Gliese 667 Cb

Gliese 667 Cb

Exoplanet		List of exoplanets
Artist's impression of Gliese 667 Cb if rocky with the Gliese 667 AB binary in the background
Parent star
Star		Gliese 667C
Constellation		Scorpius
Right ascension	(α)	17^h 18^m 57.16483^s
Declination	(δ)	−34° 59′ 23.1416″
Apparent magnitude	(mV)	11.03
Mass	(m)	0.31 M☉
Radius	(r)	0.42 R☉
Temperature	(T)	3700 K
Metallicity	[Fe/H]	−0.59±0.10
Age		2–10 Gyr
Physical characteristics
Mass	(m)	5.94–~12 M⊕
Stellar flux	(F⊙)	5.5 ⊕
Temperature	(T)	473
Orbital elements
Semi-major axis	(a)	0.050432±0.000001 AU
Eccentricity	(e)	0.112
Orbital period	(P)	7.2006 d
Inclination	(i)	>30°
Semi-amplitude	(K)	3.8 m/s
Discovery information
Discovery date		2009
Discoverer(s)
Discovery method		Radial velocity (European Southern Observatory)
Discovery status		Confirmed

Gliese 667 Cb is an exoplanet orbiting the star Gliese 667 C, a member of the Gliese 667 triple-star system. It is the most massive planet discovered in the system and is likely a super-Earth or a mini-Neptune. Orbital-stability analysis indicates that it cannot be more than twice its minimum mass. It orbits too close to the star to be in the habitable zone.^[1] Eccentricity analysis indicates that Gliese 667 Cb is not a rocky planet.^[2]

References

1. Anglada-Escudé, Guillem; et al. (2013-06-07). "A dynamically-packed planetary system around GJ 667C with three super-Earths in its habitable zone" (PDF). Astronomy & Astrophysics. arXiv:1306.6074. Bibcode:2013A&A...556A.126A. doi:10.1051/0004-6361/201321331. Retrieved 2013-06-25.
2. The high multiplicity systems Gliese 667C and KOI 3158 Second Kepler Science Conference, 5th November 2013