K2-155d
K2-155d is a potentially habitable Super-Earth exoplanet in the K2-155 system. It is the outermost of three known planets orbiting around the K-type star K2-155 in the constellation Taurus. It is one of 15 new exoplanets around red dwarf stars discovered by Japanese astronomer "Teruyuki Hirano" of the Tokyo Institute of Technology and his team. The team used data from NASA's Kepler Space Telescope during its extended K2 "Second Light" mission. K2-155d orbits near the so-called habitable zone of its system, and has the potential to host liquid water.
| Discovery | |
|---|---|
| Discovered by | Teruyuki Hirano |
| Discovery site | Tokyo Institute of Technology |
| Discovery date | March 2018 |
Detection method | Transit method |
| Orbital characteristics | |
Semi-major axis | 0.1886 (± 0.0066) AU |
| Eccentricity | unknown |
Orbital period (sidereal) | 40.6835 (± 0.0031) d |
| Inclination | unknown |
| Star | K2-155 |
| Physical characteristics | |
Mean radius | 1.64 +0.18 −0.17 R🜨 |
Mean density | 5.41 ± 1.11 kg/m3 (9.12 ± 1.87 lb/cu yd) |
| Temperature | 289 K (16 °C; 61 °F) |
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