Gliese 317
system
Gliese 317 is a red dwarf 49.6 light-years away in Pyxis, unusual for hosting not one but two giant planets — a rare find, since giants seldom form around low-mass stars. Both were detected from the star's radial-velocity wobble.
Open in 3D viewSee Gliese 317 in the live, interactive 3D map
Key facts
Type
Red dwarf + 2 giants
Distance
49.6 light-years
Confirmed planets
2
Notable
Two giants around a red dwarf (rare)
Science
Classification
- Type
- Single red-dwarf system
- Central star
- Gliese 317 — M3.5V red dwarf (~3496 K, 0.40 M☉)
Planets
- Confirmed planets
- 2 · b (super-Jupiter) and c (outer giant)
- Notable
- Two giants around a red dwarf — a rare configuration
- Masses
- b a dynamical mass; c a radial-velocity minimum
Distance
- Distance
- 49.6 light-years · in Pyxis
How we know
- Note
- Two confirmed giant planets (NASA Exoplanet Archive, checked 2026-07-07), found by radial velocity — neither transits, so no size or density is measured. Map distance is symbolic; the real gap is 49.6 light-years.
Discovery & history
- Name
- A catalogue designation (Gliese 317); no proper name.
A giant planet was found in 2007 and a second, more distant giant confirmed in 2016 from years of radial-velocity tracking.
Images
Images from open archives · credit shown per image