Gliese 414 Ab
Gliese 414 Ab, also known as GJ 414 Ab, is a sub-Neptune exoplanet orbiting Gliese 414 A, an orange dwarf located 39 light-years from Earth, in the constellation Ursa Major. It is at least 7.6 times more massive than the Earth and is 3 times larger, having a diameter of 37600 km. It orbits its host star at a distance of 0.24 astronomical units (36,000,000 km), completing one revolution every 51 days. The distance of Gliese 414 A b from its star makes it to be located in the inner part of the optmistic habitable zone, and the planet has a equilibrium temperature of 35.5 °C.
Artistic representation of a sub-Neptune exoplanet. | |
| Discovery | |
|---|---|
| Discovered by | Dedrick et al. |
| Discovery date | 2020 |
Detection method | Radial velocity |
| Designations | |
Alternative names | HD 97101 Ab, HIP 54646 b, LHS 2367 b, G 119-60 b, TIC 9001920 b, WISEA J111105.67+302643.6 b |
| Orbital characteristics | |
| Periastron | 0.13 AU |
| Apoastron | 0.34 AU |
Semi-major axis | 0.24±0.01 AU |
| Eccentricity | 0.45+0.19 −0.22 |
Orbital period (sidereal) | 50.817+0.031 −0.03 d |
| 111°+36° −52° | |
| Star | Gliese 414 A |
| Physical characteristics | |
Mean radius | 2.95+1.11 −0.91 R🜨 |
| Mass | >7.6+2.44 −2.19 M🜨 |
| Temperature | 308.6±33.5 K (35.5 °C (95.9 °F)) |
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