HD 221416 b is a confirmed hot-Saturn-type exoplanet 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]
| Discovery | |
|---|---|
| Discovery date | 2019 |
| Transit | |
| Orbital characteristics | |
| 0.1228 | |
| Eccentricity | 0.115 |
| 14.3 days | |
| Star | HD 221416 |
| Physical characteristics | |
| 0.836 Jupiters | |
| Mass | 0.19 Jupiters |
Physical characteristics
editThe 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
editThe 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
edit- ^ "Exoplanet-catalog". Exoplanet Exploration: Planets Beyond our Solar System. Retrieved 1 November 2023.
- ^ Lazaro, Enrico de (29 March 2019). "Hot-Saturn Exoplanet Discovered by TESS, Characterized Using Asteroseismology | Sci.News". Sci.News: Breaking Science News. Retrieved 1 November 2023.
- ^ Martin, Pierre-Yves (2021). "Planet HD 221416 b". Extrasolar Planets Encyclopaedia. Retrieved 3 November 2023.
- ^ "HD 221416 | NASA Exoplanet Archive". exoplanetarchive.ipac.caltech.edu. Retrieved 1 November 2023.
- ^ Guide, Universe. "HD 221416 b ExoPlanet Facts". www.universeguide.com. Retrieved 3 November 2023.