The GJ 317 System
GJ 317 is a planetary system in the constellation Pyxis hosting 2 confirmed exoplanets, about 50 light-years from Earth.
GJ 317: Star and Habitable Zone
GJ 317
- Spectral type
- M3.5 V
- Surface temperature
- 3,496 K (Sun: 5,772 K)
- Mass
- 0.40 M☉
- Radius
- 0.40 R☉
Habitable zone of GJ 317: 0.121–0.313 AU (conservative: 0.153–0.297 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
See the full interactive habitable-zone view in the Exoplanet Explorer app ›
All 2 Planets in the GJ 317 System
Discovery History
The first planet found here, GJ 317 b, was discovered in 2007 using the radial velocity method. The most recent addition, GJ 317 c, followed in 2016.
Frequently Asked Questions About GJ 317
How many planets does GJ 317 have?
GJ 317 has 2 confirmed exoplanets. More may await discovery.
Are any planets in the GJ 317 system habitable?
None of the known planets in GJ 317 orbit within the star's habitable zone.
How far away is GJ 317?
GJ 317 is about 50 light-years from Earth in the constellation Pyxis.
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