HD 210277 b
A confirmed exoplanet orbiting HD 210277.
Compared with Earth
- Mass
- About 410 times Earth's mass.
- Year
- A year here lasts about 1.2 Earth years.
Planet
- Radius
- Unknown
- Mass
- 410 × Earth
- Density
- Unknown
- Equilibrium temperature
- Unknown
- Starlight received
- Unknown
- Orbital period
- 442.2 days
- Average distance from its star
- 1.13 AU
Star
- Host star
- HD 210277
- Spectral class
- G — sun-like
- Surface temperature
- 5,538 K
- Radius
- 1.07 × Sun
- Mass
- 1.01 × Sun
- Age
- Unknown
System
- Distance from Earth
- 69.47 light-years (21.3 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 1998
- Method
- Radial Velocity
- Facility
- W. M. Keck Observatory
Data from the NASA Exoplanet Archive, synced October 14, 2026.