Gliese 887 c
Super-Earth orbiting Gliese 887
From Wikipedia, the free encyclopedia
Gliese 887 c (GJ 887 c) or Lacaille 9352 c is an exoplanet announced in 2020 and located 10.74 light years away, in the constellation of Piscis Austrinus.[3]
| Discovery[1] | |
|---|---|
| Discovered by | Tuomi et al. |
| Discovery date | June 2019 |
| Radial velocity | |
| Designations | |
| Lacaille 9352 c | |
| Orbital characteristics | |
| 0.120±0.004 AU[2] | |
| Eccentricity | 0.03+0.21 −0.03[1] |
| 21.789+0.004 −0.005 d[2] | |
| Semi-amplitude | 2.8±0.4[2] |
| Star | Gliese 887 |
| Physical characteristics | |
| Mass | ≥7.6±1.2 M🜨[2] |
| Temperature | 352 K (79 °C; 174 °F)[2] |
It was detected using the radial velocity method from observations with HARPS in Chile and HIRES in Hawaii.[2]
Characteristics
Gliese 887 c is considered a Super-Earth with a minimum mass of 7.6 Earth masses.[4]
With an orbital period of 21.8 days, the exoplanet is located at 0.12 AU from the star, which is close to the inner edge of the habitable zone (but still outside).[5]
The exoplanet has a calculated equilibrium temperature of 352 K (79 °C; 174 °F).[2]
Host star
The planet orbits the red dwarf star Gliese 887, which has an age of 4.57 billion years.[6]
