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HD 192263 b is a gas giant planet with a mass about three quarters that of Jupiter mass. It orbits the star in a circular orbit completing one revolution in 24 days or so. It was discovered in 2000 by the Geneva Extrasolar Planet Search team.[1] The planet was independently detected by the California and Carnegie Planet Search team.[2][3]

HD 192263 b
Discovery
Discovered bySantos, Mayor,
Naef et al.[1]
Discovery siteLa Silla Observatory
Discovery dateSeptember 28th, 1999
Detection method
Doppler Spectroscopy
(CORALIE)
Orbital characteristics
Semi-major axis
0.15 AU (22,000,000 km)
Eccentricity0
Orbital period (sidereal)
24.348 ± 0.005 d
Time of periastron
2,451,979.28 ± 0.08
Argument of periastron
0
Semi-amplitude51.9 ± 2.6
StarHD 192263

    The planet HD 192263 b is named Beirut. The name was selected in the NameExoWorlds campaign by Lebanon, during the 100th anniversary of the IAU. Beirut is the capital and largest city of Lebanon.[4][5]

    In 2002 the existence of the planet was questioned by G. Henry: The star was observed to have photometric brightness variations that have same period and velocities as the planet. The signal could come from those variations instead of the planet orbiting the star or suggests that rotational modulation of the visibility of stellar surface activity is the source of the observed radial velocity variations.[6] Finally, in 2003 the planet was confirmed; the planet is thought to be causing fluctuations in the system's magnetic field, causing visible activity.[7]

    Preliminary astrometry in 2001 set its inclination at 179.5°;[8] but it is now thought to be inclined according to the star's ecliptic, edge-on to Earth.


    References


    Notes
    1. Santos, N. C.; et al. (2000). "The CORALIE survey for Southern extra-solar planets III. A giant planet in orbit around HD 192263". Astronomy and Astrophysics. 356: 599–602. Bibcode:2000A&A...356..599S. Archived from the original on 2011-09-28. Retrieved 2008-11-04.
    2. "Astronomers discover six new planets orbiting nearby stars" (Press release). Kamuela, Hawaii: W. M. Keck Observatory. November 1, 1999. Retrieved December 19, 2017.
    3. Vogt, Steven S.; et al. (2000). "Six New Planets from the Keck Precision Velocity Survey". The Astrophysical Journal. 536 (2): 902–914. arXiv:astro-ph/9911506. Bibcode:2000ApJ...536..902V. doi:10.1086/308981.
    4. "Approved names". NameExoworlds. Retrieved 2020-01-02.
    5. "International Astronomical Union | IAU". www.iau.org. Retrieved 2020-01-02.
    6. See, "No Planet at All: Star Fools Astronomers, Who See Spots". Space.com article. Archived from the original on 2002-10-04.
    7. Santos, N. C.; et al. (2003). "The CORALIE survey for southern extra-solar planets XI. The return of the giant planet orbiting HD 192263". Astronomy and Astrophysics. 406 (1): 373–381. arXiv:astro-ph/0305434. Bibcode:2003A&A...406..373S. doi:10.1051/0004-6361:20030776.
    8. Han; Black, David C.; Gatewood, George (2001). "Preliminary Astrometric Masses for Proposed Extrasolar Planetary Companions". The Astrophysical Journal Letters. 548 (1): L57–L60. Bibcode:2001ApJ...548L..57H. doi:10.1086/318927. Archived from the original on 2015-11-06. Retrieved 2009-03-09.
    Bibliography



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    На других языках

    [de] HD 192263 b

    HD 192263 b ist ein Exoplanet, der den Hauptreihenstern HD 192263 alle 24,3556 Tage umkreist. Auf Grund seiner hohen Masse wird angenommen, dass es sich um einen Gasplaneten handelt.
    - [en] HD 192263 b

    [es] HD 192263 b

    HD 192263 b, es un planeta extrasolar, gigante gaseoso con una masa que podría ser de al menos tres cuartas partes de la del planeta Júpiter. Orbita la estrella en una órbita circular completando una revolución cada 24 días aproximadamente


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