GJ 1132 c
GJ 1132 c is a super-Earth orbiting GJ 1132 in the constellation Vela. It lies about 41 light-years from Earth and was discovered in 2018 using the radial velocity method.
Is GJ 1132 c in the Habitable Zone?
The position of GJ 1132 c relative to the habitable zone of GJ 1132 cannot be precisely determined from the available orbital data.
Habitable zone of GJ 1132: 0.057–0.149 AU (conservative: 0.072–0.141 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
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Orbit and Year Length
A year on GJ 1132 c — one full orbit around GJ 1132 — lasts 8.93 Earth days, shorter than Mercury's 88-day year. Its orbit is mildly elliptical (eccentricity 0.19).
How Was GJ 1132 c Discovered?
GJ 1132 c was discovered in 2018 using the radial velocity method, with observations from La Silla Observatory.
The radial velocity method measures the subtle wobble of a star caused by the gravitational pull of an orbiting planet, visible as periodic shifts in the star's light spectrum. The size of the wobble reveals the planet's minimum mass.
How Far Away Is GJ 1132 c?
GJ 1132 c is 41.1 light-years (12.6 parsecs) from Earth. Light arriving here tonight left the planet around the year 1985. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 723,360 years to make the journey.
Earth Similarity Index
The Earth Similarity Index (ESI) scores how physically similar a planet is to Earth, from 0 to 1, based on radius, density, escape velocity and surface temperature. GJ 1132 c scores 0.73, ranking #41 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: GJ 1132
GJ 1132
- Surface temperature
- 3,229 K (Sun: 5,772 K)
- Mass
- 0.19 M☉
- Radius
- 0.22 R☉
- Luminosity
- 0.0048 L☉
The GJ 1132 Planetary System
GJ 1132 c is one of 2 known planets in the GJ 1132 system. Its siblings:
- GJ 1132 b (Terrestrial)
GJ 1132 c — Complete Data
| Mass (best estimate) | 2.91 Earth masses |
|---|---|
| Orbital period | 8.93 days |
| Eccentricity | 0.190 |
| Earth Similarity Index | 0.73 |
| Distance from Earth | 41.1 light-years (12.6 parsecs) |
| Constellation | Vela |
| Discovery method | Radial Velocity |
| Discovery facility | La Silla Observatory |
| Discovery year | 2018 |
Data: NASA Exoplanet Archive, last updated 2026-05-07. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About GJ 1132 c
Is GJ 1132 c habitable?
GJ 1132 c is not known to orbit within the habitable zone of GJ 1132, and as a super-Earth it is an unlikely candidate for life as we know it.
How far away is GJ 1132 c?
GJ 1132 c is about 41 light-years from Earth in the constellation Vela. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 723,360 years to get there.
How long is a year on GJ 1132 c?
One orbit around GJ 1132 takes 8.9 Earth days — short enough that 41 of its years would fit into one Earth year.
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