Astronomy:14 Herculis c
| 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[4] | |
| 27.4+16 −7.9 astronomical unit|AU[3] | |
| Eccentricity | 0.65±0.06 |
| Orbital period | 52160±1028 d 142.8±2.8 yr |
| Inclination | 82°±14° |
| Longitude of ascending node | 224°±9° |
| astron|astron|helion}} | 2,451,779±33 JD |
| 0°±1° | |
| Semi-amplitude | 50.8±0.4 m/s |
| Star | 14 Herculis |
| Physical characteristics[4] | |
| Mass | 7.1+1.0 −0.6 Jupiter mass |
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,[3] and refined by further astrometric studies in 2022 and 2023.[6][4] The inclination is 82°, corresponding to a true mass of 7.1 |♃|J}}}}}}.[4]
Direct imaging of 14 Herculis c with the James Webb Space Telescope is planned.[7]
References
- ↑ 1.0 1.1 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". The Astrophysical Journal 645 (1): 688–703. doi:10.1086/504030. Bibcode: 2006ApJ...645..688G. http://authors.library.caltech.edu/5547/1/GOZapj06.pdf.
- ↑ 2.0 2.1 Rosenthal, Lee J.; Fulton, Benjamin J.; Hirsch, Lea A.; Isaacson, Howard T.; Howard, Andrew W.; Dedrick, Cayla M.; Sherstyuk, Ilya A.; Blunt, Sarah C. et al. (2021), "The California Legacy Survey. I. A Catalog of 178 Planets from Precision Radial Velocity Monitoring of 719 Nearby Stars over Three Decades", The Astrophysical Journal Supplement Series 255 (1): 8, doi:10.3847/1538-4365/abe23c, Bibcode: 2021ApJS..255....8R
- ↑ 3.0 3.1 Bardalez Gagliuffi, Daniella C. et al. (1 December 2021). "14 Her: A Likely Case of Planet–Planet Scattering". The Astrophysical Journal Letters 922 (2): L43. doi:10.3847/2041-8213/ac382c. Bibcode: 2021ApJ...922L..43B.
- ↑ 4.0 4.1 4.2 4.3 Benedict, G. F. et al. (May 2023). "The 14 Her Planetary System: Companion Masses and Architecture from Radial Velocities and Astrometry". The Astronomical Journal 166 (1): 27. doi:10.3847/1538-3881/acd93a. Bibcode: 2023AJ....166...27B.
- ↑ 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. doi:10.1086/509110. Bibcode: 2007ApJ...654..625W.
- ↑ Feng, Fabo et al. (August 2022). "3D Selection of 167 Substellar Companions to Nearby Stars". The Astrophysical Journal Supplement Series 262 (21): 21. doi:10.3847/1538-4365/ac7e57. Bibcode: 2022ApJS..262...21F.
- ↑ "Solving a Solar Neighborhood Crime Scene by Imaging 14 Her c". STScI. https://www.stsci.edu/jwst/science-execution/program-information.html?id=3337.
External links
- Jean Schneider (2011). "Notes for Planet 14 Her c". Extrasolar Planets Encyclopaedia. https://exoplanet.eu/catalog/14_her_c--309/.
- "14 Herculis". SolStation. Archived from the original on 19 July 2008. https://web.archive.org/web/20080719164703/http://www.solstation.com/stars2/14her.htm. Retrieved 2008-06-25.
Coordinates: 
16h 10m 23.59s, +43° 49′ 18.2″
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