Kepler-109 c
A confirmed exoplanet orbiting Kepler-109.
Compared with Earth
- Size
- About 2.7 times Earth's width.
- Mass
- About 8.2 times Earth's mass.
- Temperature
- About 586 °C (1,087 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 91 times the starlight Earth gets from the Sun.
- Year
- A year here lasts about 21 Earth days.
Planet
- Radius
- 2.65 × Earth
- Mass
- 8.2 × Earth
- Density
- 2.4 g/cm³
- Equilibrium temperature
- 859 K
- Starlight received
- 91 × Earth
- Orbital period
- 21.22 days
- Average distance from its star
- 0.1546 AU
Star
- Host star
- Kepler-109
- Spectral class
- G — sun-like
- Surface temperature
- 5,950 K
- Radius
- 1.387 × Sun
- Mass
- 1.094 × Sun
- Age
- 6.2 billion years
System
- Distance from Earth
- 1,549 light-years (474.9 parsecs)
- Stars in system
- 1
- Known planets
- 2
Discovery
- Year
- 2014
- Method
- Transit
- Facility
- Kepler
Data from the NASA Exoplanet Archive, synced October 14, 2026.