Kepler-398 d
A confirmed exoplanet orbiting Kepler-398.
Compared with Earth
- Size
- About 88% of Earth's width.
- Year
- A year here lasts about 6.8 Earth days.
Planet
- Radius
- 0.88 × Earth
- Mass
- Unknown
- Density
- Unknown
- Equilibrium temperature
- Unknown
- Starlight received
- Unknown
- Orbital period
- 6.834 days
- Average distance from its star
- Unknown
Star
- Host star
- Kepler-398
- Spectral class
- K — orange dwarf
- Surface temperature
- 4,557 K
- Radius
- 0.67 × Sun
- Mass
- 0.72 × Sun
- Age
- 2.34 billion years
System
- Distance from Earth
- 578.5 light-years (177.4 parsecs)
- Stars in system
- 1
- Known planets
- 3
Discovery
- Year
- 2016
- Method
- Transit
- Facility
- Kepler
Data from the NASA Exoplanet Archive, synced October 14, 2026.