HD 117207 b
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.
| Discovery | |
|---|---|
| Discovered by | Marcy et al. |
| Discovery site | Keck Observatory |
| Discovery date | 25 January 2005 |
| radial velocity | |
| Orbital characteristics | |
| 3.773+0.036 −0.035 AU | |
| Eccentricity | 0.04+0.026 −0.024 |
| 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° |
| 42°+17° −18° | |
| 2456669+341 −339 | |
| 186°+48° −47° | |
| Semi-amplitude | 26.6±0.93 |
| Star | HD 117207 |
| Physical characteristics | |
| Mass | 2.106+0.16 −0.089 MJ |
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