Luyten b
| Discovery | |
|---|---|
| Discovered by | Astudillo-Defru et al., HARPS |
| Discovery date | 17 March 2017 |
| Radial velocity | |
| Orbital characteristics | |
| 0.091101+0.000019 −0.000017 AU | |
| Eccentricity | 0.10+0.09 −0.07 |
| 18.6498+0.0059 −0.0052 d | |
| Semi-amplitude | 1.61±0.15 m/s |
| Star | Luyten's Star |
| Physical characteristics | |
| Mass | ≥2.89+0.27 −0.26 M🜨 |
| Temperature | 259 K (−14 °C; 7 °F) |
Luyten b (more commonly known as Gliese 273b) is a confirmed exoplanet, likely rocky, orbiting within the habitable zone of the nearby red dwarf Luyten's Star. It is the fourth-closest potentially habitable exoplanet known, at a distance of 12 light-years. Only Proxima Centauri b, Ross 128 b, and GJ 1061 d are closer. Discovered alongside Gliese 273c in June 2017, Luyten b is a super-Earth of around 2.89 times the mass of Earth and receives only 6% more starlight than Earth, making it one of the best candidates for habitability.