Kappa Coronae Borealis b

Kappa Coronae Borealis b
Exoplanet List of exoplanets
Parent star
Star Kappa Coronae Borealis
Constellation Corona Borealis
Right ascension (α) 15h 51m 13.9315s
Declination (δ) +35° 39′ 26.575″
Apparent magnitude (mV) 4.79
Distance101.51 ly
(31.12 pc)
Spectral type K1IVa
Orbital elements
Semi-major axis(a) 2.68 AU
(401 Gm)
Periastron (q) 2.29 AU
(343 Gm)
Apastron (Q) 3.07 AU
(459 Gm)
Eccentricity (e) 0.146 ± 0.08
Orbital period(P) 1208 ± 14 d
(3.307 y)
Argument of
periastron		 (ω) 34 ± 40°
Time of periastron (T0) 2453128 ± 30 JD
Semi-amplitude (K) 41.3 m/s
Physical characteristics
Minimum mass(m sin i)1.8 MJ
(570 M⊕)
Discovery information
Discovery date Sept 20, 2007
published Nov 28, 2007
Discoverer(s) Johnson et al.
Discovery method radial velocity
Discovery status Published
Database references
Extrasolar Planets
Encyclopaedia		data
SIMBADdata
Exoplanet Archivedata
Open Exoplanet Cataloguedata

Kappa Coronae Borealis b is an extrasolar planet approximately 102 light years away 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.

The planet has mass of 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

    • Johnson; Marcy, Geoffrey W.; Fischer, Debra A.; Wright, Jason T.; Reffert, Sabine; Kregenow, Julia M.; Williams, Peter K. G.; Peek, Kathryn M. G. (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.

    Coordinates: 15h 51m 13.9315s, +35° 39′ 26.575″


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