| Discovery | |
|---|---|
| Discovered by | Marcy et al. |
| Discovery site | Keck Observatory |
| Discovery date | 25 January 2005 |
| Detection method | radial velocity |
| Orbital characteristics | |
| Semi-major axis | 3.773+0.036 −0.035 AU |
| Eccentricity | 0.04+0.026 −0.024 |
| Orbital period (sidereal) | 2606+12 −13 d 7.136+0.034 −0.035 yr |
| Average orbital speed | 15.9 |
| Inclination | 76.6°+9.3° −12.0° or 103.4°+12.0° −9.3° |
| Longitude of ascending node | 42°+17° −18° |
| Time of periastron | 2456669+341 −339 |
| Argument of periastron | 186°+48° −47° |
| Semi-amplitude | 26.6±0.93 |
| Star | HD 117207 |
| Physical characteristics | |
| Mass | 2.106+0.16 −0.089 MJ |
HD 117207 b is an exoplanet orbiting at 3.77 astronomical units around HD 117207, taking about 7.14 years to complete its orbit. Its orbit has a low to moderate eccentricity. This planet was announced in January 2005 by Marcy at the Keck Observatory. HD 117207 b has a minimum mass of 1.88 Jupiter masses, and in 2023 its inclination and true mass were determined via astrometry.
References
- ^ Marcy, Geoffrey W.; et al. (2005). "Five New Extrasolar Planets". The Astrophysical Journal. 619 (1): 570–584. Bibcode:2005ApJ...619..570M. CiteSeerX 10.1.1.516.6667. doi:10.1086/426384. S2CID 5803173.
- ^ Xiao, Guang-Yao; Liu, Yu-Juan; et al. (May 2023). "The Masses of a Sample of Radial-Velocity Exoplanets with Astrometric Measurements". Research in Astronomy and Astrophysics. 23 (5): 055022. arXiv:2303.12409. Bibcode:2023RAA....23e5022X. doi:10.1088/1674-4527/accb7e.
- 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. hdl:2299/1103. S2CID 119067572. Archived from the original on 2019-12-07. Retrieved 2012-09-20.
External links
- "HD 117207". Exoplanets. Archived from the original on 2009-11-25. Retrieved 2008-10-31.
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