14 Herculis c

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]

14 Herculis c
Discovery
Discovered byGoździewski et al.
Discovery site United States
Discovery date17 November 2005
2 July 2021 (confirmed)
Doppler spectroscopy
Orbital characteristics
16.4+9.3
−4.3AU[1]
Eccentricity0.45+0.17
−0.15[1]
68+64
−25[1] years[1]
2,449,100.0[2]
Semi-amplitude24.5 ± 1.4[2]
Star14 Herculis
Physical characteristics
Mass5.8+1.4
−1.0MJ[1]

    References
    1. 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
    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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