The GJ 667 C System
GJ 667 C is a planetary system in the constellation Scorpius hosting 5 confirmed exoplanets around 3 stars, about 24 light-years from Earth. 3 of its planets orbit within the habitable zone, where liquid water could exist on a planetary surface.
Star GJ 667 C and Its Habitable Zone
GJ 667 C
- Spectral type
- M1.5 V
- Surface temperature
- 3,350 K (Sun: 5,772 K)
- Mass
- 0.33 M☉
- Luminosity
- 0.0137 L☉
- Age
- 2.0 billion years (Sun: 4.6)
Habitable zone of GJ 667 C: 0.096–0.251 AU (conservative: 0.122–0.238 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
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All 5 Planets in the GJ 667 C System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| GJ 667 C b | — | 7.2 d | — | 0.44 | 2012 |
| GJ 667 C c HZ | Super Earth | 28 d | — | 0.80 | 2013 |
| GJ 667 C e HZ | Super Earth | 62 d | — | 0.60 | 2013 |
| GJ 667 C f HZ | Super Earth | 39 d | — | 0.76 | 2013 |
| GJ 667 C g | Super Earth | 256 d | — | 0.31 | 2013 |
Discovery History
The first planet found here, GJ 667 C b, was discovered in 2012 using the radial velocity method. The most recent addition, GJ 667 C g, followed in 2013.
- 2012 — GJ 667 C b (Radial Velocity)
- 2013 — GJ 667 C c (Radial Velocity)
- 2013 — GJ 667 C e (Radial Velocity)
- 2013 — GJ 667 C f (Radial Velocity)
- 2013 — GJ 667 C g (Radial Velocity)
Frequently Asked Questions About GJ 667 C
How many planets does GJ 667 C have?
GJ 667 C has 5 confirmed exoplanets distributed around its 3 stars. More may await discovery.
Are any planets in the GJ 667 C system habitable?
3 planets in the system orbit within the habitable zone, where liquid water could exist. Actual habitability depends on atmospheres and composition, which are not yet known.
How far away is GJ 667 C?
GJ 667 C is about 24 light-years from Earth in the constellation Scorpius.
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