HD 102117 b
HD 102117 b 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 is one of the smallest extrasolar planets discovered so far.[2]
| Discovery | |
|---|---|
| Discovered by | Tinney et al.[1] |
| Discovery site | Anglo-Australian Observatory, Australia |
| Discovery date | September 16, 2004 |
| Radial Velocity | |
| Orbital characteristics | |
| Apastron | 0.1717 AU (25,690,000 km) |
| Periastron | 0.1347 AU (20,150,000 km) |
| 0.1532 ± 0.0088 AU (22,920,000 ± 1,320,000 km) | |
| Eccentricity | 0.106 ± 0.07 |
| 20.8133 ± 0.0064 d | |
Average orbital speed | 80.35 |
| 10942.9 ± 3 2.400.000 | |
| 283 ± 3 | |
| Semi-amplitude | 11.8 ± 0.77 |
| Star | HD 102117 |
| Physical characteristics | |
| Mass | >0.172 ± 0.018 MJ (>54.7 M⊕) |
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.[3]
References
- Tinney, C. G.; et al. (2005). "Three Low-Mass Planets from the Anglo-Australian Planet Search". The Astrophysical Journal. 623 (2): 1171–1179. Bibcode:2005ApJ...623.1171T. CiteSeerX 10.1.1.491.2941. doi:10.1086/428661.
- Butler, R. P.; et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal. 646 (1): 505–522. arXiv:astro-ph/0607493. Bibcode:2006ApJ...646..505B. doi:10.1086/504701.
- 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. arXiv:astro-ph/0503660. Bibcode:2005A&A...437.1121L. doi:10.1051/0004-6361:20052864.
External links
- "HD 102117". Exoplanets. Archived from the original on 2013-08-30. Retrieved 2008-11-04.
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