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HD 187123 b is a typical "hot Jupiter" located approximately 150 light-years away in the constellation of Cygnus, orbiting the star HD 187123. It has a mass about half that of Jupiter and it orbits in a very tight, round orbit around the star every three days.[2][3]

HD 187123 b
Discovery
Discovered byButler, Marcy,
Vogt, Apps et al.
Discovery siteCalifornia, United States
Discovery date9 September 1998
Detection method
radial velocity
Orbital characteristics
Semi-major axis
0.04213±0.00034 AU
Eccentricity0.0093±0.0046[1]
Orbital period (sidereal)
3.0965828±0.0000043[1] d
Time of periastron
2454342.87±0.30[1]
Argument of periastron
360±200[1]
Semi-amplitude68.91±0.36[1]
StarHD 187123

    The star has also been monitored for possible transits by the planet, but none was found.

    The presence of water has been detected in the atmosphere of HD 187123 b with high confidence.[4]


    See also



    References


    1. Feng, Y. Katherina; et al. (2015). "The California Planet Survey IV: A Planet Orbiting the Giant Star HD 145934 and Updates to Seven Systems with Long-period Planets". The Astrophysical Journal. 800 (1). 22. arXiv:1501.00633. Bibcode:2015ApJ...800...22F. doi:10.1088/0004-637X/800/1/22.
    2. Butler, R. Paul; et al. (1998). "A Planet with a 3.1 Day Period around a Solar Twin". Publications of the Astronomical Society of the Pacific. 110 (754): 1389–1393. Bibcode:1998PASP..110.1389B. doi:10.1086/316287.
    3. Wright, J. T.; et al. (2009). "Ten New and Updated Multi-planet Systems, and a Survey of Exoplanetary Systems". The Astrophysical Journal. 693 (2): 1084–1099. arXiv:0812.1582. Bibcode:2009ApJ...693.1084W. doi:10.1088/0004-637X/693/2/1084.
    4. Buzard, Cam; et al. (July 2020). "Simulating the Multi-epoch Direct Detection Technique to Isolate the Thermal Emission of the Non-transiting Hot Jupiter HD187123b". The Astronomical Journal. 160 (1): 13. arXiv:2005.03020. Bibcode:2020AJ....160....1B. doi:10.3847/1538-3881/ab8f9c. 1.




    На других языках


    [de] HD 187123 b

    HD 187123 b ist ein Exoplanet, der den gelben Zwerg HD 187123 alle 3,0965828 Tage umkreist. Auf Grund seiner hohen Masse wird angenommen, dass es sich um einen Gasplaneten handelt.
    - [en] HD 187123 b



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