GJ 1002 b
Potentially habitable exoplanet
From Wikipedia, the free encyclopedia
GJ 1002 b (also designated as Gliese 1002 b) is a potentially habitable exoplanet located 16 light-years away, in the constellation of Cetus.[1] The planet, which has an Earth Similarity Index of 86%, is in the habitable zone of its parent star.[2] GJ 1002 b has a minimum mass of 1.08 Earth masses and is estimated by the Planetary Habitability Laboratory to have 1.03 times the radius of Earth and a surface temperature of 261 Kelvin.[3]
| Discovery[1] | |
|---|---|
| Discovery date | December 2022 |
| Radial velocity | |
| Orbital characteristics[1] | |
| 0.0457±0.0013 AU | |
| 10.3465±0.027 d | |
| Semi-amplitude | 1.31±0.14 m/s |
| Star | GJ 1002 |
| Physical characteristics[1] | |
| Mass | ≥1.08±0.13 M🜨 |
| Temperature | Teq: 230.9 ± 6.7 K (−42.25 ± 6.70 °C; −44.05 ± 12.06 °F) |
Detection
GJ 1002 b was detected in 2022 via the radial velocity method, which was used to measure the planet's minimum mass.[1]
Host star
The host star, GJ 1002, is a quiet M5.5V type red dwarf not believed to release flares that could harm the atmosphere.[4] The planet orbits its host star at a distance of 0.0457 AU (Astronomical units), with a 10.3 day orbital period and a 0.0 eccentricity.[5][6]
See also
- Proxima Centauri b, a potentially habitable planet of similar physical characteristics that is also orbiting a small red dwarf star.
