Astronomy:HD 221416 b
From HandWiki
Short description: Gas giant exoplanet orbiting HD 221416
| Discovery | |
|---|---|
| Discovery date | 2019 |
| Transit | |
| Orbital characteristics | |
| 0.1228 | |
| Eccentricity | 0.115 |
| Orbital period | 14.3 days |
| Star | HD 221416 |
| Physical characteristics | |
| Mean radius | 0.836 Jupiters |
| Mass | 0.19 Jupiters |
HD 221416 b is a confirmed hot Saturn type exoplanet located 312 light years away from earth and orbiting the late subgiant K-type star, HD 221416. It is part of a small but growing number of discovered exoplanets orbiting evolved stars.[1][2] This planet was discovered in 2019 by using the primary transit method.[3]
Physical characteristics
The exoplanet orbits the star at a close distance of 0.1228 AU, an eccentricity of 0.115 and an inclination of 85.75°.[4]
Orbital characteristics
The planet orbits HD 221416 at a distance of 0.1228 astronomical units with an orbital eccentricity of 0.115 and an orbital inclination of 85.75000. The planet orbits the star every 14.3 days (0.04 earth years).[5]
References
- ↑ "Exoplanet-catalog" (in en). https://exoplanets.nasa.gov/exoplanet-catalog/7351/hd-221416-b/.
- ↑ Lazaro, Enrico de (2019-03-29). "Hot-Saturn Exoplanet Discovered by TESS, Characterized Using Asteroseismology | Sci.News" (in en-US). https://www.sci.news/astronomy/hot-saturn-exoplanet-tess-asteroseismology-07041.html.
- ↑ Martin, Pierre-Yves (2021). "Planet HD 221416 b" (in en). Extrasolar Planets Encyclopaedia. https://exoplanet.eu/catalog/hd_221416_b--7308/.
- ↑ "HD 221416 | NASA Exoplanet Archive". https://exoplanetarchive.ipac.caltech.edu/overview/HD%20221416.
- ↑ Guide, Universe. "HD 221416 b ExoPlanet Facts" (in en). https://www.universeguide.com/exoplanet/1221/hd221416b.
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