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Kappa Coronae Borealis b is an extrasolar planet approximately 98 light-years away[3] in the constellation of Corona Borealis. This planet was discovered by Johnson et al., who used the radial velocity method to detect wobbling of the star caused by a planet move around by its tug of gravity. It was first discovered in September 2007 and was published in November.[1]

Kappa Coronae Borealis b
Discovery[1]
Discovered byJohnson et al.
Discovery siteLick Observatory
Discovery date2007
Detection method
Doppler spectroscopy
Orbital characteristics[2]
Semi-major axis
2.65±0.13 AU
Eccentricity0.167±0.032
Orbital period (sidereal)
1285±14 d
Time of perihelion
2456830±51 JD
Argument of perihelion
194±14 º
Semi-amplitude26.18±0.86 m/s
StarKappa Coronae Borealis
Physical characteristics[2]
Mass≥1.811±0.057 MJ

    The planet is 1.8 Jupiter masses, or 570 Earth masses, although only the minimum mass is known since the inclination is not known. It orbits at a distance of 2.7 astronomical units, or 400 gigameters, and takes 1,208 days, or 3.307 years, to orbit around Kappa Coronae Borealis.


    See also



    References


    1. Johnson, John Asher; et al. (2008). "Retired A Stars and Their Companions. II. Jovian Planets Orbiting κ CrB and HD 167042". The Astrophysical Journal. 675 (1): 784–789. arXiv:0711.4367. Bibcode:2008ApJ...675..784J. doi:10.1086/526453.
    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.



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