Astronomy:HD 102117 b
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Short description: Extrasolar planet
| Discovery | |
|---|---|
| Discovered by | Tinney et al.[1] |
| Discovery site | Anglo-Australian Observatory, Australia |
| Discovery date | September 16, 2004 |
| Radial Velocity | |
| Orbital characteristics | |
| astron|astron|helion}} | 0.1717 AU (25,690,000 km) |
| astron|astron|helion}} | 0.1347 AU (20,150,000 km) |
| 0.1532 ± 0.0088 AU (22,920,000 ± 1,320,000 km) | |
| Eccentricity | 0.106 ± 0.07 |
| Orbital period | 20.8133 ± 0.0064 d |
| Average Orbital speed | 80.35 |
| astron|astron|helion}} | 10942.9 ± 3 2.400.000 |
| 283 ± 3 | |
| Semi-amplitude | 11.8 ± 0.77 |
| Star | HD 102117 |
| Physical characteristics | |
| Mass | >0.172 ± 0.018 |♃|J}}}}}} (>54.7 M⊕) |
HD 102117 b, formally named Leklsullun,[2] is a planet that orbits the star HD 102117. The planet is a small gas giant a fifth the size of Jupiter. It orbits very close to its star, but not in a "torch orbit" like the famous 51 Pegasi b. It was one of the smallest extrasolar planets discovered as of 2006.[3]
In 2004, the Anglo-Australian Planet Search announced a planet orbiting the star HD 102117.[1] A short time later the HARPS team also announced the presence of a planet around this same star HD 102117. Both groups detected this planet using the radial velocity method.[4]
References
- ↑ 1.0 1.1 Tinney, C. G. et al. (2005). "Three Low-Mass Planets from the Anglo-Australian Planet Search". The Astrophysical Journal 623 (2): 1171–1179. doi:10.1086/428661. Bibcode: 2005ApJ...623.1171T.
- ↑ "Approved names" (in en). http://www.nameexoworlds.iau.org/final-results.
- ↑ Butler, R. P. et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal 646 (1): 505–522. doi:10.1086/504701. Bibcode: 2006ApJ...646..505B.
- ↑ Lovis, C. et al. (2005). "The HARPS search for southern extra-solar planets III. Three Saturn-mass planets around HD 93083, HD 101930 and HD 102117". Astronomy and Astrophysics 437 (3): 1121–1126. doi:10.1051/0004-6361:20052864. Bibcode: 2005A&A...437.1121L.
External links
Coordinates: 
11h 44m 50.4616s, −58° 42′ 13.354″
de:HD 102117 b
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