Kepler-278 c
A confirmed exoplanet orbiting Kepler-278.
Compared with Earth
- Size
- About 3.3 times Earth's width.
- Mass
- About 35 times Earth's mass.
- Temperature
- About 219 °C (426 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 54 times the starlight Earth gets from the Sun.
- Year
- A year here lasts about 51 Earth days.
Planet
- Radius
- 3.268 × Earth
- Mass
- 34.9 × Earth
- Density
- 5.5 g/cm³
- Equilibrium temperature
- 492 K
- Starlight received
- 54.3 × Earth
- Orbital period
- 51.11 days
- Average distance from its star
- 0.287 AU
Star
- Host star
- Kepler-278
- Spectral class
- K — orange dwarf
- Surface temperature
- 4,965 K
- Radius
- 2.861 × Sun
- Mass
- 1.227 × Sun
- Age
- 5.761 billion years
System
- Distance from Earth
- 1,445 light-years (443 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.