Xi Aquilae b
| Exoplanet | List of exoplanets | |
|---|---|---|
| Parent star | ||
| Star | Xi Aquilae | |
| Constellation | Aquila | |
| Right ascension | (α) | 19h 54m 15s |
| Declination | (δ) | +08° 27′ 41″ |
| Apparent magnitude | (mV) | 4.72 |
| Distance | 205 ± 13 ly (62.7 ± 3.9 pc) | |
| Spectral type | G9IIIb | |
| Orbital elements | ||
| Semi-major axis | (a) | 0.68 AU (101 Gm) |
| 10.8 mas | ||
| Eccentricity | (e) | 0 |
| Orbital period | (P) | 136.75 ± 0.25 d (0.37439 y) |
| Time of periastron | (T0) | 2,453,001.7 ± 1.4 JD |
| Physical characteristics | ||
| Minimum mass | (m sin i) | 2.8 MJ |
| Discovery information | ||
| Discovery date | 19 February 2008 | |
| Discoverer(s) | Sato et al.[1] | |
| Discovery method | Radial velocity | |
| Discovery site | Okayama Planet Search Program Japan | |
| Discovery status | Published[1] | |
| Database references | ||
| Extrasolar Planets Encyclopaedia | data | |
| SIMBAD | data | |
| Exoplanet Archive | data | |
| Open Exoplanet Catalogue | data | |
Xi Aquilae b (abbreviated ξ Aquilae b, ξ Aql b), also named Fortitudo, is an extrasolar planet approximately 200 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 Jupiter and a period of 137 days.[1]
Following its discovery the planet was designated Xi Aquilae b. In July 2014 the International Astronomical Union launched a process for giving proper names to certain exoplanets and their host stars.[2] The process involved public nomination and voting for the new names.[3] In December 2015, the IAU announced the winning name was Fortitudo for this planet.[4]
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', an embodiment of fortitude - emotional and mental strength in the face of adversity.[5]
See also
References
- 1 2 3 Sato, Bun'ei; 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. arXiv:0802.2590
. Bibcode:2008PASJ...60..539S. doi:10.1093/pasj/60.3.539. - ↑ NameExoWorlds: An IAU Worldwide Contest to Name Exoplanets and their Host Stars. IAU.org. 9 July 2014
- ↑ NameExoWorlds The Process
- ↑ Final Results of NameExoWorlds Public Vote Released, International Astronomical Union, 15 December 2015.
- ↑ NameExoWorlds The Approved Names
External links
- "ksi Aql". Exoplanets. Retrieved 2008-06-25.
Coordinates: 
19h 54m 15s, +08° 27′ 41″