GJ 1137 c
GJ 1137 c is a super-Earth orbiting the K2 IV-V star HD 93083 in the constellation Antlia. It lies about 93 light-years from Earth and was discovered in 2026 using the radial velocity method.
Is GJ 1137 c in the Habitable Zone?
GJ 1137 c orbits inside the inner edge of the habitable zone of HD 93083. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of HD 93083: 0.499–1.205 AU (conservative: 0.632–1.142 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
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Temperature on GJ 1137 c
GJ 1137 c receives 58.40 times the stellar energy that Earth gets from the Sun.
Orbit and Year Length
A year on GJ 1137 c — one full orbit around HD 93083 — lasts 9.64 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.084 AU — closer to its star than Mercury is to the Sun.
How Was GJ 1137 c Discovered?
GJ 1137 c was discovered in 2026 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 1137 c?
GJ 1137 c is 93.0 light-years (28.5 parsecs) from Earth. Light arriving here tonight left the planet around the year 1933. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 1,636,800 years to make the journey.
The Host Star: HD 93083
HD 93083
- Spectral type
- K2 IV-V
- Surface temperature
- 5,034 K (Sun: 5,772 K)
- Mass
- 0.84 M☉
- Radius
- 0.84 R☉
- Luminosity
- 0.4070 L☉
- Age
- 10.7 billion years (Sun: 4.6)
The HD 93083 Planetary System
GJ 1137 c is one of 2 known planets in the HD 93083 system. Its siblings:
- HD 93083 b (Cold Gas Giant)
GJ 1137 c — Complete Data
| Mass (best estimate) | 5.12 Earth masses |
|---|---|
| Orbital period | 9.64 days |
| Orbital distance | 0.084 AU |
| Stellar irradiation | 58.40× Earth |
| Distance from Earth | 93.0 light-years (28.5 parsecs) |
| Constellation | Antlia |
| Discovery method | Radial Velocity |
| Discovery facility | La Silla Observatory |
| Discovery year | 2026 |
Data: NASA Exoplanet Archive, last updated 2026-04-30. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About GJ 1137 c
Is GJ 1137 c habitable?
No — GJ 1137 c orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is GJ 1137 c?
GJ 1137 c is about 93 light-years from Earth in the constellation Antlia. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 1,636,800 years to get there.
How long is a year on GJ 1137 c?
One orbit around HD 93083 takes 9.6 Earth days — short enough that 38 of its years would fit into one Earth year.
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