en HD 102117 b

HD 102117 b / Leklsullun
Discovery
Discovered by	Tinney et al.
Discovery site	Anglo-Australian Observatory, Australia
Discovery date	September 16, 2004
Detection method	Radial Velocity
Orbital characteristics
Apastron	0.1717 AU (25,690,000 km)
Periastron	0.1347 AU (20,150,000 km)
Semi-major axis	0.1532 ± 0.0088 AU (22,920,000 ± 1,320,000 km)
Eccentricity	0.106 ± 0.07
Orbital period (sidereal)	20.8133 ± 0.0064 d
Average orbital speed	80.35
Time of periastron	10942.9 ± 3 2.400.000
Argument of periastron	283 ± 3
Semi-amplitude	11.8 ± 0.77
Star	HD 102117
Physical characteristics
Mass	>0.172 ± 0.018 MJ; (>54.7 ME)

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

^ ^a ^b 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. S2CID 12515735.
^ "Approved names". NameExoWorlds. Retrieved 2020-01-02.
^ 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. S2CID 119067572.
^ 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 2012-03-04. Retrieved 2008-11-04.

This extrasolar-planet-related article is a stub. You can help Wikipedia by expanding it.

[Tinney2005-1] 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. S2CID 12515735.

[2] "Approved names". NameExoWorlds. Retrieved 2020-01-02.

[Butler2006-3] 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. S2CID 119067572.

[Lovis2005-4] 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.

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