14 Herculis c

14 Herculis c
Discovery
Discovered by	Goździewski et al.
Discovery site	United States
Discovery date	17 November 2005; 2 July 2021 (confirmed)
Detection method	Doppler spectroscopy
Orbital characteristics
Semi-major axis	16.4+9.3; −4.3AU
Eccentricity	0.45+0.17; −0.15
Orbital period (sidereal)	68+64; −25 years
Time of periastron	2,449,100.0
Semi-amplitude	24.5 ± 1.4
Star	14 Herculis
Physical characteristics
Mass	5.8+1.4; −1.0MJ

14 Herculis c or 14 Her c is an extrasolar planet approximately 58.5 light-years away in the constellation of Hercules. The planet was found orbiting the star 14 Herculis, with a mass that would likely make the planet a gas giant roughly the same size as Jupiter but much more massive. It was discovered on November 17, 2005 and published on November 2, 2006,^[3] although its existence was not confirmed until 2021.^[1] According to a recent analysis, the existence of a second planet in the 14 Herculis system is "clearly" supported by the evidence, but the planet's parameters are not precisely known. It may be in a 4:1 resonance with the inner planet 14 Herculis b.^[2]

References[]

^ ^a ^b ^c ^d ^e ^f The California Legacy Survey I. A Catalog of 177 Planets from Precision Radial Velocity Monitoring of 719 Nearby Stars over Three Decades, 2021, arXiv:2105.11583
^ ^a ^b ^c Wittenmyer, R. A.; Endl, M.; Cochran, W. D. (2007). "Long-Period Objects in the Extrasolar Planetary Systems 47 Ursae Majoris and 14 Herculis". The Astrophysical Journal. 654 (1): 625–632. arXiv:astro-ph/0609117. Bibcode:2007ApJ...654..625W. doi:10.1086/509110.
^ Goździewski, K.; Konacki, M.; Maciejewski, A. J. (2006). "Orbital Configurations and Dynamical Stability of Multiplanet Systems around Sun-like Stars HD 202206, 14 Herculis, HD 37124, and HD 108874" (PDF). The Astrophysical Journal. 645 (1): 688–703. arXiv:astro-ph/0511463. Bibcode:2006ApJ...645..688G. doi:10.1086/504030.

External links[]

Jean Schneider (2011). "Notes for Planet 14 Her c". Extrasolar Planets Encyclopaedia. Retrieved 30 September 2011.
"14 Herculis". SolStation. Archived from the original on 19 July 2008. Retrieved 2008-06-25.

Coordinates: 16^h 10^m 23.59^s, +43° 49′ 18.2″

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[Rosenthal2021-1] ^ ^a ^b ^c ^d ^e ^f The California Legacy Survey I. A Catalog of 177 Planets from Precision Radial Velocity Monitoring of 719 Nearby Stars over Three Decades, 2021, arXiv:2105.11583

[wittenmyer-2] Wittenmyer, R. A.; Endl, M.; Cochran, W. D. (2007). "Long-Period Objects in the Extrasolar Planetary Systems 47 Ursae Majoris and 14 Herculis". The Astrophysical Journal. 654 (1): 625–632. arXiv:astro-ph/0609117. Bibcode:2007ApJ...654..625W. doi:10.1086/509110.

[3] Goździewski, K.; Konacki, M.; Maciejewski, A. J. (2006). "Orbital Configurations and Dynamical Stability of Multiplanet Systems around Sun-like Stars HD 202206, 14 Herculis, HD 37124, and HD 108874" (PDF). The Astrophysical Journal. 645 (1): 688–703. arXiv:astro-ph/0511463. Bibcode:2006ApJ...645..688G. doi:10.1086/504030.

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