Astronomy:Gliese 422 b
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Short description: Mini Neptune orbiting Gliese 422
| Discovery | |
|---|---|
| Discovered by | M. Tuomi et al.[1] |
| Discovery date | 3 March 2014[1] |
| Radial velocity | |
| Orbital characteristics | |
| 0.111 AU (16,600,000 km) | |
| Eccentricity | 0.11±0.04[2] |
| Orbital period | 20.129±0.005 d[2] |
| Semi-amplitude | 4.49[1] |
| Star | Gliese 422 (Innes' star) |
Gliese 422 b is an exoplanet orbiting the red dwarf Gliese 422 (Innes' star). Gliese 422 b was discovered in 2014, and the discovery was confirmed in 2020.[2] It has a minimum mass of about ten times that of Earth. [2]
It is located on the inner edge of circumstellar habitable zone (HZ) of Gliese 422, which extends from 0.11 to 0.21 AU.[1] Gliese 422 b's semi-major axis is 0.119 AU and its orbital period is 26.161 Earth days.[1]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 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. doi:10.1093/mnras/stu358. Bibcode: 2014MNRAS.441.1545T.
- ↑ 2.0 2.1 2.2 2.3 Feng, Fabo; Butler, R. Paul; Shectman, Stephen A.; Crane, Jeffrey D.; Vogt, Steve; Chambers, John; Jones, Hugh R. A.; Wang, Sharon Xuesong et al. (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. doi:10.3847/1538-4365/ab5e7c. Bibcode: 2020ApJS..246...11F.
External links
- "Planet GJ 422 b". Extrasolar Planets Encyclopaedia. 25 May 2014. https://exoplanet.eu/catalog/gj_422_b--1534/.
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