HD 189733 b
A confirmed exoplanet orbiting HD 189733.
Compared with Earth
- Size
- About 13 times Earth's width.
- Mass
- About 359 times Earth's mass.
- Year
- A year here lasts about 2.2 Earth days.
Planet
- Radius
- 12.67 × Earth
- Mass
- 359.1 × Earth
- Density
- Unknown
- Equilibrium temperature
- Unknown
- Starlight received
- Unknown
- Orbital period
- 2.219 days
- Average distance from its star
- Unknown
Star
- Host star
- HD 189733
- Spectral class
- K — orange dwarf
- Surface temperature
- 5,052 K
- Radius
- 0.75 × Sun
- Mass
- 0.79 × Sun
- Age
- Unknown
System
- Distance from Earth
- 64.46 light-years (19.76 parsecs)
- Stars in system
- 2
- Known planets
- 1
Discovery
- Year
- 2005
- Method
- Radial Velocity
- Facility
- Haute-Provence Observatory
Data from the NASA Exoplanet Archive, synced October 14, 2026.