HD 16175 b / Abol
Discovery[1]
Discovered byPeek et al.
Discovery siteLick Observatory
radial velocity
Orbital characteristics[2]
2.13+0.075
−0.08 AU
Eccentricity0.675±0.026
981+11
−14 d
2.686+0.031
−0.039 yr
Inclination59°+20°
−19° or 121°+19°
−20°
78°+27°
−28°
2455800.4+4.9
−5.1
216.8°+4.8°
−4.7°
Semi-amplitude51.75±2.5[3]
StarHD 16175
Physical characteristics[2]
Mass5.9+1.8
−1.0 MJ

    HD 16175 b is an exoplanet located approximately 195.7 light-years away in the constellation of Andromeda, orbiting the star HD 16175. This planet has a minimum mass 4.8 times that of Jupiter; the true mass was initially unknown since the inclination of the orbit was unknown. This planet orbits at about 2.2 astronomical units, taking 2.73 years to revolve around the star. The orbit of the planet is highly elliptical with an eccentricity of 0.64.[3] In 2023, the inclination and true mass of HD 16175 b were determined via astrometry.[2]

    The planet HD 16175 b is named Abol. The name was selected in the NameExoWorlds campaign by Ethiopia, during the 100th anniversary of the IAU. Abol is the first of three rounds of coffee in the Ethiopian traditional coffee ceremony.[4][5]

    Discovery

    The discovery was made using radial velocity measurements taken between November 2004 and March 2009 with the Coudé Auxiliary and C. Donald Shane telescopes at Lick Observatory.[1]

    See also

    References

    1. 1 2 Peek, Kathryn M. G.; et al. (2009). "Old, rich, and eccentric: two jovian planets orbiting evolved metal-rich stars". Publications of the Astronomical Society of the Pacific. 121 (880): 613–620. arXiv:0904.2786. Bibcode:2009PASP..121..613P. doi:10.1086/599862. S2CID 12042779.
    2. 1 2 3 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. 1 2 Díaz, Rodrigo F.; Rey, Javiera; Demangeon, Olivier D. S.; Hébrard, Guillaume; Boisse, Isabelle; Arnold, Luc; Astudillo-Defru, Nicola; Beuzit, Jean-Luc; Bonfils, Xavier; Borgniet, Simon; Bouchy, François; Bourrier, Vincent; Courcol, Bastien; Deleuil, Magali; Delfosse, Xavier; Ehrenreich, David; Forveille, Thierry; Lagrange, Anne-Marie; Mayor, Michel; Moutou, Claire; Pepe, Francesco; Queloz, Didier; Santerne, Alexandre; Santos, Nuno C.; Sahlmann, Johannes; Ségransan, Damien; Udry, Stéphane; Wilson, Paul A. (2016). "The SOPHIE search for northern extrasolar planets XI. Three new companions and an orbit update: Giant planets in the habitable zone". Astronomy & Astrophysics. 591: A146. arXiv:1604.07610. Bibcode:2016A&A...591A.146D. doi:10.1051/0004-6361/201628331. S2CID 3282336.
    4. ↑ "Approved names". NameExoworlds. Retrieved 2020-01-02.
    5. ↑ "International Astronomical Union | IAU". www.iau.org. Retrieved 2020-01-02.
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