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.[1] HD 117207 b has a minimum mass of 1.88 Jupiter masses,[3] and in 2023 its inclination and true mass were determined via astrometry.[2]

HD 117207 b
Discovery[1]
Discovered byMarcy et al.
Discovery siteKeck Observatory
Discovery date25 January 2005
radial velocity
Orbital characteristics[2]
3.773+0.036
−0.035
 AU
Eccentricity0.04+0.026
−0.024
2606+12
−13
 d

7.136+0.034
−0.035
 yr
15.9
Inclination76.6°+9.3°
−12.0°
or 103.4°+12.0°
−9.3°
42°+17°
−18°
2456669+341
−339
186°+48°
−47°
Semi-amplitude26.6±0.93
StarHD 117207
Physical characteristics[2]
Mass2.106+0.16
−0.089
 MJ

References

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  1. ^ a b 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.
  2. ^ a b c 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.
  3. ^ 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.
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