HD 4203 b
A confirmed exoplanet orbiting HD 4203.
Compared with Earth
- Mass
- About 709 times Earth's mass.
- Year
- A year here lasts about 1.2 Earth years.
Planet
- Radius
- Unknown
- Mass
- 708.8 × Earth
- Density
- Unknown
- Equilibrium temperature
- Unknown
- Starlight received
- Unknown
- Orbital period
- 431.9 days
- Average distance from its star
- 1.17 AU
Star
- Host star
- HD 4203
- Spectral class
- G — sun-like
- Surface temperature
- 5,596 K
- Radius
- 1.42 × Sun
- Mass
- 1.25 × Sun
- Age
- Unknown
System
- Distance from Earth
- 265.4 light-years (81.38 parsecs)
- Stars in system
- 1
- Known planets
- 2
Discovery
- Year
- 2001
- Method
- Radial Velocity
- Facility
- W. M. Keck Observatory
Data from the NASA Exoplanet Archive, synced October 14, 2026.