GJ 367 c
GJ 367 c is a super-Earth orbiting the M1.0 V star GJ 367 in the constellation Vela. It lies about 31 light-years from Earth and was discovered in 2023 using the radial velocity method.
Is GJ 367 c in the Habitable Zone?
The position of GJ 367 c relative to the habitable zone of GJ 367 cannot be precisely determined from the available orbital data.
Habitable zone of GJ 367: 0.139–0.360 AU (conservative: 0.176–0.342 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 367 c — one full orbit around GJ 367 — lasts 11.5 Earth days, shorter than Mercury's 88-day year. Its orbit is mildly elliptical (eccentricity 0.09).
How Was GJ 367 c Discovered?
GJ 367 c was discovered in 2023 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 367 c?
GJ 367 c is 30.7 light-years (9.4 parsecs) from Earth. Light arriving here tonight left the planet around the year 1996. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 540,320 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 367 c scores 0.49, ranking #268 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: GJ 367
GJ 367
- Spectral type
- M1.0 V
- Surface temperature
- 3,522 K (Sun: 5,772 K)
- Mass
- 0.46 M☉
- Radius
- 0.46 R☉
- Luminosity
- 0.0289 L☉
The GJ 367 Planetary System
GJ 367 c is one of 3 known planets in the GJ 367 system. Its siblings:
GJ 367 c — Complete Data
| Mass (best estimate) | 4.13 Earth masses |
|---|---|
| Orbital period | 11.53 days |
| Eccentricity | 0.090 |
| Earth Similarity Index | 0.49 |
| Distance from Earth | 30.7 light-years (9.4 parsecs) |
| Constellation | Vela |
| Discovery method | Radial Velocity |
| Discovery facility | La Silla Observatory |
| Discovery year | 2023 |
Data: NASA Exoplanet Archive, last updated 2023-08-07. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About GJ 367 c
Is GJ 367 c habitable?
GJ 367 c is not known to orbit within the habitable zone of GJ 367, and as a super-Earth it is an unlikely candidate for life as we know it.
How far away is GJ 367 c?
GJ 367 c is about 31 light-years from Earth in the constellation Vela. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 540,320 years to get there.
How long is a year on GJ 367 c?
One orbit around GJ 367 takes 11.5 Earth days — short enough that 32 of its years would fit into one Earth year.
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