Kepler-8 b
A confirmed exoplanet orbiting Kepler-8.
Compared with Earth
- Size
- About 16 times Earth's width.
- Mass
- About 188 times Earth's mass.
- Temperature
- About 1,407 °C (2,564 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Year
- A year here lasts about 3.5 Earth days.
Planet
- Radius
- 15.87 × Earth
- Mass
- 187.5 × Earth
- Density
- 0.27 g/cm³
- Equilibrium temperature
- 1,680 K
- Starlight received
- Unknown
- Orbital period
- 3.522 days
- Average distance from its star
- 0.0474 AU
Star
- Host star
- Kepler-8
- Spectral class
- F — yellow-white
- Surface temperature
- 6,213 K
- Radius
- 1.486 × Sun
- Mass
- 1.213 × Sun
- Age
- Unknown
System
- Distance from Earth
- 3,333 light-years (1,022 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2010
- Method
- Transit
- Facility
- Kepler
Data from the NASA Exoplanet Archive, synced October 14, 2026.