GJ 341 b
GJ 341 b is a terrestrial planet orbiting the M1 star GJ 341 in the constellation Carina. It lies about 34 light-years from Earth and was discovered in 2025 using the transit method.
How Big Is GJ 341 b?
GJ 341 b has a radius of 0.88 times that of Earth. Its mass is 4.0 times that of Earth.
Is GJ 341 b in the Habitable Zone?
The position of GJ 341 b relative to the habitable zone of GJ 341 cannot be precisely determined from the available orbital data.
Habitable zone of GJ 341: 0.176–0.450 AU (conservative: 0.223–0.427 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
See the full interactive habitable-zone view in the Exoplanet Explorer app ›
Temperature on GJ 341 b
GJ 341 b receives 13.80 times the stellar energy that Earth gets from the Sun.
Orbit and Year Length
A year on GJ 341 b — one full orbit around GJ 341 — lasts 7.58 Earth days, shorter than Mercury's 88-day year.
How Was GJ 341 b Discovered?
GJ 341 b was discovered in 2025 using the transit method, with observations from Transiting Exoplanet Survey Satellite (TESS).
The transit method watches a star for the tiny, regular dip in brightness that occurs when a planet crosses in front of it. The depth and timing of these dips reveal the planet's size and orbital period.
How Far Away Is GJ 341 b?
GJ 341 b is 34.1 light-years (10.5 parsecs) from Earth. Light arriving here tonight left the planet around the year 1992. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 600,160 years to make the journey.
The Host Star: GJ 341
GJ 341
- Spectral type
- M1
- Surface temperature
- 3,770 K (Sun: 5,772 K)
- Mass
- 0.48 M☉
- Radius
- 0.51 R☉
Planetary System
GJ 341 b is the only planet known to orbit GJ 341 so far.
GJ 341 b — Complete Data
| Radius | 0.880 Earth radii (0.079 Jupiter radii) |
|---|---|
| Mass | 4.00 Earth masses (0.013 Jupiter masses) |
| Orbital period | 7.58 days |
| Stellar irradiation | 13.80× Earth |
| Distance from Earth | 34.1 light-years (10.5 parsecs) |
| Constellation | Carina |
| Discovery method | Transit |
| Discovery facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery year | 2025 |
Data: NASA Exoplanet Archive, last updated 2025-02-25. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About GJ 341 b
Is GJ 341 b habitable?
GJ 341 b is not known to orbit within the habitable zone of GJ 341, and as a terrestrial planet it is an unlikely candidate for life as we know it.
How far away is GJ 341 b?
GJ 341 b is about 34 light-years from Earth in the constellation Carina. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 600,160 years to get there.
How big is GJ 341 b compared to Earth?
GJ 341 b has 0.88 times the radius of Earth and about 4.0 times its mass.
How long is a year on GJ 341 b?
One orbit around GJ 341 takes 7.6 Earth days — short enough that 48 of its years would fit into one Earth year.
Explore GJ 341 b in the app
Browse, filter and compare 6,000+ exoplanets on iPhone, iPad and Apple Watch — with habitable-zone views, widgets and offline data.
