Gliese 422 b

Gliese 422 b is an exoplanet orbiting the red dwarf Gliese 422 (Innes' star). Gliese 422 b was discovered in 2014, and discovery was confirmed in 2020.[2] It has a minimum mass of about ten times that of Earth.[2]

Gliese 422 b
Discovery
Discovered byM. Tuomi et al.[1]
Discovery date3 March 2014[1]
Radial velocity method
Orbital characteristics
0.111 AU (16,600,000 km)
Eccentricity0.11±0.04[2]
20.129±0.005 d[2]
Semi-amplitude4.49[1]
StarGliese 422
(Innes' star)

    It is located on the inner edge of circumstellar habitable zone (HZ) of Gliese 422, which extends from 0.11 to 0.21 astronomical units.[1] Gliese 422 b's semi-major axis is 0.119 astronomical units and its orbital period is 26.161 Earth days.[1]

    References
    1. Tuomi, Mikko; Jones, Hugh R. A; Barnes, John R; Anglada-Escudé, Guillem; Jenkins, James S (2014). "Bayesian search for low-mass planets around nearby M dwarfs. Estimates for occurrence rate based on global detectability statistics". Monthly Notices of the Royal Astronomical Society. 441 (2): 1545. arXiv:1403.0430. Bibcode:2014MNRAS.441.1545T. doi:10.1093/mnras/stu358.
    2. Feng, Fabo; Butler, R. Paul; Shectman, Stephen A.; Crane, Jeffrey D.; Vogt, Steve; Chambers, John; Jones, Hugh R. A.; Wang, Sharon Xuesong; Teske, Johanna K.; Burt, Jenn; Díaz, Matías R.; Thompson, Ian B. (2020). "Search for Nearby Earth Analogs. II. Detection of Five New Planets, Eight Planet Candidates, and Confirmation of Three Planets around Nine Nearby M Dwarfs". The Astrophysical Journal Supplement Series. 246 (1): 11. arXiv:2001.02577. Bibcode:2020ApJS..246...11F. doi:10.3847/1538-4365/ab5e7c.


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