HD 118203 b
A confirmed exoplanet orbiting HD 118203.
Compared with Earth
- Size
- About 13 times Earth's width.
- Mass
- About 680 times Earth's mass.
- Temperature
- About 1,088 °C (1,990 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Year
- A year here lasts about 6.1 Earth days.
Planet
- Radius
- 12.78 × Earth
- Mass
- 680.2 × Earth
- Density
- 1.79 g/cm³
- Equilibrium temperature
- 1,361 K
- Starlight received
- Unknown
- Orbital period
- 6.135 days
- Average distance from its star
- 0.0713 AU
Star
- Host star
- HD 118203
- Spectral class
- G — sun-like
- Surface temperature
- 5,742 K
- Radius
- 2.04 × Sun
- Mass
- 1.27 × Sun
- Age
- 4.73 billion years
System
- Distance from Earth
- 300.9 light-years (92.26 parsecs)
- Stars in system
- 1
- Known planets
- 2
Discovery
- Year
- 2005
- Method
- Radial Velocity
- Facility
- Haute-Provence Observatory
Data from the NASA Exoplanet Archive, synced October 14, 2026.