Kepler-40 b
A confirmed exoplanet orbiting Kepler-40.
Compared with Earth
- Size
- About 13 times Earth's width.
- Mass
- About 699 times Earth's mass.
- Temperature
- About 1,347 °C (2,456 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Year
- A year here lasts about 6.9 Earth days.
Planet
- Radius
- 13.11 × Earth
- Mass
- 699.2 × Earth
- Density
- 1.68 g/cm³
- Equilibrium temperature
- 1,620 K
- Starlight received
- Unknown
- Orbital period
- 6.873 days
- Average distance from its star
- 0.08 AU
Star
- Host star
- Kepler-40
- Spectral class
- F — yellow-white
- Surface temperature
- 6,510 K
- Radius
- 2.13 × Sun
- Mass
- 1.48 × Sun
- Age
- 2.8 billion years
System
- Distance from Earth
- 7,518 light-years (2,305 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.