Gliese 367 b
Gliese 367 b, formally named Tahay, is a sub-Earth exoplanet orbiting the red dwarf star Gliese 367 (GJ 367), 30.7 light-years (9.4 parsecs) from Earth in the constellation of Vela. The exoplanet takes just 7.7 hours to orbit its star, one of the shortest orbits of any planet.
| Discovery | |
|---|---|
| Discovered by | Kristine Lam, et al. |
| Discovery site | TESS |
| Discovery date | December 2021 |
Detection method | Transit |
| Designations | |
Alternative names | Tahay, TOI-731.01 |
| Orbital characteristics | |
Semi-major axis | 0.00709±0.00027 AU |
| Eccentricity | 0.06+0.07 −0.04 |
Orbital period (sidereal) | 0.3219225±0.0000002 d |
| Inclination | 79.89°+0.87° −0.85° |
| 66°+41° −108° | |
| Semi-amplitude | 1.003±0.078 m/s |
| Star | Gliese 367 |
| Physical characteristics | |
Mean radius | 0.699±0.024 R🜨 |
| Mass | 0.633±0.050 M🜨 |
Mean density | 10.2±1.3 g/cm3 |
| Temperature | 1,728±90 K (1,455 °C; 2,651 °F, dayside) <847 K (574 °C; 1,065 °F, nightside) |
As of 2022, Gliese 367 b is the smallest known exoplanet within 10 parsecs of the Solar System, and the second-least massive after Proxima Centauri d.
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