Kepler-18 b
A confirmed exoplanet orbiting Kepler-18.
Compared with Earth
- Size
- About 2 times Earth's width.
- Mass
- About 6.9 times Earth's mass.
- Year
- A year here lasts about 3.5 Earth days.
Planet
- Radius
- 2 × Earth
- Mass
- 6.9 × Earth
- Density
- 4.9 g/cm³
- Equilibrium temperature
- Unknown
- Starlight received
- Unknown
- Orbital period
- 3.505 days
- Average distance from its star
- 0.0447 AU
Star
- Host star
- Kepler-18
- Spectral class
- G — sun-like
- Surface temperature
- 5,345 K
- Radius
- 1.108 × Sun
- Mass
- 0.972 × Sun
- Age
- 10 billion years
System
- Distance from Earth
- 1,412 light-years (433 parsecs)
- Stars in system
- 1
- Known planets
- 3
Discovery
- Year
- 2011
- Method
- Transit
- Facility
- Kepler
Data from the NASA Exoplanet Archive, synced October 14, 2026.