GJ 317 b
A confirmed exoplanet orbiting GJ 317.
Compared with Earth
- Mass
- About 536 times Earth's mass.
- Year
- A year here lasts about 1.9 Earth years.
Planet
- Radius
- Unknown
- Mass
- 536.5 × Earth
- Density
- Unknown
- Equilibrium temperature
- Unknown
- Starlight received
- Unknown
- Orbital period
- 695.7 days
- Average distance from its star
- 1.138 AU
Star
- Host star
- GJ 317
- Spectral class
- M — red dwarf
- Surface temperature
- 3,496 K
- Radius
- 0.403 × Sun
- Mass
- 0.402 × Sun
- Age
- Unknown
System
- Distance from Earth
- 49.57 light-years (15.2 parsecs)
- Stars in system
- 1
- Known planets
- 2
Discovery
- Year
- 2007
- Method
- Radial Velocity
- Facility
- W. M. Keck Observatory
Data from the NASA Exoplanet Archive, synced October 14, 2026.