
- Radius
- Unknown
- Mass
- 247.9 × Earth
- Density
- Unknown
- Equilibrium temperature
- Unknown
- Starlight received
- Unknown
- Orbital period
- 275.5 days
- Average distance from its star
- 0.94 AU
Star
- Host star
- HD 219139
- Spectral class
- K — orange dwarf
- Surface temperature
- 4,831 K
- Radius
- 11.22 × Sun
- Mass
- 1.46 × Sun
- Age
- Unknown
System
- Distance from Earth
- 342.3 light-years (104.9 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2021
- Method
- Radial Velocity
- Facility
- Okayama Astrophysical Observatory
Data from the NASA Exoplanet Archive, synced October 14, 2026.