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HD 192699 b is an exoplanet located approximately 214 light-years away[3] in the constellation of Aquila, orbiting the star HD 192699. This planet was discovered in April 2007, massing at least 2.5 times the mass of Jupiter (MJ). Despite its orbital distance more than that of Earth, the orbital period is less than a year, because the parent star is more massive than the Sun.[1]

HD 192699 b
Discovery[1]
Discovered byJohnson et al.
Discovery siteLick Observatory and Keck Observatory
Discovery date2007
Detection method
Doppler spectroscopy
Orbital characteristics[2]
Semi-major axis
1.063±0.049 AU
Eccentricity0.082±0.041
Orbital period (sidereal)
340.94±0.92 d
Time of perihelion
2454079±36 JD
Argument of perihelion
87±37 º
Semi-amplitude49.3±2.1 m/s
StarHD 192699
Physical characteristics[2]
Mass≥2.096±0.093 MJ

    The planet HD 192699 b is named Khomsa. The name was selected in the NameExoWorlds campaign by Tunisia, during the 100th anniversary of the IAU. Khomsa is a palm-shaped amulet that is popular in Tunisia.[4][5]

    The existence of this planet around a 1.68 solar mass (M☉) star provides evidence for the existence of planetary systems around A-type main sequence stars.


    See also



    References


    1. Johnson, John Asher; et al. (2007). "Retired A Stars and Their Companions: Exoplanets Orbiting Three Intermediate-Mass Subgiants". The Astrophysical Journal. 665 (1): 785–793. arXiv:0704.2455. Bibcode:2007ApJ...665..785J. doi:10.1086/519677.
    2. Luhn, Jacob K.; et al. (2019). "Retired A Stars and Their Companions. VIII. 15 New Planetary Signals around Subgiants and Transit Parameters for California Planet Search Planets with Subgiant Hosts". The Astronomical Journal. 157 (4). 149. arXiv:1811.03043. Bibcode:2019AJ....157..149L. doi:10.3847/1538-3881/aaf5d0.
    3. Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
    4. "Approved names". NameExoworlds. Retrieved 2020-01-02.
    5. "International Astronomical Union | IAU". www.iau.org. Retrieved 2020-01-02.



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    [de] HD 192699 b

    HD 192699 b ist ein Exoplanet, der den gelben Unterriesen HD 192699 umkreist. Auf Grund seiner hohen Masse wird angenommen, dass es sich um einen Gasplaneten handelt.
    - [en] HD 192699 b

    [es] HD 192699 b

    HD 192699 b es un planeta extrasolar que se encuentra a 220 años luz en la constelación del Águila, orbitando la estrella HD 192699.Su masa es de 2,5 veces la masa de Júpiter. A pesar de su distancia orbital mayor que la de la Tierra, el periodo orbital es menor de un año, debido a que la estrella del sistema es más masiva que el Sol.


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