| Discovery[1][2] | |
|---|---|
| Discovered by | Goździewski et al.; Rosenthal et al. |
| Discovery site | United States |
| Discovery date | 17 November 2005 (candidate) 2 July 2021 (confirmed) |
| Doppler spectroscopy | |
| Designations | |
| HD 145675 c | |
| Orbital characteristics[3] | |
| 27.4+16 −7.9 AU[4] | |
| Eccentricity | 0.65±0.06 |
| 52160±1028 d 142.8±2.8 yr | |
| Inclination | 82°±14° |
| 224°±9° | |
| 2,451,779±33 JD | |
| 0°±1° | |
| Semi-amplitude | 50.8±0.4 m/s |
| Star | 14 Herculis |
| Physical characteristics[3] | |
| Mass | 7.1+1.0 −0.6 MJ |
14 Herculis c or 14 Her c is an exoplanet approximately 58.4 light-years away in the constellation of Hercules. The planet was found orbiting the star 14 Herculis, with a mass that would 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,[1] although its existence was not confirmed until 2021.[2]
According to a 2007 analysis, the existence of a second planet in the 14 Herculis system was "clearly" supported by the evidence, but the planet's parameters were not precisely known. It may be in a 4:1 resonance with the inner planet 14 Herculis b.[5]
The inclination and true mass of 14 Herculis c were measured in 2021, using data from Gaia,[4] and refined by further astrometric studies in 2022 and 2023.[6][3] The inclination is 82°, corresponding to a true mass of 7.1 MJ.[3]
Direct imaging of 14 Herculis c with the James Webb Space Telescope is planned.[7]
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