Astronomy:Xi Aquilae b
| Discovery | |
|---|---|
| Discovered by | Sato et al.[1] |
| Discovery site | Okayama Planet Search Program, Japan |
| Discovery date | 19 February 2008 |
| Radial velocity | |
| Orbital characteristics | |
| 0.68 AU (102 million km) | |
| Eccentricity | 0 |
| Orbital period | 136.75 ± 0.25 d 0.37439 y |
| astron|astron|helion}} | 2,453,001.7 ± 1.4 |
| Star | Xi Aquilae |
| Physical characteristics | |
| Mass | ≥2.0 and <37.1[2] MJ |
Xi Aquilae b (abbreviated ξ Aquilae b, ξ Aql b), formally named Fortitudo /fɔːrtɪˈtjuːdoʊ/, is an extrasolar planet approximately 184 light-years from the Sun in the constellation of Aquila. The planet was discovered orbiting the yellow giant star Xi Aquilae in 2008. The planet has a minimum mass of 2.8 Jupiters and a period of 137 days.[1]
Name
Following its discovery the planet was designated Xi Aquilae b. In July 2014 the International Astronomical Union (IAU) launched NameExoWorlds, a process for giving proper names to certain exoplanets and their host stars.[3] The process involved public nomination and voting for the new names.[4] In December 2015, the IAU announced the winning name was Fortitudo for this planet.[5]
The winning name was submitted by Libertyer, a student club at Hosei University of Tokyo, Japan. Fortitudo is Latin for 'fortitude'. Aquila is Latin for 'eagle', a symbol of fortitude—emotional and mental strength in the face of adversity.[6]
See also
References
- ↑ 1.0 1.1 Sato, Bun'ei; Izumiura, Hideyuki; Toyota, Eri; Kambe, Eiji; Ikoma, Masahiro; Omiya, Masashi; Masuda, Seiji; Takeda, Yoichi et al. (2008). "Planetary Companions around Three Intermediate-Mass G and K Giants: 18 Delphini, ξ Aquilae and HD 81688". Publications of the Astronomical Society of Japan 60 (3): 539–550. doi:10.1093/pasj/60.3.539. Bibcode: 2008PASJ...60..539S. http://pasj.asj.or.jp/v60/n3/600314/600314-frame.html.
- ↑ Wallace, A. L.; Casey, A. R.; Brown, A. G. A.; Castro-Ginard, A. (2024-11-10). "Detection and Characterisation of Giant Planets with Gaia Astrometry". Monthly Notices of the Royal Astronomical Society 536 (3): 2485. doi:10.1093/mnras/stae2769. Bibcode: 2025MNRAS.536.2485W.
- ↑ NameExoWorlds: An IAU Worldwide Contest to Name Exoplanets and their Host Stars . IAU.org. 9 July 2014
- ↑ "NameExoWorlds The Process". http://nameexoworlds.iau.org/process.
- ↑ Final Results of NameExoWorlds Public Vote Released , International Astronomical Union, 15 December 2015.
- ↑ "NameExoWorlds The Approved Names". http://nameexoworlds.iau.org/names.
External links
Coordinates: 
19h 54m 15s, +08° 27′ 41″
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