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Xi Aquilae b
View on Wikipedia| 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 |
| 136.75 ± 0.25 d 0.37439 y | |
| 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
[edit]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
[edit]References
[edit]- ^ a b Sato, Bun'ei; Izumiura, Hideyuki; Toyota, Eri; Kambe, Eiji; Ikoma, Masahiro; Omiya, Masashi; Masuda, Seiji; Takeda, Yoichi; Murata, Daisuke; Itoh, Yoichi; Ando, Hiroyasu; Yoshida, Michitoshi; Kokubo, Eiichiro; Ida, Shigeru (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. arXiv:0802.2590. Bibcode:2008PASJ...60..539S. doi:10.1093/pasj/60.3.539.
- ^ 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. arXiv:2411.06705. Bibcode:2025MNRAS.536.2485W. doi:10.1093/mnras/stae2769.
- ^ NameExoWorlds: An IAU Worldwide Contest to Name Exoplanets and their Host Stars Archived 2024-09-17 at the Wayback Machine. IAU.org. 9 July 2014
- ^ "NameExoWorlds The Process". Archived from the original on 2015-08-15. Retrieved 2015-09-05.
- ^ Final Results of NameExoWorlds Public Vote Released Archived 2025-03-05 at the Wayback Machine, International Astronomical Union, 15 December 2015.
- ^ "NameExoWorlds The Approved Names". Archived from the original on 2018-02-01. Retrieved 2016-01-05.
External links
[edit]- "ksi Aql". Exoplanets. Archived from the original on 2009-11-25. Retrieved 2008-06-25.
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