Английская Википедия:Gliese 357

Материал из Онлайн справочника
Перейти к навигацииПерейти к поиску

Шаблон:Short description Шаблон:Starbox begin Шаблон:Starbox image Шаблон:Starbox observe Шаблон:Starbox character Шаблон:Starbox astrometry Шаблон:Starbox detail Шаблон:Starbox catalog Шаблон:Starbox reference Шаблон:Starbox end GJ 357 (also designated Gliese 357) is an M-type main sequence star with an unusually low starspot activity.[1] It is located 31 light-years from the Solar System.[2] The system is part of the Hydra constellation.[2]

Planetary system

The star has three confirmed exoplanets in its orbit,[3] one of which, Gliese 357 d, is considered to be a "super-Earth" within the circumstellar habitable zone.[4][2][5][6]

Planets b and c are close to 3:7 mean-motion resonance. Presuming resonance chain crosses gap to outermost and cold super-terrestrial d and the resonances are simple, GJ 357 may have much more suitable planet for life at approx. 27.5 day period and almost Earth's flux, and (less likely) Mars-sized planet in 2:1 period ratio with GJ 357 c and 2:3 ratio with hypothetical HZ rocky one.Шаблон:Citation needed Шаблон:OrbitboxPlanet begin Шаблон:OrbitboxPlanet Шаблон:OrbitboxPlanet Шаблон:OrbitboxPlanet Шаблон:Orbitbox end

References

Шаблон:Reflist Шаблон:Stars of Hydra

Шаблон:Red-dwarf-stub